Relevant bibliographies by topics / Concrete slab

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Concrete slab'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 June 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Concrete slab.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Concrete slab"

1

Bakardzhiev, S. "Study of the behavior of a experimental reinforced concrete slab at different stages of loading from the production of the reinforced concrete slab over it." IOP Conference Series: Materials Science and Engineering 1276, no. 1 (February 1, 2023): 012024. http://dx.doi.org/10.1088/1757-899x/1276/1/012024.

Full text
Abstract:
Abstract This report examines the behavior of a reinforced concrete slab, part of an experimental reinforced concrete structure, under loads derived from the casting of the formwork system of the subsequent plate and from the laid concrete mix in the slab above it. The deflections in the individual stages were measured with the help of dial gauges. The full strength and deformation characteristics of the concretes used in the construction were researched. The behavior at all stages of loading of the slab was studied, including each phase of formwork of the slab above it and the laying of the concrete in the formwork itself. Conclusions have been made about the behavior of the slabs during production using the method for Early striking of reinforced concrete slabs.
APA, Harvard, Vancouver, ISO, and other styles
2

Mohammed, Bilal Kamal, and Bayan Salim Al-Numan. "Effectiveness of Limestone Powder as a Partial Replacement of Cement on the Punching Shear Behavior of Normal- and High-Strength Concrete Flat Slabs." Sustainability 16, no. 5 (March 5, 2024): 2151. http://dx.doi.org/10.3390/su16052151.

Full text
Abstract:
The objective of this study is to investigate the performance of normal- and high-strength concretes including limestone powder (LP) through their mechanical properties. Moreover, sustainable flat plates made of these concretes were investigated through their punching strength. For this purpose, two different types of concrete (normal- and high-strength) with various limestone replacement ratios of 0%, 5%, 15%, and 20% by weight were designed. The fresh and hardened characteristics of the mixtures were investigated at various ages. By this means, the experimental behavior of reinforced concrete (RC) flat plate slabs made with limestone powder subjected to punching shear failure was studied. Slump value increased up to a 5% replacement of LP; after that, there was a tendency for the slump value to decrease as the replacement of limestone in normal-strength LP concrete increased. However, slump values for high-strength LP concrete increased as the LP replacement amount increased. There was a steady decrease in the compressive strength and splitting tensile strength values with the increase in LP content in normal concrete. However, in the high-strength LP concrete, with more than 10% of replacement LP, a decrease in the compressive strength values and splitting tensile strength values occurred. Compared to the control slab specimen without LP, in normal strength, the slab specimens with LP exhibit a larger ultimate shear load for slab specimens containing 5% and 10% of LP. The maximum increment for RC slabs containing 10% limestone powder was 3.8%. However, in high-strength concrete, the slab specimens with LP remained at the same ultimate shear load as control slabs, up to 10% of LP. high-strength concrete slabs with 5–20% LP showed an overall increase of (17.2%) in punching strength over the corresponding LP normal-strength concrete slabs. The corresponding increase for control slabs was 18.8%. It can be concluded that introducing LP improves the slab punching strength in a similar way that is found in non-sustainable slabs when using either normal- or high-strength concrete.
APA, Harvard, Vancouver, ISO, and other styles
3

Wang, Xiao Wei, Wen Ling Tian, Zhi Yuan Huang, Ming Jie Zhou, and Xiao Yan Zhao. "Analysis on Punching Shear Behavior of the Raft Slab Reinforced with Steel Fibers." Key Engineering Materials 400-402 (October 2008): 335–40. http://dx.doi.org/10.4028/www.scientific.net/kem.400-402.335.

Full text
Abstract:
The thickness of the raft slab is determined by punching shear. The raft slab is commonly thick, which causes concrete volume is large. Mass concrete can bring disadvantage to the foundation. In order to increase the bearing capacity and reduce the thickness, it is suggested that the raft slab to be reinforced by steel fibers. There are five groups of specimens in this paper. S1 is the common reinforced concrete slab. S2 and S3 are concrete slabs reinforced by steel fibers broadcasted layer by layer when casting specimen. S4 and S5 are concrete slabs reinforced by steel fibers mixed homogeneously when making concrete. The punching shear tests of these slabs were done. The test results indicate that the punching shear capacity of the slab reinforced with steel fibers is higher than that of concrete slab, the stiffness and crack resistance of the steel fibers reinforced concrete slab are better than those of the common concrete slab and the punching shear of the slabs with different construction methods of steel fibers is similar. It analyses the punching shear behavior of the slab reinforced with steel fibers and suggests the ultimate bearing formula. The calculative values are coincided with the measured values well.
APA, Harvard, Vancouver, ISO, and other styles
4

Galishnikova, Vera V., Alireza Heidari, Paschal C. Chiadighikaobi, Adegoke Adedapo Muritala, and Dafe Aniekan Emiri. "Ductility and flexure of lightweight expanded clay basalt fiber reinforced concrete slab." Structural Mechanics of Engineering Constructions and Buildings 17, no. 1 (December 15, 2021): 74–81. http://dx.doi.org/10.22363/1815-5235-2021-17-1-74-81.

Full text
Abstract:
Relevance. The load on a reinforced concrete slab with high strength lightweight aggregate concrete leads to increased brittleness and contributes to large deflection or flexure of slabs. The addition of fibers to the concrete mix can improve its mechanical properties including flexure, deformation, toughness, ductility, and cracks. The aims of this work are to investigate the flexure and ductility of lightweight expanded clay concrete slabs reinforced with basalt fiber polymers, and to check the effects of basalt fiber mesh on the ductility and flexure. Methods. The ductility and flexural/deflection tests were done on nine engineered cementitious composite (expanded clay concrete) slabs with dimensions length 1500 mm, width 500 mm, thickness 65 mm. These nine slabs are divided in three reinforcement methods types: three lightweight expanded clay concrete slab reinforced with basalt rebars 10 mm (first slab type); three lightweight expanded clay concrete slab reinforced with basalt rebars 10 mm plus dispersed chopped basalt fiber plus basalt fiber polymer (mesh) of cells 2525 mm (second slab type); three lightweight expanded clay concrete slab reinforced with basalt rebars 10 mm plus dispersed basalt fiber of length 20 mm, diameter 15 m (third slab type). The results obtained showed physical deflection of the three types of slab with cracks. The maximum flexural load for first slab type is 16.2 KN with 8,075 mm deflection, second slab type is 24.7 KN with 17,26 mm deflection and third slab type 3 is 32 KN with 15,29 mm deflection. The ductility of the concrete slab improved with the addition of dispersed chopped basalt fiber and basalt mesh.
APA, Harvard, Vancouver, ISO, and other styles
5

Wang, Lei, Shihua Zhou, Yan Shi, Yajun Huang, Feng Zhao, Tingting Huo, and Shengwen Tang. "The Influence of Fly Ash Dosages on the Permeability, Pore Structure and Fractal Features of Face Slab Concrete." Fractal and Fractional 6, no. 9 (August 28, 2022): 476. http://dx.doi.org/10.3390/fractalfract6090476.

