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Статті в журналах з теми "Concrete slab Design"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 31 липня 2025

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1

Athare, Shubham, and Prof A. U. Bhalerao. "Cost Analysis of Solid Slab and Voided Slab - A Review." International Journal for Research in Applied Science and Engineering Technology 11, no. 6 (2023): 2350–52. http://dx.doi.org/10.22214/ijraset.2023.54054.

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Abstract: A novel and inventive structural system for concrete slabs, called plastic voided slabs, has been developed. This system incorporates plastic voids within the reinforced concrete slab, resulting in a lighter self-weight for the structure without compromising its load-bearing capacity compared to a solid slab. This study aims to compare the design process of plastic voided slabs with that of reinforced concrete solid flat slabs. Specifically, the design of typical bays with identical thickness is analyzed to assess the differences between the two systems.

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2

Keintjem, Militia, Riza Suwondo, and Muchamad Agus Triawan. "Optimising Environmental and Economic Performance in Concrete Slab Design: Efficient vs Practical Strategies." IOP Conference Series: Earth and Environmental Science 1488, no. 1 (2025): 012041. https://doi.org/10.1088/1755-1315/1488/1/012041.

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Abstract The construction industry’s impact on global carbon emissions necessitates sustainable design practices. This study examines the structural, environmental, and economic implications of concrete slab design by comparing practical and efficient approaches. This study aims to evaluate the reinforcement requirements, embodied carbon, and cost implications of two-way slab-on-beam structures. Concrete slabs were constructed for the beams arranged in a 3 × 3 bay arrangement, reflecting the typical parameters of an office building. Gravity loads were calculated based on standard guidelines, a

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3

Al-Ansari, Mohammed Salem, and Muhammad Shekaib Afzal. "Structural analysis and design of irregular shaped reinforced concrete slabs using a simplified design method." Journal of Structural Engineering & Applied Mechanics 3, no. 4 (2020): 276–88. http://dx.doi.org/10.31462/jseam.2020.04276288.

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This paper presents a simplified method to analyze and design the irregular reinforced concrete slabs based on structural safety and economy. The triangular, trapezoidal, and curved slab sections are selected in this study to be analyzed and designed using a simplified design method approach (SDM) as these sections are the most common type of irregular slab sections used in the construction industry. Flexural design formulas for triangular and curved slabs are derived based on the theoretical principles of plate and yield line theories and ACI building code of design constraints. Numerical exa

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4

Abdulaziz, I. Almuaybid, Abdulghafour Abdulrazak, and A. Mlybari Ehab. "Cost Optimization of Solid Slabs using the Iteration Method." Indian Journal of Science and Technology 16, no. 2 (2023): 123–32. https://doi.org/10.17485/IJST/v16i2.1905.

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ABSTRACT <strong>Objectives:</strong> The research aims at minimizing construction projects’ costs, including solid slab materials (steel and concrete), by analyzing the slab’s parameters and optimizing the slab design using the iteration method. <strong>Methods:</strong> Research data were given as thirty solid slabs. Excel spreadsheets were made according to the Saudi Building Code specifications to optimize the slab design automatically and determine the minimum amount of concrete and steel. Plugging of the given data was done in an iterated method while assuring

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5

Kigoye, Eriya, and Michael Kyakula. "Load Deflection Relationship of a Solid Slab under the Action of Construction Loads." Advances in Civil Engineering 2022 (March 9, 2022): 1–16. http://dx.doi.org/10.1155/2022/3125920.

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Over the past decades, there has been a tremendous improvement in the concrete placement technology in Uganda. The methods have moved from being manual to the use of concrete pumps. A concrete pump is capable of pumping high volumes of concrete per minute. This implies that for small volume slabs before the setting of concrete, the whole weight of the fresh concrete of the upper slab, formwork, and props is transferred to the lower supporting slab. During construction, slabs are stacked with materials like bricks, blocks, sand, and aggregates. Construction loads such as block loads and loads d

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6

Xu, Xiaoqing, and Yuqing Liu. "Load Capacities of Steel and Concrete Composite Bridge Deck Slab with Haunch." Advances in Civil Engineering 2017 (2017): 1–15. http://dx.doi.org/10.1155/2017/3295303.

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An innovative steel and concrete composite bridge deck slab using bent bars and epoxy as shear connectors was proposed. Four slab specimens with different types of concrete were fabricated and tested to study the load capacities of positive and negative moment regions of the slabs. The cracking and ultimate loads of the specimens were recorded and compared with the results calculated through the reinforced concrete theory and with the design load of the bridge deck slab. It was found that reinforced concrete theory can generally be applied for the proposed slab as well. The effectiveness of th

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7

Mohanasundari, R., and C. Subramanian. "Optimization of Flat Slab Using Genetic Algorithm." Journal of Advances in Civil Engineering and Management 4, no. 3 (2021): 1–15. https://doi.org/10.5281/zenodo.5790665.

