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Добірка наукової літератури з теми "Concrete slab Design"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 19 липня 2025

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Статті в журналах з теми "Concrete slab Design"

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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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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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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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 Objectives: 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. Methods: 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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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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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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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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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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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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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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Дисертації з теми "Concrete slab Design"

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.

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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

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

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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-ar

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El-Hafez, L. M. A. "Direct design of reinforced concrete skew slabs." Thesis, University of Glasgow, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383130.

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Manatakos, Kyriakos. "Behaviour and design of reinforced concrete core-slab-frame structures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30330.pdf.

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Manatakos, Kyriakos 1960. "Behaviour and design of reinforced concrete core-slab-frame structures." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=42088.

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This dissertation examines the response and design of reinforced concrete core-slab-frame structures subjected to monotonically increasing earthquake and gravity loads throughout the entire load range until failure, presenting findings from three separate studies by Manatakos and Mirza (1995) continuing the M. Eng. thesis research by Manatakos (1989). A typical building is selected consisting of a central core substructure composed of elevator, staircase and infilled slab cores, with coupling and lintel beams, and surrounding slabs joining to a frame substructure composed of slab-band girders,

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Zou, Yunyi. "FRP Reinforced Concrete and Its Application in Bridge Slab Design." Case Western Reserve University School of Graduate Studies / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=case1101960743.

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Cheung, (Patrick) Pak Chiu. "Seismic design of reinforced concrete beam-column joints with floor slab." Thesis, University of Canterbury. Civil Engineering, 1991. http://hdl.handle.net/10092/9451.

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Beam-column joints are addressed in the context of current design procedures and performance criteria for reinforced concrete ductile frames subjected to large earthquake motions. Attention is drawn to the significant differences between the pertinent requirements of concrete design codes of New Zealand and the United States for such joints. The difference between codes stimulated researchers and structural engineers of the United States, New Zealand, Japan and China to undertake an international collaborative research project. The major investigators of the project selected issues and set gui

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Hon, Alan 1976. "Compressive membrane action in reinforced concrete beam-and-slab bridge decks." Monash University, Dept. of Civil Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/5629.

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Midkiff, Corey J. "Plastic voided slab systems: applications and design." Kansas State University, 2013. http://hdl.handle.net/2097/16874.

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Master of Science Department of Architectural Engineering Kimberly Waggle Kramer Reinforced concrete slabs are one of the most common components in modern building construction. Reinforced concrete slabs with plastic voids slabs are a new and innovative type of structural, concrete slab system developed to allow for lighter self-weight of the structure while maintaining similar load carrying capacity of a solid slab. Plastic voided slabs are capable of reducing the amount of concrete necessary to construct a building by 30 percent or more. This reduction can be beneficial in terms

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MONTALVERNE, ALEXANDRE MIRANDA. "DESIGN OF CONCRETE SLAB PANELS USING THE FINITE ELEMENT METHOD AND MATHEMATICAL PROGRAMMING." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1998. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=2059@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO Neste trabalho apresenta-se ferramentas computacionais para o projeto de lajes maciças de concreto armado. O projeto de lajes é feito utilizando-se uma análise elástica, elasto- plástica perfeita, um dimensionamento ótimo utilizando programação matemática e um projeto pela análise plástica. O projeto convencional de lajes de concreto armado tem sido feito a partir de esforços solicitantes determinados pela hipótese de comportamento linear elástico do material. Utilizando-se as ferramentas computacionais desenvolvidas neste

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Книги з теми "Concrete slab Design"

Kwieciński, Marek. Collapse load design of slab-beam systems. Ellis Horwood, 1989.

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Kramer, George. Slab, beam & girder bridges in Oregon: Historic context statement. Heritage Research Associates, 2004.

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Kramer, George. Slab, beam & girder bridges in Oregon: Historic context statement. Heritage Research Associates, 2004.

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American Concrete Institute. Committee 352. Recommendations for design of slab-column connections in monolithic reinforced concrete structures. American Concrete Institute, 1988.

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Gibbs, Robert J. Comparative study of design methods for two-way reinforced concrete slab systems: An engineering report in civil engineering. Available from the National Technical Information Service, 1990.

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L, Gamble W., ed. Reinforced concrete slabs. 2nd ed. Wiley, 2000.

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360, American Concrete Institute Committee. Design of slabs on grade. American Concrete Institute, 1992.