Full text
Abstract:
Concrete-face slabs are the primary anti-permeability structures of the concrete-face rockfill dam (CFRD), and the resistance of face slab concrete to permeability is the key factor affecting the operation and safety of CFRDs. Herein, the influences of five fly ash dosages (namely 10%, 20%, 30%, 40% and 50%) on the permeability property of face slab concretes were investigated. Moreover, the difference in the permeability caused by the fly ash dosage variations is revealed in terms of the pore structure and fractal theory. The results illustrate that: (1) The inclusion of 10–50% fly ash lowered the compressive strength of face slab concretes before 28 days of hydration, whereas it contributed to the 180-day strength increment. (2) The incorporation of 10–50% fly ash raised the average water-seepage height (Dm) and the relative permeability coefficient (Kr) of the face slab concrete by about 14–81% and 30–226% at 28 days, respectively. At 180 days, the addition of fly ash improved the 180-day impermeability by less than 30%. (3) The permeability of face slab concretes is closely correlated with their pore structures and Ds. (4) The optimal fly ash dosage in terms of the long-term impermeability and pore refinement of face slab concretes is around 30%. Nevertheless, face slab concretes containing a high dosage of fly ash must be cured for a relatively long period before they can withstand high water pressure.
APA, Harvard, Vancouver, ISO, and other styles
6

Wang, Lei, and Hong Ya Zhang. "Summary of Study on Composite Concrete Slabs." Applied Mechanics and Materials 351-352 (August 2013): 695–98. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.695.

Full text
Abstract:
Reinforced Concrete Slab is one of the important types of composite structure, About the concrete laminated slab of the research and the engineering application are summarized, Point out that the characteristics of Composite Concrete Slabs, the application and development of the laminated slab of recent advances at home and abroad, and look into the future of the Composite Concrete Slabs research.
APA, Harvard, Vancouver, ISO, and other styles
7

Muhamad Khairussaleh, N. A., R. Omar, S. Mat Aris, M. F. Mohd Nor, M. A. Mohd Saidi, and N. M. A. Nik Mohd Mahari. "Flexural Behaviour of the Two-Way Spanning Reinforced Concrete Slab Using Spherical Plastic Bubble Balls." IOP Conference Series: Earth and Environmental Science 1140, no. 1 (February 1, 2023): 012016. http://dx.doi.org/10.1088/1755-1315/1140/1/012016.

Full text
Abstract:
Abstract The use of conventional reinforced concrete in the construction industry increases each year, especially in developing countries. However, the concrete content, particularly cement production contributed to the greenhouse gas emission subsequently increase to climate change. Thus, the reinforced concrete slab containing high-density polyethene (HDPE) hollow spherical plastic bubble balls also known as bubble deck slabs were introduced for sustainable construction. This type of slab forms a slab that has less concrete volume compared to the normal solid reinforced concrete slab. Although this unique system can facilitate up to a 50% longer span compared to the conventional reinforced concrete solid slab, yet, it can cause the performance of the slab structure such as flexural and shear capacity may be affected due to the thirty to forty per cent of fewer concrete volumes. Hence, this paper studies the comparison of the performance of the two-way supported slabs; reinforced bubble deck slab and normal solid reinforced concrete slab after being subjected to the area loading. The square slabs are 1200mm by 1200mm in width and length with a thickness of 235mm. The investigations of the experiments included flexural strength, bending stiffness and load-deflection behaviour due to the impact of the area loading. Also, the crack propagation and crack pattern which differs also was shown for each type of slab system, especially in shear strength.
APA, Harvard, Vancouver, ISO, and other styles
8

Abdul Hamid, Mohd Samsudin, Muhammad Zaim Zulkiple, Hafizah Muhammad Azlan, and Noor Syafeekha Mohamad Sakdun. "Structural Performance of Reinforced Concrete Double Layer Bamboo Bubble Slab Under Uniformly Distributed Load." ESTEEM Academic Journal 19, September (September 30, 2023): 11–22. http://dx.doi.org/10.24191/esteem.v19iseptember.21179.

Full text
Abstract:
The architectural use areas in the structure are formed by reinforced concrete (RC) slabs, which transport vertical loads to the beams, columns, load-bearing walls, and shear walls. The slab is an important structural member of reinforced concrete building structures and concrete-intensive parts of structural members. . The slab deflects significantly when the load acting on the slab or the clear span between columns is large. As a result, the slab's thickness increases to accommodate the load received. Since this slab's self-weight increases as the thickness increases, the slabs get heavier and causes the slab unable to withstand the load and to produce cracks on the surface. At the turn of the twentieth and twenty-first centuries, the creation of the bubble deck slab became an innovation to replace conventional slab. This study used bamboo as the bubble material in reinforced concrete bubble slab. This study examined and assessed the mechanical properties and structural behaviour of bamboo as a bubble in supported reinforced concrete double-layer bamboo bubble slab under a uniformly distributed load. In this research, 500 mm x 1250 mm x 175 mm supported reinforced concrete slabs C25 (1 sample) and C30 (1 sample) with double layer (DL) bamboo bubble slabs were constructed. Both samples were compared with the control sample (CS) for each slab type. It was found that the maximum displacement occurred at the centre of the slab, with 6.45 mm for DL25 and 6.89 mm for DL30. According to stress-strain analysis, the double layer bamboo slab produced a lower stress value than the control sample. Since the values were smaller than 2, DL25 and DL30 slab performed better for the ductility factor than CS25 and CS30. As a result, the displacement, ductility and section capacity were improved by employing bamboo as a bubble material in a reinforced concrete slab.
APA, Harvard, Vancouver, ISO, and other styles
9

Zhang, Jing Shu, Huan Huan Nie, Yuan Long Yang, and Yuan Yao. "Research and Application of Pre-Stressed Concrete Composite Slabs." Applied Mechanics and Materials 166-169 (May 2012): 131–39. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.131.

Full text
Abstract:
The pre-stressed concrete composite slab, which combines the advantages of cast-in-place slabs and precast slabs, has promising development prospects. In the paper, according to structural integrity, bond performance, sound insulation, thermal preservation and construction techniques, four categories composite slab, such as the composite slab with flat bottom panel (including the composite slab with bar truss reinforced precast concrete bottom panel), the concrete composite slab with precast ribbed panel, the composite slab with hollow bottom panel and the composite slab with sandwich bottom panel are studied. The composite slab with flat bottom panel has poor structural integrity, and its bond performance and crack resistance of edge joint details need to be improved; the composite slab with bar truss reinforced precast concrete bottom panel has enough bond force, but its storage and transportation are inconvenient; the concrete composite slab with precast ribbed panel has good structural integrity and convenient construction procedure; the composite slab with hollow bottom panel and the composite slab with sandwich bottom panel have functions of sound insulation and thermal preservation, however they are inadequacy to resist bending moment and have complex construction procedure. The concrete composite slab with precast ribbed panel is provided with good mechanical behavior, economy and practicability, and is worth further researching and promoting.
APA, Harvard, Vancouver, ISO, and other styles
10

Mao, Ming Jie, and Qiu Ning Yang. "Study on Prestressed Concrete Slabs with Lightweight Aggregate." Advanced Materials Research 450-451 (January 2012): 338–42. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.338.