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In this study optimization of reinforced concrete flat slab with drop and column head according to the Indian code (IS 456-2000) is presented. The optimum design of reinforced concrete flat slab could reduce its construction cost because it is usually employed in large floor area without any structural framing beams. Flat slabs are highly versatile elements widely used in construction. The objective function is the total cost of the flat slab, which consists of cost of concrete cost of steel and cost of formwork. The structure is designed by using Direct Design Method. Cost of flat slab is opt

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8

Shulyat'ev, Stanislav. "Optimization of foundation solution by full-scale experimental soil-slab interaction." Construction and Architecture 10, no. 3 (2022): 1–5. http://dx.doi.org/10.29039/2308-0191-2022-10-3-1-5.

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Article considers the case of optimizing design solution for foundation of a 10-storey residential building on sandy soils. Optimization was achieved through experimental work with 2*2*0,2 m reinforced concrete slabs and 5000 cm2 stamps. During slabs testing slab settlements, in concrete and reinforcement, as well as contact pressure under slab were measured. During stamps testing displacements of the stamp and surrounding soil were measured at 21 points. As a result of the tests deflection slab mode, slab-soil contact stresses, changes in radius of curvature, relative deformation of concrete

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9

Salami, A., A. Garba, and I. A. Adamu. "Comparative Cost and Design of Solid, Ribbed and Waffle Slab for a Three-storey Shopping Complex Using Prota, Orion and Spreadsheet." Journal of Engineering Research and Reports 25, no. 8 (2023): 157–69. http://dx.doi.org/10.9734/jerr/2023/v25i8969.

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Cost is an important factor in choosing the type of floor or slab used in any construction. When a large space within a building needs to be covered without hindrance and supports, waffle or ribbed slabs are used. For all slab systems, the cost constitutes a significant portion of the overall cost of the structure. Therefore, this research aims to select a preferable slab system with the least construction cost for a shopping mall. Computer-aided design software such as Prota 2018 and Orion 2018 was used for analysis and design, and RCC spreadsheets were used to manually check the slabs. The r

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10

Dinesh, Kumar Suryavanshi, and Saleem Akhtar Dr. "Design Optimization of Reinforced Concrete Slabs Using Various Optimization Techniques." International Journal of Trend in Scientific Research and Development 3, no. 5 (2019): 45–58. https://doi.org/10.5281/zenodo.3589565.

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This paper presents Reinforced Concrete RC slab design optimization technique for finding the best design parameters that satisfy the project requirements both in terms of strength and serviceability criteria while keeping the overall construction cost to a minimum. In this paper four different types of RC slab design named as simply supported slab, one end continuous slab, both end continuous slab and cantilever slab are optimized using three different metaheuristic optimization algorithms named as Genetic Algorithms GA , Particle Swarm Optimization PSO and Gray Wolf Optimization GWO . The sl

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11

Sokolov, B. S., V. A. Titaev, and V. A. Neshchadimov. "On the revision of the “Reinforced concrete slabs for pavements of city roads” interstate standard." Bulletin of Science and Research Center of Construction 39, no. 4 (2023): 132–42. http://dx.doi.org/10.37538/2224-9494-2023-4(39)-132-142.

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Introduction. For 38 years since the introduction of State Standard 21924.X-84, the regulatory framework for the design and manufacturing of reinforced concrete products has been significantly adjusted and supplemented. In this regard, the authors of the present article have developed an updated interstate standard for reinforced concrete slabs of city road pavements, taking into account amendments in the regulatory literature.Aim. To justify State Standard 21924.X-84 updating and present the updated State Standard 21924-2023 to specialists in the design of city roads and production of reinfor

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12

Konoplianyk, Oleksandr, Nikolay Kotov, and Illia Iliev. "Specific Design Features of Prefabricated Fire-Resistant Floor Slabs Made from Lightweight Concrete." Slovak Journal of Civil Engineering 30, no. 1 (2022): 1–7. http://dx.doi.org/10.2478/sjce-2022-0001.

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Abstract Reinforced concrete roof and floor structures have the highest heating temperatures and are exposed to the most difficult conditions during fires that occur in buildings and structures. The standardized fire resistance of hollow-core slabs made of heavy concrete from Portland cement is regulated as REI 45 or REI 60. The aim of the work is to develop a composition of lightweight fire-resistant concrete and architectural engineering for floor slab devices. The composition of lightweight fire-resistant concrete made from expanded clay aggregates and alumina cement was developed as a resu

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13

Unamba, K. U. "Probabilistic Assessment of Sandwiched Concrete Slabs in Deflection." International Journal for Research in Applied Science and Engineering Technology 9, no. 9 (2021): 2052–58. http://dx.doi.org/10.22214/ijraset.2021.38248.