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Monotti, Mario. Reinforced concrete slabs: Compatibility limit design. Verlag der Fachvereine Hochschulverlag AG an der ETH Zurich, 2004.

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ACI Committee 421. Guide to shear reinforcement for slabs. American Concrete Institute, 2008.

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St. Onge, Ruff Construction Services., ed. Concrete floor slabs for industrial facilities. St. Onge, Ruff Construction Services, 1997.

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Частини книг з теми "Concrete slab Design"

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

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Ghosh, Somnath, and Kushal Ghosh. "Design of Slab System." In Reinforced Concrete Design. CRC Press, 2024. http://dx.doi.org/10.1201/9781003208204-8.

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Zhang, Binghe, Yicai Yang, Haijun Jiang, Zhangsheng Yue, and Shumin Wan. "Experimental and Simulation Study on the Stress Characteristics of Precast U-Shaped Beam Slab of Prestressed Concrete for High-Speed Railways." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-5814-2_10.

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AbstractThe precast U-shaped beam slab of prestressed concrete is a crucial structural form in railway bridge construction, with its stress characteristics directly affecting the safety and stability of railway bridges. This study examines the stress characteristics of the slab track, including transverse bending, shear lag effects, and the stress state at the junction between the web and the bottom slab. It selects precast U-beams from actual field projects to investigate the transverse bending performance, shear lag effects, and stress conditions at the junctions through experimental studies. Additionally, by integrating the results of linear and nonlinear finite element analysis, it summarizes the stress characteristics of precast U-shaped beam slabs made of prestressed concrete. This provides references for the design and construction of precast U-shaped beam slabs of prestressed concrete.

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Wang, Zijian, Baosheng Rong, Xin Zhang, Hanxiu Fan, and Liming Wu. "Effect of Cyclic Loading on Mechanical Properties of Lap Joints of Prefabricated Steel Fiber Pavement Slabs." In Novel Technology and Whole-Process Management in Prefabricated Building. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-5108-2_32.

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AbstractIn This paper establishes a finite element model of an assembled steel fiber reinforced concrete pavement slab with lap joints under cyclic loading to analyze the mechanical performance of the slab after 200 and 500 cycles of a vehicle speed of 50 km/h and an axle load of 200 kN. Through finite element software analysis, the curve of the deflection value of the fabricated steel fiber reinforced concrete pavement slab over time is obtained, and a comparative analysis is conducted on the deflection value of the pavement slab under different cycle numbers. The study found that the bending deflection curve of the plate neutralized joints after 200 and 500 vehicle load cycles showed similar patterns, with a maximum deflection value of approximately 0.35 mm; The variation in the plate and joint areas becomes more and more obvious with the increase in the number of cycles, indicating that vibration has an impact on the pavement plate. These conclusions have certain reference value for the design and maintenance of road pavement panels.

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Das Gupta, N. C., and C. H. Yu. "Optimal Design of Prestressed Concrete Composite Slab by Geometric Programming." In Computer Aided Design in Composite Material Technology III. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2874-2_32.

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Xiao, Liang, Qingtian Su, and Fuyu Wang. "Experimental design of SFRC link slab in steel-concrete composite bridge." In Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability. CRC Press, 2022. http://dx.doi.org/10.1201/9781003322641-179.

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Khichad, Jeetendra Singh, Rameshwar J. Vishwakarma, Prasad V. Bahekar, and Sushilkumar B. Magade. "Effect of Slab Size on Design of Jointed Plain Concrete Pavement." In Recent Developments in Structural Engineering, Volume 1. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-9625-4_27.

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Jia, Yueqiao, and Jeffrey Chiang Choong Luin. "Finite Element Analysis of Reinforced Concrete Slab-Rectangular Column Connections Using ABAQUS." In Advances in Frontier Research on Engineering Structures. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8657-4_4.

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AbstractRectangular columns used in flat-slab structures run the risk of punching shear damage due to stress concentrations, especially when bending moments and vertical forces act together at the connections. Using the finite element analysis method, the existing experiments are numerically simulated using the 3D modeling software ABAQUS, and describe the cracking behavior of concrete using the concrete damaged plasticity model. The accuracy of the numerical simulation was calibrated by load–displacement curves and crack patterns using the experimental results. The study of the model was set up with different moment-to-shear ratios and outputs the trend of the average shear stress on the eccentric force side of the slab. The moment transfer coefficients are derived through the equation of ACI-318 and compared with the code values. A safe range of side length ratios is proposed to reduce the risk of punching shear damage from the use of rectangular columns. This provides a reference for practical design, but more experiments are needed to support the proposed recommendations.

