Flexural Behavior of High Performance Concrete Beam Mixed With High Volume Pozzolanic Material under Cyclic Load

• Main Author: 李梁伯修
• Other Authors: 張明添
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/27771872876521625732

碩士 === 國立中興大學 === 土木工程學系 === 87 === This research will discuss the flexural behavior of high-performance concrete beam mixed with high volume Pozzolanic material . We manufactured 12 RC beams with variable admixtures for concrete﹑the spacing of ties﹑shear span to depth ratio and tension and compression steel content in the test. Cyclic load applied on the beams for purpose to compared with the theory analytical with ACI to make understand the deterioration in strength and stiffness and the energy dissipation capacity of RC beams with high volume Pozzolanic material. It had also compared the result with the influence of changing spacing of shear reinforcement, shear span to depth ratio and content of steel, in differential admixtures for concrete. The results show that both Fly-ash concrete and Slag concrete can take higher strength than ACI theory. Fly-ash concrete has lower strength and stiffness and faster deterioration in strength and stiffness. By increase compression-tension steel ratio and shear span to depth ratio and decrease spacing of shear reinforcement, we can get better ductility and slower deterioration in strength and stiffness. An increase in span to depth ratio has the most influential in pure Portland concrete and the smallest influential in Fly-ash concrete. A decrease in spacing of shear reinforcement and compression to tension steel ratio has the most influential in Slag concrete and the smallest influential in Fly-ash concrete.