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Abstract: This study presents a probabilistic evaluation of concrete sand-witched hollow core slabs in accordance with the design requirements of BS8110 (1985; 1997) and Eurocode 2 (2008). The First Order Reliability Method (FORM) was used in computing the probability of failure. For the deflection failure, the effect of varying the load ratio and the breadth of slab on the reliability analysis were carried out at the following values of concrete strengths ݂ܿu: 25N/mm2 , 30 N/mm2 , 40 N/mm2 , 50 N/mm2 . The results indicate that deflection characteristics of the slab are directly affected by t

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14

Hanim Sofea Harmiyn Sany, Shahrul Niza Mokhatar, Abang Abadullah Abang Josmani, et al. "Experimental and Theoretical Design of Reinforced Bubble Deck Concrete (RBDC) Slab: A Review." Journal of Advanced Research in Applied Mechanics 117, no. 1 (2024): 35–50. http://dx.doi.org/10.37934/aram.117.1.3550.

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Slabs are vital for supporting loads and forming the foundation for structures' floors and roofs, classified as one-way or two-way based on deflection characteristics. A recent innovation in construction, the Reinforced Bubble Deck Concrete (RBDC) slab, integrates spherical or elliptical hollow bubbles within the slab for reinforcement, reducing concrete usage without compromising structural integrity. This unconventional approach diverges from traditional methods. The manuscript thoroughly reviews existing literature on the design and testing of Reinforced Bubble Deck Concrete slabs, aiming t

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15

Shi, X. M., C. S. Cai, George Voyiadjis, and Zhongjie Zhang. "Design of Ribbed Concrete Approach Slab Based on Interaction with the Embankment." Transportation Research Record: Journal of the Transportation Research Board 1936, no. 1 (2005): 181–91. http://dx.doi.org/10.1177/0361198105193600121.

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To alleviate the “bump” problem at bridge ends, a ribbed concrete approach slab (similar to slab-on-beam bridge decks) was proposed in place of the pile–column-supported approach span or flat slab system. The effect of given embankment settlement on the structural performance of a ribbed concrete approach slab with a span length of 60 ft and a width of 40 ft was investigated. The approach slab was modeled as a ribbed slab with a beam spacing of 32, 16, and 12 ft. A three-dimensional finite element analysis was conducted to model the interaction between the approach slab and the embankment soil

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16

Muhammad Khairussaleh, Nor Ashikin, Ng Kah Hoe, Roslina Omar, and Gerald A. R. Parke. "The Effect of Area Loading and Punching Shear on the Reinforced Concrete Slab Containing Spherical Plastic Bubble Balls." Key Engineering Materials 912 (March 4, 2022): 211–23. http://dx.doi.org/10.4028/p-m89355.

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The reinforced bubble deck slab or BubbleDeck is a unique system that improves the building design and performance of structures. This slab structure is a reinforced concrete structure that contains high-density polyethene (HDPE) hollow spherical plastic bubble balls with less concrete volume compared to a normal reinforced concrete slab. The system can facilitate up to a 50% longer span compared to a conventional reinforced concrete solid slab. But, eliminating the deadweight concrete may affect the actual performance of the slab structure such as its flexural and shear capacity. Thus, this p

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17

Tur, Andrei V. "Large-Size Jointless Concrete Slab-on-Grade with Combined Prestressing." Solid State Phenomena 309 (August 2020): 201–7. http://dx.doi.org/10.4028/www.scientific.net/ssp.309.201.

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In the international and national practice of design, a different type of slab on the various types of grade are becoming increasingly common. For such structural elements, shrinkage and temperature influences in combination with low tensile stress, mainly in early age, leads to the risk of cracking in reinforced concrete structures, and as result, a reduction of its durability. The present article describes some of the possible ways of usage of the post-tensioned flat slabs and the rational design procedures to provide their structural reliability. The theoretical background of the punching r

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18

RODCHENKO, Oleksandr. "COMPUTER TECHNOLOGIES FOR CONCRETE AIRFIELD PAVEMENT DESIGN." Aviation 21, no. 3 (2018): 111–17. http://dx.doi.org/10.3846/16487788.2017.1379439.

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The purpose of the research is to develop formulas, expressions and a computer program for concrete airfield pavement design under the impact of all Airbus 380 main landing gears taking into consideration the design factor of tensile stresses at the top and bottom of a concrete slab. The top-down cracking in concrete slabs has not been directly simulated in structural analysis models used for one- and two-layer concrete airfield pavement design by the Ukrainian Standard. Empirical formulas for the calculation of top tensile stress and the coverages to failure using the criterion of top tensile

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19

Eratodi, I. Gusti Lanang Bagus, Ali Awaludin, Ay Lie Han, and Andreas Triwiyono. "Evaluation and Study of Prestressed Slab Structure Precast Modular Concrete." MEDIA KOMUNIKASI TEKNIK SIPIL 26, no. 1 (2020): 44–51. http://dx.doi.org/10.14710/mkts.v26i1.27765.