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Vejrum, P., and M. S. Jensen. "Design and construction of a ribbed concrete slab based on isostatic lines." In Structures and Architecture A Viable Urban Perspective? CRC Press, 2022. http://dx.doi.org/10.1201/9781003023555-149.

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Wang, Yaojun, Bingbing Liu, and Qianqian Hao. "Mechanical Behaviors of Encased Concrete of Composite Bridges with Corrugated Steel Web." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4090-1_2.

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AbstractThe encased concrete in a composite bridge with corrugated steel web (CSW) is a critical structure to improve the stability of the web and relieve the stiffness difference between the composite girder and intermediate crossbeam. This study aims to investigate the effects of the encased concrete on the mechanical behaviors of composite girder bridges with CSWs. The finite element model of a rigid frame bridge is established, the calculation method of the shear force sharing ratio of the encased concrete is proposed, and the effect of the length and thickness of the encased concrete is analyzed. The results show that the encased concrete was under compression in longitudinal direction, while vertical tensile stresses occur near the transition section between pure CSW and the composite web. The encased concrete shares 65–90% of the total shear force, and the shear force sharing ratio increases with the increase of the concrete thickness. Increasing the length of the encased concrete reduces the deflection of the girder and pre-compression stress of the top concrete slab. All the findings of present study may provide reference for the design of composite girder bridges with CSWs.

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Тези доповідей конференцій з теми "Concrete slab Design"

Tian, Jiaxin, Chen Liang, Yuqing Liu, and Weixiang Zhou. "Stress Distribution in the Concrete Slab of Composite Cable-stayed Bridges." In IABSE Symposium, Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches. International Association for Bridge and Structural Engineering (IABSE), 2025. https://doi.org/10.2749/tokyo.2025.3018.

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To provide reference for the fatigue design of the concrete slab in composite cable-stayed bridge, a three- dimensional finite element half-bridge model and a one-dimensional beam element model were established. The eccentricity distribution and the stress state of the concrete slab under dead load and live load cases were studied, and the longitudinal and transverse stress distribution laws were revealed. The finite element results were compared with the existing design methods. Results show that the ratio of the eccentricity to the thickness of the concrete slab ranges from -0.11 to

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Moor, Gianni, Colm O’Suilleabhain, Xinlu Liu, Janice Chen, and Rafael Dubs. "Evaluation of reductions in carbon emissions from building construction due to innovative approaches to floor construction." In IABSE Congress, San José 2024: Beyond Structural Engineering in a Changing World. International Association for Bridge and Structural Engineering (IABSE), 2024. https://doi.org/10.2749/sanjose.2024.0841.

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This paper summarizes the findings of an analysis of the relative CO2 emissions associated with different approaches to the design of floor slabs in building construction, including the beams and columns that support the floor. Four approaches, including innovative methods such as re-use of concrete slab with the slab elements supported by post-tensioned beams, were assessed, and compared with a standard reference design. The analysis concluded that upfront carbon emissions may be drastically reduced by selecting suitable approaches to building construction. For example, a 70% reducti

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Heywood, Kate, and Paul Nicholas. "3D Concrete Printing in a Circular Economy: What We Can Learn From a 3DCP Slab Designed for Dissassembly." In CAADRIA 2024: Accelerated Design. CAADRIA, 2024. http://dx.doi.org/10.52842/conf.caadria.2024.3.271.

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Wang, Chuchong, Honglei Zhao, Yongjie Jiang, and Liangru Deng. "Standardized Design Method for Prefabricated Concrete Base Slab with Multiple Schemes and Multidimensional Evaluation." In Conference Proceedings of The 12th International Symposium on Project Management, China. Aussino Academic Publishing House (AAPH), 2024. http://dx.doi.org/10.52202/076061-0113.

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Rahman, Muhammad K., Mesfer M. Al-Zahrani, Mohammed Fasil, and Sami Al-Abdul Jabbar. "Numerical Simulation of Punching Shear Capacity of GFRP Bar Reinforced Concrete Slabs-on-Ground Designed for Shrinkage and Crack Width Control." In MECC 2023. AMPP, 2023. https://doi.org/10.5006/mecc2023-20047.

