摘要
针对渗透结晶型混凝土裂缝自愈合评价需求,制备了空白混凝土和自愈合混凝土,分别采用裂缝宽度观测法、相对强度恢复法和抗渗恢复法对两种混凝土自愈合效果进行了评价研究。结果表明,采用裂缝宽度观测法评价渗透结晶型裂缝自愈合的适用性较差;相对强度恢复法和抗渗恢复法评价混凝土裂缝自愈合的效果良好;可联合运用相对强度恢复法和抗渗恢复法对混凝土宏观裂缝和微裂缝的自愈合效果进行综合评价。
In order to obtain satisfied assessment methods for the crack self healing property of concrete caused by permeable crystallization,self healing and control concretes were prepared to be tested.Methods such as crack width monitoring,relative strength recovery test and impermeability recovery test were applied to assess the crack self healing effect of the concretes.The results show that it＇s hard to assess the self healing property by crack width monitoring.The assessment effects of relative strength recovery test and impermeability recovery test are satisfied.It is suggested that the two methods can be used to comprehensively assess the self healing properties of macro and micro cracks.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2015年第10期3051-3055,3062,共6页
Bulletin of the Chinese Ceramic Society
基金
交通运输部应用基础研究项目(2013329765250)
关键词
渗透结晶
裂缝
自愈合
评价方法
permeable crystallization
crack
self healing
assessment method