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Prestressed precast modular concrete slabs function rigid pavement, supporting vehicle loads above it on subgrade with relatively low bearing capacity. This slab measures 2000 x 850 x 150 mm3 of regular reinforced concrete (old production) or prestressed concrete (new production) quality K-500. After several times of use, damage occurs mainly at the end of the slab in the form of spalling. The objectives of the study and evaluation were: (1) observing damage; (2) material quality data; (3) numerical modeling by taking into account material properties, loading and soil conditions; and (4) provi

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20

Milijaš, Aleksa. "Analysis of the Behaviour of Composite Connections in Multi-Storey Buildings Under Earthquake Loading." IPSI Transactions on Internet Research 20, no. 1 (2024): 79–87. http://dx.doi.org/10.58245/ipsi.tir.2401.08.

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In the past years, number of beams and slabs in steel structures that are executed as composite steel – concrete elements has significantly increased. In moment-resisting frames with composite steel – concrete slabs, slab reinforcement in tensile zone needs to be considered in design of composite steel – concrete beam – to – column connections with steel plates and bolts in tensile zone. However, the number of reinforcement bars that should be taken into account in connection design significantly depends on the effective width of the concrete slab. Moreover, directions for calculation of the e

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21

Vaitkus, Audrius, Rita Kleizienė, Viktoras Vorobjovas, and Donatas Čygas. "Mixture Strength Class and Slab Dimensions’ Effect on The Precast Concrete Pavement Structural Performance." Baltic Journal of Road and Bridge Engineering 14, no. 3 (2019): 443–71. http://dx.doi.org/10.7250/bjrbe.2019-14.452.

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Mechanical properties and slab dimensions of concrete are the major parameters based on which the performance of concrete pavement structures is predicted. Precast concrete pavement, as one of the most common modular pavement type, is the advanced next-generation technology characterised as high quality, durable, quickly built and easily maintained. The service conditions of precast concrete pavement (traffic loading and environmental effects) are similar to the conventional cast-in-place jointed plain concrete pavement. Thus, the precast concrete pavement structural design is similar to that

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22

Han, Zebin, Wenjun Qu, and Peng Zhu. "Research on Hybrid FRP–Steel-Reinforced Concrete Slabs under Blast Load." Buildings 13, no. 4 (2023): 1058. http://dx.doi.org/10.3390/buildings13041058.

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The service environment of civil air defense engineering structures is relatively harsh, and the corrosion of steel bars is the main reason for reducing the durability of concrete structures in civil air defense engineering. A hybrid FRP–steel-reinforced concrete (hybrid-RC) structure has excellent durability. Therefore, it is a good choice to apply hybrid-RC to civil air defense engineering structures. In order to study the blast resistance of hybrid-RC structures, close blast and contact blast experiments were carried out on hybrid-RC slabs, steel-reinforced concrete (SRC) slabs and GFRP-rei

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23

Kamble, Rushikesh U., Musharaff S. Shaikh, Shagufa M. Sayyed, Ansar A. Sayyad, and Prof Hari D. Aiwale. "Comparative Study of Bubble Deck Slab with Conventional R.C.C Slab." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 183–87. http://dx.doi.org/10.22214/ijraset.2022.42141.

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Abstract: When designing a reinforced concrete structure a primary design limitation is the span of the slabbetween the columns. Designing large spans between columns often requires very thick slabs thereby increasing the weight of the structure by requiring use of larger amounts of concrete. Heavier structures are less desirable than light weight structures in seismically active regions because a larger dead load for a building increases the magnitude of inertia forces which the structure must resist as larger dead load contributes to higher seismic weight. A new solution to reduce the weight

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24

Miller, Olga, Oliver Gericke, David Nigl, Daria Kovaleva, and Lucio Blandini. "Simulation-Based Investigations of the Load-Bearing Behavior of Concrete Hollow Sphere Slabs Exposed to Fire." Fire 5, no. 6 (2022): 197. http://dx.doi.org/10.3390/fire5060197.

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This paper concerns the investigations of the flexural capacity of concrete slabs with integrated concrete hollow spheres that are subjected to fire and their mass saving potential compared to solid slabs. (1) Background: The overuse of concrete in construction contributes considerably to global CO2 emissions; therefore, the potential for mass reduction in structural components must be fully exploited. However, the design regulations for weight-minimized components, particularly slabs with internal voids, are often not explicitly covered by standards, such as the fire design standard relevant

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25

Fillo, Ľudovít, Jaroslav Halvonik, and Viktor Borzovič. "Punching of Concrete Flat and Foundation Slabs." Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series. 14, no. 1 (2014): 1–7. http://dx.doi.org/10.2478/tvsb-2014-0001.

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Abstract This paper deals with punching of flat and foundation slabs. Te paper presents limiting values of maximum punching resistance of these slab structures with sudden and brittle mode of failure. In the paper are introduced graphs for design of flat and foundation slab thickness depending on load intensity, span length and reinforcement ratio.