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Abstract Reinforced concrete structures such as slabs-on-ground develop cracks due to drying shrinkage and thermal loading before concentrated vehicle loads are applied to them. These cracks are conduits for ingress of chloride, leading to corrosion of the steel and damage to the slabs. Grade supported slabs reinforced with non-corroding GFRP bars are an attractive alternative that could provide a maintenance free service life of over 100 years. The punching shear capacity of GFRP bars reinforced slabs-on-ground, which are primarily designed to control shrinkage and crack width, has not been i

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Math, Sujay, Clem Firlotte, and Ali Akbar Sohanghpurwala. "Condition assessment, ICCP design, installation and commissioning of a carbonated and salt contaminated reinforced concrete parking deck." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05696.

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Abstract The Port Authority of Alleghany County (Pittsburgh), PA operates a garage facility where public transit busses are maintained and repaired. The roof of this garage is an open air reinforced concrete parking deck for employee and authority vehicles. This reinforced concrete slab has been subjected to both deicing salts on the top side and carbonation from the maintenance and repair operations on the bottom, which have caused corrosion damage to the reinforcing steel. The Port Authority has let a contract to repair this parking deck with a desired life expectancy of 25 years. This paper

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Chaudhary, Zia, Saad Awad Al-Shehri, Fallatah Baker, Abduh Hakami, and Tahir Iqbal. "Deterioration and Rehabilitation of a Newly Built Pre-Cast Reinforced Concrete Seawater Cooling Tower." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10124.

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Abstract The support structure of the seawater cooling tower (CT) comprised of pre-cast columns, beams, and slab panels and in-situ cast foundations and pedestals. Several leaks appeared across the entire support structure in the high density polyethylene (HDPE) liner that was laid over the slab panels to contain seawater. About 40% of the slab panels, beams, and columns were contaminated with seawater. Thick salt deposits covering large areas were visible at several locations. The 2005 condition survey results showed, chloride ion content at the rebar depth in well excess of the threshold lim

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Simon, Philip D. "Improved Current Distribution Due to a Unique Anode Mesh Placement in a Steel Reinforced Concrete Parking Garage Slab CP System." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04345.

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Abstract This paper presents design and operational characteristics of the cathodic protection (CP) system designed to mitigate future corrosion damage to steel reinforcement (rebar) in the concrete floor slab and selected ramps of the parking garage below the MONY twin tower office building in Syracuse, NY. This system was installed during the rehabilitation of this garage and covers 144,800 square feet (13,452 square meter) of the floor slab and some ramp areas. Corrosion due to contamination from deicing salts had caused severe damage to the top mat of steel and the concrete of the cellar f

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Hartt, William H. "Exposure Testing of Chloride Exposed Reinforced Concrete and Potential Misrepresentation of Service Performance." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05460.

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Abstract Exposure testing of concrete block or slab specimens by cyclic chloride ponding has been widely utilized for ranking or qualifying different reinforcement types and concrete mix designs and for projecting service performance. However, experimental issues such as inadequate bar end isolation, ponding bath leakage, and inappropriate specimen design and testing methodology can result in data that misrepresents long-term service performance. Further, the fact that most testing protocols employ cyclic chloride solution ponding can lead to erroneous ranking of different corrosion resistant

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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.

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Звіти організацій з теми "Concrete slab Design"

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

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

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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, th

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Lippert, David, Marshall Thompson, and Charles Wienrank. Performance of Interstate Rubblization in Illinois. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-005.

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In Illinois, hot-mix asphalt overlaid concrete pavements typically exhibit reflective cracking of joints and cracks from the pavement below, resulting in shortened life and maintenance issues. Over the years, various patching, fabric, and crack and seat techniques were attempted with few positive results. This led to more aggressive techniques to eliminate the slab action of the concrete pavement where the pavement would be broken or rubblized into pieces typically less than 12 inches. Since the first rubblizing project in 1990, policy, procedures, and specifications have evolved to the point

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Hartell, Julie, Matthew O’Reilly, and Hang Zeng. Measuring Transport Properties of Portland Cement Concrete Using Electrical Resistivity. Illinois Center for Transportation, 2023. http://dx.doi.org/10.36501/0197-9191/23-012.

