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Showing 1 to 20 of 44 for “"Plain Concrete"”.
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Behavior of plain concrete under cyclic compressive loading
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1980.
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Calibrated mechanistic design procedure for jointed plain concrete pavements
… procedure for the structural design of jointed plain concrete pavements is developed. The research approach followed in the development of the design procedure is distress prevention oriented. The design process involves the determination of pavement characteristics that minimize the development …
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Stress intensity values for prenotched and precracked, plain concrete beams
Typescript (photocopy).
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Evaluation of jointed plain concrete pavement (JPCP) with FRP dowels
… to HS-25 load and 1.5 times HS-25 load on concrete slabs (11&inches; and 12&inches; depth) with 1.5&inches; and 1.0&inches; steel and FRP dowels at different spacings (12&inches;, 6&inches;).;Theoretical calculations are provided through different examples for JPCP with FRP and steel dowels …
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Design, fabrication, and testing of plain concrete beams using topology optimization
… However, this tendency suggests that concrete could be an excellent building material for topology-optimized civil structures, since its initial liquid phase makes it highly formable, and it's low cost and high strength make it a ubiquitous construction material. Materially-specific …
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Field observations of the early-age behavior of jointed plain concrete pavements
… of newly constructed slab sections examining concrete temperature behaviors by slab depth and location, joint-crack developments by location, width and growth during the first 72 hours from initial placement. Re-evaluation of the Phase I theoretical pavement analysis and early-age concrete …
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Development of Mechanistic-Empirical Principles for Jointed Plain Concrete Pavement Fatigue Design
In an attempt to better understand and predict concrete pavement behavior, the incorporation of material and climatic factors in mechanistic-empirical design methods is fast becoming a necessity. With the wide range of climatic regions in the United States, the inclusion of localized factors can …
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Strength and Deformation Characteristics of Plain Concrete Subjected to High Repeated and Sustained Loads
Made available in DSpace on 2014-12-10T22:21:34Z (GMT). No. of bitstreams: 1 7121073.pdf: 8707350 bytes, checksum: 974aa0db9be94cc3cabdfdac44a71ad2 (MD5) Previous issue date: 1971
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New Field Testing Procedure For Measuring Residual Stress in Plain Concrete Pavements and Structures
… as steel, no similar testing method exists for concrete. Recent research conducted by the Federal Aviation Administration's (FAA’s) National Airport Pavement Test Facility (NAPTF) investigated the strain relaxation of cantilevered concrete beams when a blind-depth hole using core drilling is …
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Simulation of High-velocity Penetration for Rigid Projectile into Plain Concrete Target using Discrete Element Method
… the Discrete Element Method (DEM) simulation of plain concrete target's behavior under high-velocity penetration of rigid projectile. In this thesis, different types of research works including empirical, analytical and numerical methods in penetration by the previous scholars were carefully …
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The effects of various levels of compressive stress fields on the deterioration rate and microcracking of plain concrete subjected to freezing and thawing
… and mortar cracks are assumed to exist in the concrete. These cracks increase for increasing stress levels. 5. For the prestressed direction of any uniaxially prestressed member, there was a certain prestress level for which the change in length due to internal freeze-thaw damage equaled the …
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Early Age Stresses and Creep-Shrinkage Interaction of Restrained Concrete
… as a major mechanism of drying creep for plain and fiber reinforced concrete (FRC). Microcracking forms a significant portion of drying creep of plain concrete, but it is less significant in FRC. Therefore, creep of FRC is dominated by real mechanisms, whereas apparent mechanisms induced …
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Ultimate Strength of the Local Zone in Load Transfer Tests
… of the ultimate bearing strength of plain and reinforced concrete blocks, concentrically loaded. A total of 199 bearing tests were performed on plain and reinforced concrete prisms to evaluate the variables involved in the bearing problem. A finite element analysis of a typical square …
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Evaluation of In-Situ variability of concrete pavement characteristics and their effect on performance
… loading, etc. Past research identified that concrete thickness and flexural strength were two pavement characteristics that significantly affected transverse cracking in Jointed Plain Concrete Pavements (JPCP). This dissertation concentrated on quantifying the effect of concrete thickness …
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Prediction of service load of concrete structures after cracking using ultrasonic technique
… investigate the cracking behavior of fractured concrete structures and to introduce a new approach to assess their remaining service lives. A novel ultrasonic technique is utilized to detect crack propagation in notched beams of mortar, plain concrete and reinforced concrete. The study showed …
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A knowledge base for rehabilitation of airfield concrete pavements
… and designers to solve difficult jointed plain concrete pavement (JPCP) design problems. This expert system focuses on aircraft safety and pavement structural capacity which are key issues for all pavement design participants. During the validation tests, AIRPACS recommendations were …
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Evaluation of climate data sources and investigation of performance prediction models for mechanistic-empirical pavement designs
… prediction, a tool to design short jointed plain concrete pavement (SJPCP) over asphalt concrete (AC), and major bugs were resolved to improve computational performance. A comprehensive evaluation of all these new tools was performed and is presented in this study. The results demonstrate …
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Neural network-based material modeling
… neural network-based constitutive models of plain concrete in biaxial stress states and in uniaxial cyclic compression. A composite material model simulating the stress-strain behavior of reinforced concrete as a generic composite material in a biaxial stress state is built with experimental …
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