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26

Matseevich, Tatiana. "Finite Element Analysis of the Bearing Capacity of Beamless Floor Slabs under Punching, Taking into Account the Design Parameters of the Contacting Elements." Buildings 13, no. 5 (2023): 1221. http://dx.doi.org/10.3390/buildings13051221.

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Static calculations of experimental models in an elastic formulation were carried out, and the regularities connecting the dependences of forces in the calculated cross-section of punching out from the main structural parameters of contacting elements (reinforced concrete slabs and pylons) and from the used concrete class were revealed. This article concerns the safety issues of reinforced concrete slabs under punching with different ratios and combinations of pylon and slab thickness parameters, as well as concrete strength. The objectives of the research are consideration of the fracture pat

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27

Zhang, Yan Kun, Shao Yu Zhang, and Xiao Er Zhou. "Finite Element Analysis on Mechanical Properties of Light-Weight Aggregate Concrete Composite Slab." Advanced Materials Research 250-253 (May 2011): 168–71. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.168.

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By finite element method, experimental results of the light-weight aggregate concrete composite slab are compared with the numerical simulation.. On the basis, nine composite slab specimen are designed. The loading process, includes the slab cracking, the yielding of steel plates, damaging of slabs are simulated, and the influencing factors, such as male pin, thickness of deck, and spacing of transverse shear reinforcing bars, etc. is studied. At last, the spacing of transverse shear reinforcing bars of light-weight aggregate concrete composite slab is given, and it is useful to the engineerin

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28

Gurubasav, Hiremath, Holeyappanavar Gururaj, and Chavan Akash. "Analysis of a ribbed slab without reinforcement using ANSYS." i-manager's Journal on Structural Engineering 11, no. 2 (2022): 31. http://dx.doi.org/10.26634/jste.11.2.18966.

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Concrete is widely used as a construction material in the world and consequently cement manufacturing industry ranks second in CO2 emission. To mitigate this environmental issue, this research focuses on reducing the self-weight of a concrete slab applying modern techniques to cut down the usage of cement, cutting carbon emissions from the cement manufacturing industries. The main goal of the study is to reduce the self-weight of concrete slabs and to eliminate steel reinforcement in concrete, and to use this stress profile to determine the isostatic path in concrete slabs. This would be achie

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29

Uglyanitsa, Andrey. "Construction of Buildings and Structures on Rock Concrete Compensation Slabs when Building in Subsided Areas of Abandoned Coal Mines and Open Pits." E3S Web of Conferences 174 (2020): 01058. http://dx.doi.org/10.1051/e3sconf/202017401058.

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For building in subsided areas of abandoned coal mines and open pits on soils damaged by anthropogenic impact and mining operations, it is proposed to base buildings and structures on a three-layer slab founda- tion including: a solid reinforced concrete foundation slab, a sub-ballast of ground overburden burnt rocks and a rock concrete compensation slab lo- cated between them. During subsidence of damaged soils, the rock concrete compensation slab, collapsing and increasing in volume, fills the sinkhole lens under the building with pieces of rock concrete, protecting the rein- forced concrete

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30

Xu, Bangshu, Wanzhi Zhang, Jie Mei, Guangyao Yue, and Laihua Yang. "Optimization of Structure Parameters of Airfield Jointed Concrete Pavements under Temperature Gradient and Aircraft Loads." Advances in Materials Science and Engineering 2019 (April 24, 2019): 1–11. http://dx.doi.org/10.1155/2019/3251590.

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Daily changing temperature causes significant thermal stress in concrete pavement. Tensile stress obtained can exceed flexural tensile strength when the concrete slabs are subjected to large temperature gradient and traffic loads, resulting in pavement damages. In this paper, maximum tensile stresses in concrete slabs with different slab sizes, thicknesses, and length to width (L/W) ratios were investigated by using the finite element (FE) method. The important parameters in the design of concrete pavement are the flexural tensile strength and the fatigue limit. By analyzing the comparison res

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31

Mamontov, Alexandr V., Vladimir N. Nefedov, Igor V. Nazarov, Valentin P. Simonov, and Sergey A. Khritkin. "The foam concrete temperature measuring during its microwave heat treatment." Izmeritel`naya Tekhnika, no. 4 (2021): 44–48. http://dx.doi.org/10.32446/0368-1025it.2021-4-44-48.

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The actual problem of accelerating and reducing the energy costs of the foam concrete slabs heat treatment technological process is considered. It is shown that to solve this problem, it is advisable to use the microwave radiation energy as a heat source. The main advantages of the microwave method of foam concrete slabs heat treatment in comparison with traditional methods are considered. The design of a microwave installation for the foam concrete slabs heat treatment has been developed. The installed microwave radiation sources have energy outputs in the form of a rectangular waveguide open

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32

Morin, Richard, Ghfran Al Chami, Richard Gagné, and Benoit Bissonnette. "Design Considerations and Innovative Approach for Restoration of Historic Landmarks in Old Montreal." MATEC Web of Conferences 199 (2018): 07003. http://dx.doi.org/10.1051/matecconf/201819907003.

