文献类型：会议论文

英文题名：Experimental Study on Flexural Behavior of Recycled Coarse Aggregate Concrete Beam

作者：Bai, Wenhui[1];Sun, Binxiang[1]

机构：[1]Shaoxing Univ, Dept Civil Engn, Shaoxing 31200, Peoples R China

会议论文集：International Conference on Applied Mechnics and Mechanical Engineering

会议日期：SEP 08-09, 2010

会议地点：Changsha, PEOPLES R CHINA

语种：英文

外文关键词：recycled concrete; recycled coarse aggregate; beam; flexural behavior; experiment

外文摘要：In order to investigate flexural behavior of simply-supported beam using recycled coarse aggregate concrete, the difference of the component normal section stress distortion performance and failure characteristic between the recycled concrete beam and the normal concrete beam is researched. The approaches of testing the flexural behavior of 6 recycled course aggregate beams with the same section size, different replacement ratio of recycled coarse aggregate (0%, 50%, 70% and 100%) and different percentage reinforcement (0.68%, 0.89% and 1.13%). Based on the experimental the following conclusions are draw. There are also 4 phases of elasticity, cracking, yield and ultimate during the stress course of recycled concrete beam component normal section stress; the average strain measured on cross-section obliges to the plane section assumption; the characteristics of stress distortion and destruction of recycled concrete beam are basically the same as those of the normal concrete beam. Under same conditions, the cracking moment and the ultimate flexural carrying capability of recycled concrete beam is almost the same as those of normal concrete beam. The deformation of recycled concrete beam is larger than concrete beam. The conclusion of the paper is that it is still feasible to calculate the ultimate bending moment, cracking moment, and the biggest crack width of recycled concrete beam according to the formula in China Concrete Structure Design Code, but the deflection formula needs to be adjusted.