Full text
Abstract:
A lightweight aggregate with low permeability was employed in the concrete slab; and the strength of the slab is mainly discussed. The purpose of present study is to evaluate experimentally the punching shear strength of lightweight concrete slab, and to propose the punching shear strength equation for the slab with lightweight aggregate concrete. The applicability of the proposed equation to the both reinforced concrete and pre-stressed concrete slabs with lightweight aggregate concrete.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Concrete slab"

1

Trygstad, Steinar. "Structural Behaviour of Post Tensioned Concrete Structures : Flat Slab. Slabs on Ground." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-114.

Full text
Abstract:

In this investigation strength and structural behaviour of prestressed concrete is studied with one full scale test of one flat slab, 16000 mm x 19000 mm, and three slabs on ground each 4000 mm x 4000 mm with thickness 150 mm. The flat slab was constructed and tested in Aalesund. This slab has nine circular columns as support, each with diameter 450 mm. Thickness of this test slab was 230 mm and there were two spans in each direction, 2 x 9000 mm in x-direction and 2 x 7500 mm in y-direction from centre to centre column. The slab was reinforced with twenty tendons in the middle column strip in y-direction and eight tendons in both outer column strips. In x-direction tendons were distributed with 340 mm distance. There were also ordinary reinforcement bars in the slab. Strain gauges were welded to this reinforcement, which together with the deflection measurements gives a good indication of deformation and strains in the structure.

At a live load of 6.5 kN/m2 shear failure around the central column occurred: The shear capacity calculated after NS 3473 and EuroCode2 was passed with 58 and 69 %, respectively. Time dependent and non-linear FE analyses were performed with the program system DIANA. Although calculated and measured results partly agree well, the test show that this type of structure is complicated to analyse by non-linear FEM.

Prestressed slabs on ground have no tradition in Norway. In this test one reinforced and two prestressed slabs on ground were tested and compared to give a basis for a better solution for slabs on ground. This test was done in the laboratory at Norwegian University of Science and Technology in Trondheim. The first slab is reinforced with 8 mm bars in both directions distributed at a distance of 150 mm in top and bottom. Slab two and three are prestressed with 100 mm2 tendons located in the middle of slab thickness, and distributed at a distance of 630 mm in slab two and 930 mm in slab three. Strain gauges were glued to the reinforcement in slab one and at top and bottom surface of all three slabs. In slab two and three there were four load cells on the tendons.

Each slab were loaded with three different load cases, in the centre of slab, at the edge and finally in the corner. This test shows that stiffness of sub-base is one of the most important parameters when calculating slabs on ground. Deflection and crack load level depends of this parameter. Since the finish of slabs on ground is important, it can be more interesting to find the load level when cracks start, than deflection for the slab. It is shown in this test that crack load level was higher in prestressed slabs than in reinforced slab. There was no crack in the top surface with load in the centre, but strain gauges in the bottom surface indicate that crack starts at a load of 28 kN in the reinforced slab, and 45 kN in the prestressed slabs. Load at the edge give a crack load of 30 kN in reinforced slab, 45 kN and 60 kN in prestressed slabs. The last load case gives crack load of 30 kN in reinforced slab, 107 kN and 75 kN in prestressed slabs. As for the flat slab, FE analyses were performed for all of the three slabs on ground, and analyses shows that a good understanding of parameters like stiffness of sub-base and tension softening model, is needed for correct result of the analyses.

APA, Harvard, Vancouver, ISO, and other styles
2

Shao, Xiao-yun. "Punching shear strength of reinforced concrete slab." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/10727.

Full text
Abstract:
This thesis presents the results of punching shear tests performed on a 2 x 2 bay continuous slab with/and without supplementary supports. On the basis of these tests, the code method of calculating the ultimate strength of interior, edge and corner column connections of flat slab were investigated. The thickness of the specimen was 140 mm and the spans length were 2743 mm. The ACI 318-89, BS 8110-85 and CEB-FIP 90 Codes were critically reviewed by comparing with the experiment results and results from the literature. It was found that in general the Code predictions are reasonable but for corner column connections the ACI Code over-estimates the ultimate shear capacity of the slab and BS 8110-85 requirements for edge and corner column connections are simplistic. The experimental results show that the supplementary supports can increase the ultimate punching shear capacity when the supports are properly located.
APA, Harvard, Vancouver, ISO, and other styles
3

Menez, Martin Herve. "Efficiency of a fabric formed concrete slab." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104241.

Full text
Abstract:
Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2016.
Cataloged from PDF version of thesis. Page 123 blank.
Includes bibliographical references (pages 121-122).
The built environment is responsible for approximately 50% of the carbon emissions on the planet. Therefore, it is of major importance to reduce the carbon footprint of our structures to better preserve our environment for future generations. Furthermore, studies demonstrate that flooring systems can be responsible for 70% of material consumption in high rise buildings, and about the same proportion of embodied carbon energy. Based on these considerations, this thesis suggests a new form of concrete slab and quantifies its efficiency in terms of material, carbon energy and cost savings compared to a traditional reinforced concrete flooring system. The proposed form of concrete slab is constructed using fabric formwork. It provides the flexibility and ease of construction needed to build such a low-volume structural shape. After establishing that this slab can be about 50% lighter than a traditional reinforced concrete slab, the thesis models and quantifies the savings in other parts of the structure and shows that the embodied carbon footprint of the entire building can be reduced by approximately 50%. Keywords: Concrete slab - Compression only - Fabric-formworks - Carbon energy
by Martin Herve Menez.
M. Eng.
APA, Harvard, Vancouver, ISO, and other styles
4

Bengtsson, Pär, and Johan Wallin. "Analysis of a Prefabricated Concrete Skew Angle Slab Bridge." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-81146.