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Restoration of some streets in Old Montreal is achieved using granite pavers bonded with a mortar bed to a concrete slab. The technique was originally used for the pavement of St-Paul Street with stone bricks back in the 1800's. A similar approach is being used in 2016 to renovate the very same street, except for the materials used in casting the foundation slab. In order to space out the expansion joints and prevent drying shrinkage cracking, fibre reinforcement and an expansive component are incorporated in the concrete. The concept was successfully used in bridge deck rehabilitation project

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Gupta, Sushant, and Sanjeev Naval. "Analysis of Orthotropic RC Rectangular Slabs Supported on Two Adjacent Edges - A Simplistic Approach." Civil Engineering Journal 6, no. 10 (2020): 1992–2001. http://dx.doi.org/10.28991/cej-2020-03091598.

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The design of reinforced concrete slabs supported on two adjacent edges involves complex formulations. In this paper, a simplistic approach is presented for designing orthotropic slabs supported on two adjacent edges. Slab supported on two adjacent edges (existing slab) is transformed into a slab supported on three edges (equivalent slab) by taking a mirror image of the yield line pattern of two adjacent edges supported RC slabs about its unsupported edges to get the exact collapse mechanism for the slabs supported on three edges. The equivalent aspect ratio can be used in the equations alread

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34

Abdallah, Marwa Hameed, Zainab Abdulrdha Thoeny, Sadiq N. Henedy, et al. "The Machine-Learning-Based Prediction of the Punching Shear Capacity of Reinforced Concrete Flat Slabs: An Advanced M5P Model Tree Approach." Applied Sciences 13, no. 14 (2023): 8325. http://dx.doi.org/10.3390/app13148325.

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Reinforced concrete (RC) flat slabs are widely employed in modern construction, and accurately predicting their load-carrying capacity is crucial for ensuring safety and reliability. Existing design methods and empirical equations still exhibit discrepancies in determining the ultimate load capacity of flat slabs. This study aims to develop a robust machine learning model, specifically the M5P model tree, for predicting the punching shear capacity of a RC flat slab without shear reinforcement. A comprehensive dataset of 482 experimentally tested flat slabs without shear reinforcement was gathe

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35

César, Andrés, and Mauricio Pradena. "Sustainable Engineering: Load Transfer Characterization for the Structural Design of Thinner Concrete Pavements." Sustainability 12, no. 21 (2020): 9153. http://dx.doi.org/10.3390/su12219153.

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Concrete pavements are characterized by their high durability and low conservation costs. However, concrete production causes large amounts of harmful emissions. In this context, short slab pavements allow us to reduce the slab thickness and the amount of concrete used in their construction. These benefits are only valid if the design assumptions are fulfilled, one of which is the provision of enough Load Transfer Efficiency (LTE) by the aggregate interlock. However, the current design method for short slabs does not relate the LTE with the Crack Width (CW) under the joints. This can jeopardiz

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36

Mohammed, Tamara Amer, and Hayder Mohammed Kadhim. "Effect of Pumice Stone and Sugar Molasses on the Behavior of Reinforced Concrete One-Way Ribbed Slabs." Civil Engineering Journal 8, no. 2 (2022): 334–47. http://dx.doi.org/10.28991/cej-2022-08-02-011.

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The world is currently heading towards sustainability by reducing the amount of concrete, thus reducing the total unit weight. Moreover, design construction requires materials with a higher strength-to-weight ratio. Ribbed slabs and lightweight concrete (LWC) are considered two leading sustainability facilities. This research developed an experimental study to evaluate the effects of concrete type, steel reinforcement ratio, the geometry of ribs, voiding ratio, and slab type on the structural behavior of one-way ribbed slabs. Eight of the one-way slabs were constructed using pumice stone and b

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37

Bakht, Baidar, and Akhilesh C. Agarwal. "Deck slabs of skew girder bridges." Canadian Journal of Civil Engineering 22, no. 3 (1995): 514–23. http://dx.doi.org/10.1139/l95-060.

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Canadian codes allow the design of concrete deck slabs of slab-on-girder bridges by taking account of the internal arching action that develops in these slabs under concentrated wheel loads in particular. Provided that certain prescribed conditions are met, a deck slab is deemed to have met the design criteria if it is provided with a top and a bottom layer of steel reinforcement with each layer consisting of an orthogonal mesh of steel bars in which the area of cross section of the bars in each direction is at least 0.3% of the effective area of cross section of the deck slab. For deck slabs

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38

Saberi, Miad, Charles-Darwin Annan, and Jean-Marie Konrad. "Numerical analysis of concrete-faced rockfill dams considering effect of face slab – cushion layer interaction." Canadian Geotechnical Journal 55, no. 10 (2018): 1489–501. http://dx.doi.org/10.1139/cgj-2017-0609.

