摘要
文章对再生混凝土抗压强度、劈裂强度、抗折强度等基本力学指标及这些指标随龄期的变化情况进行了研究,还研究了再生混凝土的峰值应变、弹性摸量及应力-应变曲线。再生混凝土试件中粗骨料替代率均为100%。试验结果表明,各种规范给出的各种力学指标间的换算关系,多数情况下已不适用于再生混凝土;通过回归分析得到了适合再生混凝土各指标间换算的公式。
The basic mechanic indices of recycled aggregate concrete（RAC） such as compressive strength, split strength, flexural strength were investigated and so were the changes of these indices at early age. The peak strain, elastic modulus and stress-strain curve of RAC were also studied In RAC specimens, coarse aggre- gates were replaced by recycled aggregates with a replacement rate of 100%. The results indicated that the conversion formulas for different mechanic indices were not suitable for RAC in most cases. New conversion formulas for RAC were presented by fitting experimental data.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第1期87-90,共4页
Journal of Hefei University of Technology：Natural Science
基金
建设部科技计划资助项目(2007-K2-29)
安徽省自然科学基金资助项目(090414163)
关键词
再生混凝土
力学指标
峰值应变
弹性摸量
recycled aggregate concrete（RAC）
mechanic index
peak strain
elastic modulus