Full text
Abstract:
Prefabricated concrete elements are widely used in the construction industry today. With advantages such as time savings, increased safety at the construction site and minimized material usage, prefab becomes a major challenger to the traditional on-site casting construction method. However, constructing a bridge in concrete still presents challenges when using prefab as a construction method. Hence, more research in the area is needed. This master thesis has been studying the behavior of a prefabricated skew angle slab and the connection between the slab and wall elements of a bridge. The study was conducted using a finite element software, where three 3D-models of skew angle slabs were created. The three models had different skew angles (0, 15 and 30 degrees) and crossed the same path. The models could represent both the slab and the slab-wall connection. The finite element analysis showed that slabs with angles up to 15 degrees could be designed as a straight bridge. However, when the skew angle increases to 30 degrees, the behavior of the slab and connection changes significantly. Furthermore, the results show that a stress concentration occurs in the obtuse corner and that the stress increases when the skew angle increases. Moreover, there is a slight uplift in the acute corner when the skew angle increases to 30 degrees.
APA, Harvard, Vancouver, ISO, and other styles
5

Russell, Justin. "Progressive collapse of reinforced concrete flat slab structures." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/28991/.

Full text
Abstract:
In 1968 a relatively small gas exposition on the 18th floor of the Ronan Point tower building resulted in the partial collapse of the structure. This event highlighted that progress collapse may occur to structures under an accidental loading event. Other events, including the bombing of the Murrah federal building in 1993 in Oklahoma, have resulted in the common design requirement that a structure be capable of surviving the removal of a load bearing element. This approach, often referred to as the sudden column loss scenario, effectively ignores the cause of the damage and focuses on the structure’s response afterwards. The refinement of the analysis varies, with options to include the nonlinear and dynamic behaviours associated with extreme events, or to use simplified linear and static models with factors included to account for the full behaviour. Previous research into progressive collapse has highlighted that providing ductility in the connections, and avoiding brittle failures, is important in ensuring the structure maintains integrity after a column loss event. However, the majority of this work has been focused on the behaviour of steel and Reinforced Concrete (RC) frame structures. As flat slab construction is a popular method for many structures, due to the flexibility it offers for layouts and its low storey heights, it is an important to consider flat slab behaviour in more detail. Furthermore, slab elements behave differently to frame structures due to the Alternative Load Paths (ALPs) that can develop after a column loss via two-dimensional bending mechanisms. Additionally, punching shear failure is a known issue due to the thin section depths. This work addresses the issue of the response of RC flat slab structures after a sudden column loss. As previous case studies have demonstrated that brittle failures may lead to progressive collapse of such structures, a complete understanding of the response is required. The nonlinear behaviour of a slab structure, due to both material and geometric factors, is investigated to determine the additional capacity available beyond the usual design limits. Additionally, the dynamic factors involved, primarily due to inertial effects, are also considered. To achieve this, experimental and numerical studies were conducted. A series of 1/3 scale models of slab substructures were constructed to replicate column loss events. Two types of tests were conducted, a static push down test with a support removed and a sudden dynamic column removal case. Displacements, strains and support reactions were recorded throughout, along with cracking patterns. For the dynamic tests a high speed camera was used to obtain the deflection response in the short time period after removal and to observe the formation of cracks. Comparisons between the two cases allowed determination of the dynamic effects on the response of the system. The experimental programme was then replicated using a Finite Element (FE) model. The results taken from the experimental case were used to validate the material and modelling assumptions made during the numerical simulations. This validated model was finally used to investigate a wider range of variables and assess the response of typical structural arrangements, with particular focus on the nonlinear and dynamic factors involved after a sudden column loss. The experimental and numeral investigations demonstrated that after the loss of a column, flat slab structures can maintain integrity due to a change in the load paths away from the removal location. Although in some cases a large amount of flexural damage to the concrete and reinforcement occurred, such effects did not lead to complete failure. However, during the experimental programme some punching shear failures occurred, usually at the corner column locations. From the numerical analysis, shear forces of over twice the fully supported condition occurred as a result of removing a column, which may exceed the designed capacity. Comparisons between a static and dynamic analysis provides information into a suitable Dynamic Amplification Factor (DAF) for use with simplified modelling approaches. Based on the range of structures considered, the maximum increase in deflections as a result of a sudden removal was 1.62 times the static case, this is less than the commonly used factor of 2.0. Additionally, this factor reduces as the nonlinearity increases due to further damage, with a smallest DAF calculated at 1.39. This factor can be reduced further if the column is not removed instantaneously. Finally, the material strengthening effect, due to high strain rates, was considered with the conclusion that as such effects only make a limited increase in the capacity of the slab and may be conservatively ignored. In conclusion, RC flat slab structures are capable of resisting progressive collapse after the loss of a column. This is primarily due to their ability to develop ALPs. However, while flexural damage is usually fairly minimal, progressive punching shear failure is a critical design condition as it may result in a complete collapse. Furthermore, the inertial effects involved after a sudden removal can increase the damage sustained, although current design methods may be over conservative.
APA, Harvard, Vancouver, ISO, and other styles
6

Hobbs, Michael. "Effects of Slab-Column Interaction in Steel Moment Resisting Frames with Steel-Concrete Composite Floor Slabs." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2014. http://hdl.handle.net/10092/9946.

Full text
Abstract:
Composite construction is widely used worldwide and is undergoing significant technological development. New Zealand is part of this development, with new beam options incorporating multiple unstiffened web openings and new deck profiles supported by extensive testing. However, one area where relatively little research has been undertaken is in the interaction of the composite slab with the seismic resisting system under lateral loading. In order to provide important new information in this area, a series of full scale beam-column-joint-slab subassemblies were tested at the University of Canterbury. Specimens tested had moment end plate connections and different combinations of deck tray direction, and isolation of the slab from the column. An additional test uses a sliding-hinge type connection to assess the effect of the floor slab in this type of low damage connection. In these tests the lateral capacity of the seismic resisting system was increased by up to 25% due to the presence of the slab in contact with the column. The increase in capacity is 10% greater for decking running in longitudinal direction than in the transverse direction as a result of a more substantial full depth slab bearing on the column. The floor slabs of the subassemblies with the slab cast against the column all showed a higher level of damage than for those with the isolated column and the post ultimate strength degradation of the subassemblies without special detailing was significant. The subassembly with a section of full depth slab surrounding the column also exhibited a higher capacity but with an improved post ultimate strength degradation. All moment end plate subassemblies sustained drifts of up to 5% without significant strength loss. The sliding hinge joint showed little signs of damage under testing to 5% drift. Some inelastic deformation of the connection and beams was noted above 5% drift. Results from both testing and numerical modelling have shown that the current methods used to design these systems are conservative but within 15% of the values observed. Further testing and modelling will be necessary before any meaningful changes can be made to the way in which these systems are designed. Recommendations have been made regarding the placements of shear studs in plastic hinge zones and the provision of slab isolation around beam-column connections.
APA, Harvard, Vancouver, ISO, and other styles
7

Kabir, Ahsanul. "Nonlinear analysis of reinforced concrete structural slabs." Thesis, University of Strathclyde, 1986. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21467.