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In this study, the effect of concrete face slab – cushion layer interface behavior on the performance of face slabs in concrete-faced rockfill dams (CFRDs) is investigated using the finite element method. The body of the CFRD is simulated by the cap elastoplasticity model while the interface zone between the concrete face slab and the gravelly cushion layer is simulated explicitly by an advanced interface constitutive model, developed in the framework of critical state soil mechanics and state parameters, and capable of simulating volumetric behavior and stress path dependency. The effect of e

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39

Okonkwo, V.O.; Mezie E.O.; Adinna B.O. and Ezeh A.I. "Investigation of Deflection and Cracks in Reinforced Concrete Solid Slabs as a Function of Thickness Using Staad Pro and Tekla Tedds." Journal of Science and Technology Research 5, no. 3 (2023): 71–87. https://doi.org/10.5281/zenodo.8285795.

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<em>In this study, the effect of variation of thickness of slab on the deflection and crack width of solid slabs were analysed. The thickness of the slab were varied by 150 mm, 175 mm and 200 mm. The design conditions also varied were concrete grade, spacing of reinforcement and size of reinforcement. A two-way slab of size 6 m by 5 m was loaded with varying dead loads and constant live loads and analysed in StaadPro to obtain the internal stresses. Thereafter, the results of the internal stresses were applied in Tekla Tedds software while varying the design conditions to examine the effect on

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40

Chebo, Kamal Amin, Yehya Temsah, Zaher Abou Saleh, Mohamad Darwich, and Ziad Hamdan. "Experimental Investigation on the Structural Performance of Single Span Hollow Core Slab under Successive Impact Loading." Materials 15, no. 2 (2022): 599. http://dx.doi.org/10.3390/ma15020599.

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In Lebanon and many other countries where structures are vulnerable to impact loads caused by accidental rock falls due to landslides, specifically bridges with hollow core slab, it is mandatory to develop safe and efficient design procedures to design such types of structures to withstand extreme cases of loading. The structural response of concrete members subjected to low velocity high falling weight raised the interest of researchers in the previous years. The effect of impact due to landslide falling rocks on reinforced concrete (RC) slabs has been investigated by many researchers, while

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Nachiar S, Sindhu, Anandh S, and Jeyem Veerarajan. "Study on Behaviour of Cellular Concrete Slab." International Journal of Engineering & Technology 7, no. 2.12 (2018): 420. http://dx.doi.org/10.14419/ijet.v7i2.12.11509.

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Generally for any construction, normal conventional concrete is used to obtain required strength as per design. In the construction industry, now a day’s many construction techniques are in practice to minimise the self weight of concrete, thereby reducing the size of structural elements. One of the most widely adopting techniques is use of light weight concrete. But use of these light weight concrete do not fulfil the strength requirement as per the design of the structure. Hence it is used only as non-load bearing structural elements in the field. In view of this, in this study the attempt h

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Andrii, Bambura, Mel'nyk Ihor, Bilozir Vitaliy, Sorokhtey Vasyl, Prystavskyi Taras, and Partuta Volodymyr. "THE STRESSED-DEFORMED STATE OF SLAB REINFORCED-CONCRETE HOLLOW STRUCTURES CONSIDERING THE BIAXIAL COMPRESSION OF CONCRETE." Eastern-European Journal of Enterprise Technologies 1, no. 7 (103) (2020): 34–42. https://doi.org/10.15587/1729-4061.2020.194145.

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In order to significantly reduce the weight of flat monolithic reinforced concrete floors, foundations, and other slab structures, construction operations have increasingly involved effective inserts as the separate articles made from relatively light and cheap materials that are placed in the midsection and left in the slabs after concreting. The inserts made from relatively light and cheap materials, with respect to concrete, have the strength and rigidity that are orders of magnitude less and are essentially used to form hollows. The inserts considered in this paper are prismatic. When the

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Heronilda, Andaque, and Sadeghi Kabir. "Comparison Between Timber Concrete Composite Slab and Solid Slab for Residential Buildings." International Journal of Innovative Science and Research Technology 8, no. 5 (2023): 612–23. https://doi.org/10.5281/zenodo.7950950.

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This research aims to compare Timber concrete slabs (TCC) with solid slabs (RC) to show that TCC may be used to minimize building weight and construction costs. Moreover, the purpose of this project is to use CypeCAD software to design a one-way TCC slab and a two-way solid slab, analyze the data supplied in the software, and compare the findings according to the Eurocode standard. The results illustrate that although the timber concrete composite slab is a new constructive solution and is little used in many constructions, it is less expensive compared to the conventional solution adopted in

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Chung, Joo Hong, Hyun Ki Choi, Chang Sik Choi, and Hyung Suk Jung. "Punching Shear Design Method of Voided Slabs." Key Engineering Materials 754 (September 2017): 333–36. http://dx.doi.org/10.4028/www.scientific.net/kem.754.333.

