Indian Journal of Science and Technology

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The main objective of this study is to investigate the behaviour of partially prestressed concrete (PPC) beams subjected to pure flexure. The test beams were produced using both high performance concrete (HPC) and traditional concrete (TC). Test beams were compared with each other for strength, strain and cracking cases. The comparison was done by theoretical and experimental methods. Test measurements included failure loads, deflections, strains in concrete and steels, failure moments and service moments, experimental safety coefficients, number of cracks, crack widths, curvatures. Thus, optimum partially prestress ratio was determined for HPC and TC. Advantages of using HPC in partially prestressed beams were brought out. According to the results of the study, optimum partially prestress ratio for PPC beams produced using traditional concrete is ~60%; while it is ~70% when HPC is used. The test results are shown that the usage of HPC in PPC beams is more convenient than the TC under some boundaries and conditions.

Keywords

Beams, High Performance Concrete, Partially Prestressed Ratio
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