Full text
Abstract:
Nonlinear response of a structure to progressive loading may originate from two different sources viz, geometric nonlinearity and material nonlinear behaviour. For a rationally proportioned concrete structure, the material nonlinear responses are believed to contribute the major part of its total nonlinear behaviour. Geometric nonlinearities, become significant only when the structure is relatively slender. It is the material nonlinearities of reinforced concrete structures that are of interest in this investigation. Two plate bending finite elements have been generalised to include coupling of inplane actions with the bending effects. This was achieved through layering concept. One of these elements had been employed by some previous researchers. But the present formulation is different from theirs in that a numerical integration scheme is introduced to evaluate the stiffnesses and internal equivalent forces. A number of schemes for solving the nonlinear equations have been included in the present formulation. Suitability and effectiveness of these schemes in tracing the material nonlinear responses of concrete slabs have been examined. The numerical material model behaviour is based on the experimental observation reported by various authors. Readily available material characteristic properties are used in the description of the model. The overall response of reinforced concrete slabs is found to be significantly influenced by the cracking and post cracking treatment of concrete. Some form of tension stiffening scheme seems necessary to represent the structural response realistically. A number of conventional tension stiffening schemes have been incorporated, including a simple alternative formulation. The effect of different tension stiffening schemes and some other numerical parameters on the numerical solution of concrete structures have been investigated. Laboratory tests were carried out on a number of square and rectangular model slabs. The supporting arrangement and the applied loading systems were the main variables. These experimental records were later compared with the numerical predictions. Some other test results from literature have been included also.
APA, Harvard, Vancouver, ISO, and other styles
8

Deaton, James B. "A Finite Element Approach to Reinforced Concrete Slab Design." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7188.

Full text
Abstract:
The objective of this study was the development of a procedure in GT STRUDL to design reinforced concrete flat plate systems based on the results of finite element analysis. The current state-of-practice of reinforced concrete flat plate design was reviewed, including the ACI direct design and equivalent frame techniques, the yield line method, and the strip design method. The principles of these methods along with a critical evaluation of their applicability and limitations were presented as motivation for a finite element based design procedure. Additionally, the current state-of-the-art of flat plate design based on finite element results was presented, along with various flat plate modeling techniques. Design methodologies studied included the Wood and Armer approach, based on element stress resultants, and the resultant force approach, based on element forces. A flat plate design procedure based on the element force approach was embodied in the DESIGN SLAB command, which was implemented in GT STRUDL. The DESIGN SLAB command provides the user the ability to design a slab section by specifying a cut definition and several optional design parameters. The procedure determines all nodes and elements along the cut, computes the resultant moment design envelope acting on the cross-section, and designs the slab for flexure in accordance with provisions of ACI 318-02. Design examples presented include single-panel flat plate systems with various support conditions as well as multi-panel systems with regular and irregular column spacing. These examples allowed for critical comparison with results from experimental studies and currently applied design methods in order to determine the applicability of the implemented procedure. The DESIGN SLAB command was shown to produce design moments in agreement with experimental data as well as conventional design techniques for regular configurations. The examples additionally showed that when cuts were not oriented orthogonally to the directions of principle bending, resulting designs based on element forces could significantly under-reinforce the cross-section due to significant torsional effects.
APA, Harvard, Vancouver, ISO, and other styles
9

Lodi, Sarosh Hashmat. "Reinforced concrete slab elements under bending and twisting moments." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/1192.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Gao, Zhicheng. "Corrosion Damage of Reinforcement Embedded in Reinforced Concrete Slab." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1478174479305336.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Concrete slab"

1

Ajdukiewicz, Andrzej. Reinforced-concrete slab-column structures. Amsterdam: Elsevier, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ajdukiewicz, Andrzej. Reinforced-concrete slab-column structures. Amsterdam: Elsevier, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

ACI Committee 302. Guide for concrete floor and slab construction. Detroit, Mich: American Concrete Institute, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Soltesz, Steven M. Injected polyurethane slab jacking: Interim report. Salem, OR: Oregon Dept. of Transportation, Research Group, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Soltesz, Steven M. Injected polyurethane slab jacking: Final report. Salem, OR: Oregon Dept. of Transportation, Research Group, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Elastic analysis of slab structures. București, România: Editura Academiei, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Association, Portland Cement, ed. Concrete slab surface defects: Causes, prevention, repair. Skokie, Ill: Portland Cement Association, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Kwieciński, Marek. Collapse load design of slab-beam systems. Chichester, West Sussex, England: Ellis Horwood, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Gross, John L. Analysis of shoring loads and slab capacity for multistory concrete construction. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bahnfleth, William P. Three-dimensional modelling of heat transfer from slab floors. Champaign, Ill: US Army Corps of Engineers, Construction Engineering Research Laboratory, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Concrete slab"

1

Abdelrahman, Amr. "Slab Strengthening." In Strengthening of Concrete Structures, 115–41. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8076-3_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Hulse, R., and W. H. Mosley. "Slab Design." In Reinforced Concrete Design by Computer, 104–26. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-18930-4_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Zayat, K. A. "Section Through Concrete Slab." In Structural Wood Detailing in CAD Format, 200. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2104-0_28.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hansemann, Georg, Christoph Holzinger, Robert Schmid, Joshua Paul Tapley, Stefan Peters, and Andreas Trummer. "Lightweight Reinforced Concrete Slab." In Towards Radical Regeneration, 456–66. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13249-0_36.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Freyermuth, Clifford L. "Post-Tensioned Slab Systems." In Handbook of Concrete Engineering, 321–38. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4757-0857-8_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Blaauwendraad, Johan. "Diaphragm Floor Slab." In Stringer-Panel Models in Structural Concrete, 75–79. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76678-2_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Jia, Yueqiao, and Jeffrey Choong Luin Chiang. "Finite Element Analysis of Punching Shear of Reinforced Concrete Mushroom Slab-Column Connections Using ABAQUS." In Advances in Frontier Research on Engineering Structures, 83–91. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8657-4_8.

Full text
Abstract:
AbstractCapital is one of the common measures to strengthen the slab-column connections. It can make the joint's load capacity increase. However, when the connection is subjected to the unbalanced bending moment, the reduction effect of the capital on the bending moment is to be studied. Nonlinear finite element analysis is performed on reinforced concrete slabs with column capital for various moment-to-shear (M/V) ratios. The effect of capital radius on the punching shear resistance of slab-column connections is investigated. The 3D finite element modeling is performed using the concrete damage plasticity model and concrete constitutive equations. The concrete damage plasticity model parameters are calibrated by the experiment results of specimens. Increasing the radius of capital can improve the bearing capacity of nodes and reduce the moment transfer effect obviously.
APA, Harvard, Vancouver, ISO, and other styles
8

DING, Yining, and Xiliang NING. "Girder–Beam–Slab System." In Reinforced Concrete: Basic Theory and Standards, 403–45. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2920-5_11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Liu, Yuchen. "Study on the Influence of the Arrangement of Thermal Insulation Floor on the Thermal Insulation and Mechanical Properties of Hollow Slab." In Lecture Notes in Civil Engineering, 125–36. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1748-8_10.

