掺粉煤灰再生混凝土疲劳性能试验研究  

Fatigue performance of recycling concrete with fly ash

作　　者：季天剑[1,2] 肖鹏[3] 高玉峰[2] 

机构地区：[1]南京航空航天大学土木工程系,江苏南京210016 [2]河海大学岩土工程科学研究所,江苏南京210098 [3]扬州大学建筑科学与工程学院,江苏扬州225009

出　　处：《河海大学学报（自然科学版）》2010年第3期274-277,共4页Journal of Hohai University(Natural Sciences)

摘　　要：在室内进行了粉煤灰再生混凝土小梁的弯曲疲劳试验,采用威布尔模型,得到了粉煤灰再生混凝土的疲劳方程,并与普通水泥混凝土以及粉煤灰贫混凝土的疲劳方程做了比较.结果表明,粉煤灰再生混凝土的疲劳性能与普通水泥混凝土相似,特别是在应力水平较低部分基本一致,粉煤灰再生混凝土能够承受行车荷载的重复作用.Flexural fatigue tests on beams of recycling concrete with fly ash were performed in the laboratory. A fatigue equation for the probability of failure of the recycling concrete with fly ash was derived according to the Weibull probability distribution. The fatigue equation was compared with one for Portland cement concrete and one for lean concrete with fly ash. The results show that the flexural fatigue performance of the recycling concrete with flay ash is similar to that of Portland cement concrete,especially at low stress. Recycling concrete with fly ash can satisfy the needs of repeated vehicle loads.

关 键 词：再生混凝土 粉煤灰 疲劳强度 

分 类 号：TU502.6[建筑科学—建筑技术科学] TU528.0