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Although classification tables based on susceptibility to chloride ion permeability are recommended in AASHTO T 358, the classification levels with respect to durability parameters may or may not be adequate. Of interest for concrete pavement performance, this study verifies the recommended classification levels against standard durability testing such as corrosion, salt scaling, and freeze-thaw. The researchers conducted corrosion, salt scaling, and freeze-thaw durability tests in parallel with electrical surface resistivity testing to compare performance classifications for each method. Twen

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Bond, Robert Bailey. Design of steel headed stud anchors in concrete-filled steel composite deck. Northeastern University, 2022. http://dx.doi.org/10.17760/d20473849.

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This paper reports common failure mechanisms of steel headed stud anchors (shear studs) in concrete-filled steel composite decks found in the literature comprised through an extensive database of push-out tests representing multiple shear stud configurations used in composite construction around the world. Monotonically and cyclically loaded push-out test specimens perpendicular or parallel steel deck, or in solid slabs, are included in the evaluation. Comparisons to experimental strengths are made with the steel headed stud anchor strength prediction methods from various international Codes a

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Lomboy, Gilson, Douglas Cleary, Seth Wagner, et al. Long-term performance of sustainable pavements using ternary blended concrete with recycled aggregates. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40780.

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Dwindling supplies of natural concrete aggregates, the cost of landfilling construction waste, and interest in sustainable design have increased the demand for recycled concrete aggregates (RCA) in new portland cement concrete mixtures. RCA repurposes waste material to provide useful ingredients for new construction applications. However, RCA can reduce the performance of the concrete. This study investigated the effectiveness of ternary blended binders, mixtures containing portland cement and two different supplementary cementitious materials, at mitigating performance losses of concrete mixt

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Tibbetts, Caitlin, Jesse Doyle, W. Robinson, Ester Tseng, Joseph Bonelli, and Robert Turner. Full-scale evaluation of saltwater concrete for airfield pavement construction and repair. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/49431.

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The US Navy has a need to rapidly construct concrete facilities onshore to support contingency operations. Mixing water for concrete is typically specified to be freshwater; however, in many scenarios there are limited amounts of freshwater available for construction. Thus, use of readily available saltwater would be advantageous. This project’s objective was to evaluate the suitability of saltwater as a replacement for freshwater for producing concrete airfield pavement under relevant operational scenarios. Three full-scale test sections were constructed, and performance was evaluated in the

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Gungor, Osman, Imad Al-Qadi, and Navneet Garg. Pavement Data Analytics for Collected Sensor Data. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-034.

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The Federal Aviation Administration instrumented four concrete slabs of a taxiway at the John F. Kennedy International Airport to collect pavement responses under aircraft and environmental loading. The study started with developing preprocessing scripts to organize, structure, and clean the collected data. As a result of the preprocessing step, the data became easier and more intuitive for pavement engineers and researchers to transform and process. After the data were cleaned and organized, they were used to develop two prediction models. The first prediction model employs a Bayesian calibra

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Briggs, Nicholas E., Robert Bailey Bond, and Jerome F. Hajjar. Cyclic Behavior of Steel Headed Stud Anchors in Concrete-filled Steel Deck Diaphragms through Push-out Tests. Northeastern University. Department of Civil and Environmental Engineering., 2023. http://dx.doi.org/10.17760/d20476962.

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Earthquake disasters in the United States account for $6.1 billion of economic losses each year, much of which is directly linked to infrastructure damage. These natural disasters are unpredictable and represent one of the most difficult design problems in regard to constructing resilient infrastructure. Structural floor and roof diaphragms act as the horizontal portion of the lateral force resisting system (LFRS), distributing the seismically derived inertial loads out from the heavy concrete slabs to the vertical LFRS. Composite concrete-filled steel deck floor and roof diaphragms are ubiqui

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Briggs, Nicholas E., and Jerome F. Hajjar. Cyclic Seismic Behavior of Concrete-filled Steel Deck Diaphragms. Department of Civil and Environmental Engineering, Northeastern University, 2023. http://dx.doi.org/10.17760/d20593269.

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Earthquake disasters in the United States account for $6.1 billion of economic losses each year, much of which is directly linked to infrastructure damage. These natural disasters are unpredictable and represent one of the most difficult design problems regarding constructing resilient infrastructure. Structural floor and roof diaphragms act as the horizontal portion of the lateral force resisting system (LFRS), distributing the seismically derived inertial loads out from the heavy concrete slabs to the vertical LFRS. Concrete-filled steel deck diaphragms are ubiquitously used in steel constru

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