Full text
Abstract:
AbstractIn order to study the influence of the arrangement of thermal insulation floor on the thermal insulation and mechanical properties of hollow slab, ABAQUS is used to establish the model of thermal analysis and mechanical behavior of hollow slab. By investigating distribution of temperature, distribution of heat flux, damage and deformation of floor, deformation of mid-span deflection and other characteristics of the floor section, it is concluded that although the transmission of heat can be effectively obstructed by the thermal insulation slab, the heat will be transferred to the interior of the floor through the gap between the thermal insulation slabs. The arrangement of thermal insulation slab is not the main factor which affect the thermal insulation properties of the floor with the same coverage area. Different arrangement of the thermal insulation slab has a certain impact on the mechanical performance of floor. It is recommended to arrange the thermal insulation slab in equal sections to fully improve the contact area between steel bar and concrete, which can effectively provide the bearing capacity of the floor.
APA, Harvard, Vancouver, ISO, and other styles
10

Singh, Surinder. "Prestressed Concrete Beam and Reinforced Concrete Slab System." In Cost Estimation of Structures in Commercial Buildings, 109–36. London: Macmillan Education UK, 1994. http://dx.doi.org/10.1007/978-1-349-13030-6_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Concrete slab"

1

Torrico, Christian, and Orlando Torrico. "Determining the influence of concrete drying shrinkage in the International Roughness Index of newly constructed rigid pavements in Bolivian Altiplano." In 12th International Conference on Concrete Pavements. International Society for Concrete Pavements, 2021. http://dx.doi.org/10.33593/40nfcisr.

Full text
Abstract:
In the last decade, the design and the construction of concrete pavements in Bolivia focused on prevention of fatigue damage of concrete by the design and construction of locally named "semi-short slabs" concrete pavements, a solution with slab size between traditional JPCP and short slab concrete pavements. Although the structural performance of these new pavements is adequate so far, it was observed that the length of the slab, which commonly is between 2.4 to 3.0 m, affects functional performance. Because of the slabs are affected by differential drying shrinkage, they develop permanent curling with wavelengths that have more influence on IRI with respect to other lengths due to the sensitivity of the Quarter-Car model. This article describes the studies conducted to determine the slab curling influence on IRI of concrete pavements built with semi-short slabs in the last years in the Bolivian Altiplano. Longitudinal profile data was collected by means of a laser profilometer in highway sections located in western Bolivia, in regions with high altitudes and arid climate. Based on profile information, mechanistic analyses were done in order to estimate the theoretical deflections along the slabs that correspond to the observed curling. Deflections calculated were then used to estimate a Pseudo Strain Gradient that represent the effects of curling along the evaluated sections. IRI related to slabs curling was calculated and compared to IRI calculated from artificially generated profiles for various slab lengths. Results indicate that slab curling of these pavements has an important influence on IRI of evaluated sections. Recommendations for specifications of new construction projects are presented.
APA, Harvard, Vancouver, ISO, and other styles
2

S, Ashok, Thushara Raju, Bushra M. A, and Ramaswamy K. P. "Numerical Analysis of Alkali Activated Geopolymer Concrete Slab under Impact Load." In 6th International Conference on Modeling and Simulation in Civil Engineering. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.156.15.

Full text
Abstract:
Researchers focuses on their study on sustainable and environmentally friendly building materials like Geopolymer concrete (GPC). There were several studies done in the literature to find the performance of GPC structural members under different loading conditions and checked their performance against Ordinary Portland cement (OPC) concrete. Slabs are the most important structural members and it is very significant to find the behaviour under impact loads and it is not always adequately understood. The purpose of this study is to examine how an alkali-activated slag slab behaves under impact loading and utilizing the ANSYS software, a 3D nonlinear finite element analysis was performed. To validate the numerical model that was utilised, the slab models were first calibrated using existing experimental data and then parametric tests were conducted utilising various reinforcement ratios and their spacings. The results showed that GPC slabs showed better performance and the deformation decreased with increase in reinforcement ratios.
APA, Harvard, Vancouver, ISO, and other styles
3

Meng, Weina, and Kamal Henri Khayat. "Flexural Performance of Ultra-High Performance Concrete Ballastless Track Slabs." In 2016 Joint Rail Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/jrc2016-5814.

Full text
Abstract:
Ballastless track slab offers excellent stability and durability and has been well accepted in high-speed railways worldwide. Rails are typically laid on precast concrete slabs that are subjected to dynamic load transferred from the rails. Cracks can be induced by shrinkage and mechanical loading in concrete, which accelerates the degradation and affects the performance of the track slab. As tens of thousands of miles of ballastless track are constructed, effective and efficient maintenance for the concrete slabs has become an issue. In this paper, ultra-high performance concrete (UHPC) is proposed to fabricate ballastless track slab. UHPC is a superior fiber-reinforced, cementitioius mortar, which has greatly-improved mechanical strengths and durability. A recently-developed UHPC is evaluated in terms of the flowability, durability, shrinkage, and mechanical properties. A functionally-graded slab design is proposed with the consideration of initial material cost. The slab is cast with two layers: a layer of conventional concrete at the bottom, and a layer of UHPC on the top. A three-dimensional finite element model is developed for ballastless track slab whose flexural performance is investigated and compared with that of slab made with conventional concrete. Concrete damage plasticity model is incorporated to consider the post-cracking behavior. The results indicate that the proposed UHPC is promising for fabricating ballastless track slab with superior performance.
APA, Harvard, Vancouver, ISO, and other styles
4

Ahmed, Mesbah U., Hao Yin, and David Brill. "Concrete Pavement Strength And Fatigue Investigations At The Faa National Airport Pavement Test Facility." In 12th International Conference on Concrete Pavements. International Society for Concrete Pavements, 2021. http://dx.doi.org/10.33593/ydq0z1er.

Full text
Abstract:
The Federal Aviation Administration (FAA) is conducting a full-scale rigid pavement test using simulated aircraft gear loads at the National Airport Pavement Test Facility (NAPTF) as part of NAPTF Construction Cycle 8 (CC8). The objective of this test is to determine the cracking strength and fatigue life of concrete slabs designed and built to FAA standards, hence it is designated the Strength/Fatigue (S/F) test. The experiment considered various combinations of concrete flexural strength (650 vs. 900 psi), slab thickness (9 vs. 12 in), and subgrade strength (CBR 3-4 vs. 7-8). Cracking strengths of some slabs were determined by a series of static load tests using the single-wheel module on the National Airport Pavement Test Vehicle (NAPTV). For all the cracked slabs, the load-related stress was 45-75% of the flexural strength obtained from field-cured beams. These lower-than-expected cracking loads are tentatively attributed to the presence of non load-related (built-in) stresses in the slab. Rolling load tests used a single wheel load (SWL) set to 80% of the estimated bottom-up cracking load and no wander, intended to propagate the crack from the bottom of the slab to the surface. Initial observations suggest that the crack initiation stage is controlled more by slab thickness than by concrete strength, but that the reverse is true for crack propagation once the initial bottom-up crack is formed. Initial analysis also suggests that the FAARFIELD rigid failure model underestimates damage accumulation from crack initiation up to the appearance of the full-depth crack on the surface. However, model predictions were conservative on the terminal deterioration phase during which the surface crack extends to full length, regardless of slab thickness and concrete strength.
APA, Harvard, Vancouver, ISO, and other styles
5

Parvini, Mehdi. "Application of Internal Curing in Slab Replacement using Rapid Strength Concrete." In 12th International Conference on Concrete Pavements. International Society for Concrete Pavements, 2021. http://dx.doi.org/10.33593/v04v57ig.