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Анотація:

This study presents punching shear design method of voided slab in accordance with arrangement of voids around columns. According to previous studies, the slab-column connection of voided slabs is weaker than that of the solid slab due to the lack of cross-sectional area of concrete by voids. In this study, it is assumed that the arrangement of voids exert influence on the punching shear strength of voided slabs. To verify the assumption, finite element analysis was conducted related with previous test results. The variable of FE analysis was a distance between voids and column face. Based on

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45

Istomin, Andrey, and Maksim Kudryavtsev. "Strength of cast-in-place slabs for rectangular cross-section columns punching." E3S Web of Conferences 263 (2021): 02035. http://dx.doi.org/10.1051/e3sconf/202126302035.

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Анотація:

Flat slabs in contemporary buildings are most commonly supported by rectangular cross-section columns. Research of slabs supported by rectangular cross-section columns for punching is rather narrow. The purpose of this work was the experimental research of slabs punching by rectangular cross-section columns and adjustment of their design method. Reinforced concrete slabs 6 cm in thickness without transverse reinforcement were used as testing specimens. During tests load on the slab was transferred using stamps. Side ratios for stamps varied from 1 to 5 in experiments. Strength and strain prope

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46

Nishizawa, Tatsuo, Yoshiki Murata, and Katsuro Kokubun. "Mechanical Behavior of Ultrathin Whitetopping Structure Under Stationary and Moving Loads." Transportation Research Record: Journal of the Transportation Research Board 1823, no. 1 (2003): 102–10. http://dx.doi.org/10.3141/1823-12.

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The structural design of ultrathin whitetopping (UTW) requires precise predictions of the loading stresses in the concrete slabs. A plate finite element model (FEM) is not used for structures with UTW because the model is not able to account for the asphalt subbase behaviors and the mechanical interaction between the concrete slab and asphalt subbase. A three-dimensional FEM (3DFEM) was used for the stress calculation of UTW. To take into account the mechanical interaction at the interface between the concrete slab and asphalt subbase as well as the load transfer across the joint, a general in

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47

Vinnakota, Murthy R., Christopher M. Foley, and Sriramula Vinnakota. "Design of Partially or Fully Composite Beams with Ribbed Metal Deck Using LRFD Specifications." Engineering Journal 25, no. 2 (1988): 60–78. http://dx.doi.org/10.62913/engj.v25i2.498.

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A Hindu saying states, "One picture is worth a thousand words (numbers)." With this optic in mind, the design aspects of steel-concrete composite beams using the recently adopted LRFD specifications are analyzed critically and the significance of several parameters is brought out clearly. Charts are then constructed to facilitate the design of partially or fully composite beams using rolled-steel, wideflange sections of A36 steel or A572 Gr. 50 steel. The slab may be a composite metal deck slab with ribs perpendicular to the beam, a haunched slab or, simply, a flat soffit concrete slab. The ch

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Wang, Peng, Di Shi, and Pei Ling Sun. "Design of Concrete Voided Slab of Highway Bridge Pretensioned with CFRP Tendons." Applied Mechanics and Materials 578-579 (July 2014): 477–82. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.477.

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Анотація:

The concrete voided slab pretensioned with CFRP tendons is a new type slab for bridge construction. The problems such as the anchorage, loss of prestress, prestressed tendons configuration etc. are discussed, then through the analysis of structure, the characteristics and key points of design methods are put forward. With a 20m span slab as an example, a comparative study is conducted on the concrete voided slab pretensioned with different tendons of CFRP or steel. The analysis shows that the concrete voided slab pretensioned with CFRP tendons is feasible in engineering.

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Bakht, Baidar. "Revisiting arching in deck slabs." Canadian Journal of Civil Engineering 23, no. 4 (1996): 973–81. http://dx.doi.org/10.1139/l96-902.

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Анотація:

The arching action in concrete deck slabs of girder bridges is generally recognized and is utilized by the Ontario Highway Bridge Design Code, and some other codes, to specify an empirical design method which leads to considerable savings in the amount of reinforcement. Despite this general recognition, there are some aspects of the arching action that are yet to be explored. To the knowledge of the author, all reported laboratory and field tests on deck slabs exploring its arching action under applied loads have been conducted by measuring strains in the bottom transverse reinforcement midway

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Paultre, Patrick, and Caroline Moisan. "Distribution of moments in reinforced concrete slabs with continuous drop panels." Canadian Journal of Civil Engineering 29, no. 1 (2002): 119–24. http://dx.doi.org/10.1139/l01-076.

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Slabs with continuous drop panels between column lines facilitate formwork, make long spans possible in addition to increase punching shear resistance around supports and provide unobstructed spans with minimum structural floor depth resulting in lower floor-to-floor heights. The moment distribution in such slabs is different from that in conventional flat plates or slabs with drop panels systems. Dimensioning according to the current provisions in CSA A23.3-94 is problematic because the continuous drop panels are subject to moments exceeding the minimum values allowed by the Code for conventi

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