摘要
探究了微胶囊掺量、试件预破坏程度、侵蚀溶液pH值以及试件养护龄期对试件修复行为的影响.利用抗压强度回复率和损伤变量来评价试件的自修复效果.结果表明:掺入微胶囊后试件的抗压强度回复率得到提高,不同龄期试件的修复效果均随侵蚀溶液pH值的提高而提高.相同情况下,当微胶囊质量分数为2%时,养护28d的试件修复效果较好,而微胶囊质量分数为4%时,养护180d的试件抗压强度回复率较高.
Healing effects of self-healing cementitious material with different microcapsule contents, predamage degrees, pH values of erosion solutions and curing ages were investigated. Healing effect was evaluated by compressive strength restoration rate and damage variable. The results show that compressive strength restoration rate of specimens with microcapsules has increased to some extent. As pH value of erosion solution increases, the self-healing effect is also improved. When microcapsule content（by mass）iis 2%, the specimens cured for 28 d show better healing efficiency, while compressive strength restoration rate of specimens cured for 180 d is higher when microcapsule content（by mass） reaches 4%.
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2016年第6期988-992,共5页
Journal of Building Materials
基金
国家自然科学基金资助项目(51278360
51308407
51478348)
国家科技支撑计划项目(2014BAL03B02)
高等学校博士学科点专项科研基金资助项目(20130072110047)
上海科技部重点项目(14DZ1202302)
中央高校基本科研业务费专项资金资助项目
高性能土木工程材料国家重点实验室开放基金(2014CEM009)
关键词
微胶囊
水泥基材料
侵蚀
自修复
microcapsule
cementitious material
erosion
self-healing