Full text
Abstract:
The California Department of Transportation (Caltrans) uses rapid strength concrete (also known as high early strength concrete) to repair or rehabilitate concrete pavements. Failed concrete slabs are removed and replaced with rapid strength concrete (RSC) that is often volumetrically proportioned in the field. Both Type III Portland cement concrete and specialty cements are used to prepare RSC. The performance of slab replacement strategy using RSC has been questionable based on past experience. A study was conducted to evaluate and compare the performance of RSC made with the two different cement types. Due to relatively short performance data and variability of the influencing performance factors, no definite conclusions were derived from this study. One consideration in potential short service life of slabs constructed with RSC is the limitation of proper concrete curing. Internal Curing (IC) with lightweight aggregate is employed to compensate for the lack of external/surface curing of the concrete. A pilot slab replacement project on route 680 in Bay Area was identified and slabs were placed side by side with and without lightweight aggregate to monitor and compare the performance of the RSC using internal curing (RSC-IC). The steps that are taken to initiate, design and construct this pilot project is discussed in this paper. Caltrans plans to monitor, test and report the expected improvement in the performance of internal Cured rapid strength concrete in the future.
APA, Harvard, Vancouver, ISO, and other styles
6

Sakai, Hideaki. "Design method for renewal from reinforced concrete slab to precast prestressed concrete slab." In Fifth International Conference on Sustainable Construction Materials and Technologies. Coventry University and The University of Wisconsin Milwaukee Centre for By-products Utilization, 2019. http://dx.doi.org/10.18552/2019/idscmt5013.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Burnton, Peter, and Citra Wicaksana. "Kaimai Tunnel track slab assessment." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.0545.

Full text
Abstract:
<p>Kaimai Tunnel is an 8.5km long KiwiRail tunnel on one of the busiest freight rail lines in NZ North Island. The concrete base slab that supports the track slab in the drill and blast section of the tunnel was cast on a fill layer rather than country rock. The fill layer has in places been washed out over time leaving voids under the base slab resulting in local track slab failures. Previous studies by others recommended major interventions or complete replacement of the track slab for the full tunnel length. This was considered impractical by KiwiRail due to the disruption to the network.</p><p>The first phase of the Arup study concluded that the trackslab could be retained subject to manageable remedial actions. A key component of this study was the interpretation that the existing paved concrete track (PaCT) and base slabs are acting as an unreinforced concrete element spanning between the side drains. Understanding the risk associated with this unintended and unusual structural form was critical in the development of the agreed remedial works. Concrete fatigue was one of the important factors investigated.</p>
APA, Harvard, Vancouver, ISO, and other styles
8

Dewi, Sri Murni, Hamzah Hasyim, Lilya Susanti, Riski Pradina Sulkan, and Desy Setyowulan. "Precast concrete flat slab with autoclaved aerated concrete." In PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON CIVIL ENGINEERING EDUCATION (ICCEE 2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0094076.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Santos-Assuncao, Sonia, Mohammed Hussain Shaz, Vega Perez-Gracia, and Boualem Youcef Nassim Benabdeloued. "Moisture Concrete Analysis in a Damaged Concrete Slab." In 2023 12th International Workshop on Advanced Ground Penetrating Radar (IWAGPR). IEEE, 2023. http://dx.doi.org/10.1109/iwagpr57138.2023.10328988.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zhi, Zhang, Liling Cao, Anurag Bura, Chanjuan Zhou, Lisa Davey, and Seyebabak Momenzadeh. "Evaluation of Prestressed Reinforced Concrete Slab Punching Shear Using Finite Element Method." In IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/prague.2022.1404.

Full text
Abstract:
<p>Punching shear is critical for two-way reinforced concrete flat slab. The unbalanced moment at the column-slab joint is transferred via slab moment and shear forces. ACI 318 provides an equation to evaluate the punching shear under the design load, without considering the effect from differential foundation settlement, which may govern he slab design. This paper studies a prestressed reinforced concrete slab under differential settlements using the finite element modeling (FEM) methodology. The methodology to extract data for punching shear check for the FEM is described and correlated with the corresponding code provisions. The study indicates that FE analysis results should be carefully reviewed and processed in order to perform accurate punching shear evaluation. Conclusions are made based on the case study to help engineers understand the punching shear behavior in prestressed and non-prestressed reinforced concrete slabs.</p>
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Concrete slab"

1

Roesler, Jeffery, Roberto Montemayor, John DeSantis, and Prakhar Gupta. Evaluation of Premature Cracking in Urban Concrete Pavement. Illinois Center for Transportation, January 2021. http://dx.doi.org/10.36501/0197-9191/21-001.

Full text
Abstract:
This study investigated the causes for premature, transverse cracking on urban jointed plain concrete pavements in Illinois. A field survey of 67 sections throughout Illinois coupled with ultrasonic evaluation was completed to synthesize the extent of premature cracking on urban JPCP. The visual survey showed some transverse and longitudinal cracks were a result of improper slab geometry (excessive slab length and width). Ultrasonic tests over the contraction joints determined some notched joints had not activated and adjacent transverse cracks were likely formed as a result. Three-dimensional finite-element analyses confirmed that cracking would not develop as a result of normal environmental factors and slab-base frictional restraint. The concrete mixture also did not appear to be a contributing factor to the premature cracks. Finally, the lack of lubrication on dowel bars was determined to potentially be a primary mechanism that could restrain the transverse contraction joints, produce excessive tensile stresses in the slab, and cause premature transverse cracks to develop.
APA, Harvard, Vancouver, ISO, and other styles
2

Mahadevan, Sankaran, Vivek Agarwal, Binh T. Pham, and Neal Kyle. Digital Image Correlation of Concrete Slab at University of Tennessee, Knoxville. Office of Scientific and Technical Information (OSTI), September 2016. http://dx.doi.org/10.2172/1364495.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

J. Bisset. DESIGN OF A CONCRETE SLAB FOR STORAGE OF SNF AND HLW CASKS. Office of Scientific and Technical Information (OSTI), February 2005. http://dx.doi.org/10.2172/841255.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Seok, Seungwook, Faezeh Ravazdezh, Ghadir Haikal, and Julio A. Ramirez. Strength Assessment of Older Continuous Slab and T-Beam Reinforced Concrete Bridges. Purdue University, 2020. http://dx.doi.org/10.5703/1288284316924.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Solanki, Pranshoo, and Haiyan Xie. Field-Curing Methods for Evaluating the Strength of Concrete Test Specimens. Illinois Center for Transportation, October 2023. http://dx.doi.org/10.36501/0197-9191/23-023.

