多孔贫混凝土耐久性能试验研究  

Experiment study on endurance performances of the lean concrete

作　　者：施劲松[1] 耿阳 张卫芳[3] 

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430070 [2]兰州军区空军机场工兵勤务队,陕西西安710077 [3]空军后勤部机场营房部,北京100720

出　　处：《四川建筑科学研究》2015年第5期43-46,50,共5页Sichuan Building Science

摘　　要：通过试验对多孔贫混凝土的耐久性(包括收缩性能、抗冻性能和疲劳性能)进行了研究,建立了多孔贫混凝土的疲劳方程,并与石灰稳定土和水泥稳定碎石进行了对比,研究结果表明,多孔贫混凝土具有良好的收缩性能,可防止贫混凝土基层表面裂缝的产生;多孔贫混凝土的抗冻性能优于二灰碎石和水泥稳定碎石;贫混凝土具有比常用半刚性基层材料更加优良的抗疲劳性能,并提出了贫混凝土的荷载应力疲劳系数。The endurance performances such as shrink,anti-freeze and anti-fatigue of the lean concrete were investigated through experiment. The fatigue-equation of lean concrete was established and the anti-fatigue performance of lean concrete was compared with others. The experiment proves that the lean concrete＇s shrink performance is better than others,as a result it can prevent the emergence of the crack. It also proves that the lean concrete has excellent anti-freeze and anti-fatigue performance. Through fatigue test,the stress fatigue coefficient of lean concrete is advised.

关 键 词：收缩性能 抗冻性能 抗疲劳性能 贫混凝土 

分 类 号：TU528.2[建筑科学—建筑技术科学]