Full text
Abstract:
The American Association of State Highway and Transportation Officials R 100 standard provides instructions for making and curing concrete test specimens in the field. However, further research is needed to compare the strength of the field-cured specimen with the strength of the actual in-place concrete item. The purpose of this combined laboratory and field study was to evaluate field-curing methods of concrete specimens for estimating the early opening strength of an in-place concrete item. The researchers used one Illinois Department of Transportation class PV mix to cast cylinders, beams, and in-place concrete slabs on October 2021 and February 2022 at an Illinois State University concrete experiment site. Concrete cylinders were cured using three methods: ambient air (Method #C1), insulated box/cooler (Method #C2), and power-operated box (Method #C3). Beams were cured using two methods: ambient air (Method #B1) and insulated plywood box (Method #B2). The cast-in-place specimens from each slab and cylinder were tested for compressive strength, and beams were tested for flexural strength after 1, 3, and 7 days of curing. One cylinder and one beam in each curing method along with slabs were embedded with sensors to collect temperature variation with time. Only Methods #C1, #C2, and #B1 were selected for evaluating further in the field, and data were collected from an IDOT District 5 box culvert demonstration project. Laboratory results showed that Method #C2 curing of 150 mm (6 in.) cylinders estimated early (1 to 3 days) compressive strength of an in-place concrete item within an acceptable range. For estimating the 7-day strength of an in-place concrete item, Method #C1 produced acceptable results. Further statistical analysis supported the results observed in the laboratory and field.
APA, Harvard, Vancouver, ISO, and other styles
6

Ravazdezh, Faezeh, Julio A. Ramirez, and Ghadir Haikal. Improved Live Load Distribution Factors for Use in Load Rating of Older Slab and T-Beam Reinforced Concrete Bridges. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317303.

Full text
Abstract:
This report describes a methodology for demand estimate through the improvement of load distribution factors in reinforced concrete flat-slab and T-beam bridges. The proposed distribution factors are supported on three-dimensional (3D) Finite Element (FE) analysis tools. The Conventional Load Rating (CLR) method currently in use by INDOT relies on a two-dimensional (2D) analysis based on beam theory. This approach may overestimate bridge demand as the result of neglecting the presence of parapets and sidewalks present in these bridges. The 3D behavior of a bridge and its response could be better modeled through a 3D computational model by including the participation of all elements. This research aims to investigate the potential effect of railings, parapets, sidewalks, and end-diaphragms on demand evaluation for purposes of rating reinforced concrete flat-slab and T-beam bridges using 3D finite element analysis. The project goal is to improve the current lateral load distribution factor by addressing the limitations resulting from the 2D analysis and ignoring the contribution of non-structural components. Through a parametric study of the slab and T-beam bridges in Indiana, the impact of selected parameters on demand estimates was estimated, and modifications to the current load distribution factors in AASHTO were proposed.
APA, Harvard, Vancouver, ISO, and other styles
7

Behnood, Ali, and Jan Olek. Development of Subgrade Stabilization and Slab Undersealing Solutions for PCC Pavements Restoration and Repairs. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317128.

Full text
Abstract:
The loss of functionality and the development of distress in concrete pavements is often attributable to the poor subbase and subgrade conditions and/or loss of support due to the development of the voids underneath the slab. Subgrade soil stabilization can be used as an effective approach to restore the functionality of the subgrades in patching projects. This research had two main objectives: (1) identifying the best practices for soil stabilization of the existing subgrade during pavement patching operations and (2) identifying and developing new, modified grouting materials for slab stabilization and undersealing. Various stabilization scenarios were tested and showed improved performance of the subgrade layer. The use of geotextile along with aggregate course was found to significantly reduce the settlement. Non-removable flowable fill was also found to significantly reduce the subgrade settlement. Cement-treated aggregate and lean concrete provided the best performance, as they prevented formation of any noticeable settlement in the underlying subgrade.
APA, Harvard, Vancouver, ISO, and other styles
8

Edwards, Lulu, Haley Bell, and Marcus Opperman. Alternatives for large crater repairs using Rapid Set Concrete Mix®. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40969.

Full text
Abstract:
Research was conducted at the U.S. Army Engineer Research and Development Center (ERDC) in Vicksburg, MS, to identify alternative repair methods and materials for large crater repairs using Rapid Set Concrete Mix®. This report presents the technical evaluation of the field performance of full-depth slab replacement methods conducted using Rapid Set Concrete Mix® over varying strength foundations. The performance of each large crater repair was determined by using a load cart representing one-half of the full gear of a C-17 aircraft. Results indicate that using rapid-setting concrete is a viable material for large crater repairs, and the performance is dependent on surface thickness and base strength.
APA, Harvard, Vancouver, ISO, and other styles
9

Sakulneya, Apidej, Connor Anderson, Jesus Castro-Perez, and Jeffery Roesler. Performance and Design of Continuously Reinforced Concrete Pavements. Illinois Center for Transportation, May 2024. http://dx.doi.org/10.36501/0197-9191/24-011.

Full text
Abstract:
This report focuses on the calibration of a design framework for continuously reinforced concrete pavement (CRCP) developed in 2009 by using the most recent performance data acquired from existing CRCP sections in Illinois. Field performance data were used to update the fatigue damage to punchout model coefficients in the design framework. A sensitivity analysis was performed on the updated CRCP design program to determine its sensitivity to traffic levels, shoulder type, and support conditions as well as its magnitude relative to jointed plain concrete pavement design curves. Additionally, the new CRCP design charts were compared to AASHTOWare Pavement ME Design predicted CRCP slab thicknesses for the same inputs. Lastly, AASHTOWare Pavement ME Design was run to predict the performance of CRCP overlays in Illinois and compare the performance data of seven unbonded concrete overlays constructed in Illinois. AASHTOWare Pavement ME Design was then used to generate CRCP overlay thickness design tables for different traffic levels, shoulder types, and support conditions.
APA, Harvard, Vancouver, ISO, and other styles
10

Hayes, John R., and Jr. Investigation of the Use of Viscoelastic Damping Devices to Rehabilitate a Lightly Reinforced Concrete Slab- Column Structure. Fort Belvoir, VA: Defense Technical Information Center, September 1998. http://dx.doi.org/10.21236/ada360496.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Concrete slab' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography