碳纤维增强混凝土裂纹的钝化试验研究  

The experimental research on the blunting about cracking in carbon fibre reinforced concrete

作　　者：张华[1] 李卓球[1] 宋显辉[1] 

机构地区：[1]武汉理工大学工程结构与力学系,湖北武汉430070

出　　处：《混凝土》2003年第5期22-24,共3页Concrete

摘　　要：　本文利用电沉积技术对碳纤维增强混凝土的裂纹尖端实施钝化;在电流作用下溶液中的离子发生定向运动,沉积物沉淀在裂纹和裂纹尖端,使得裂纹尖端的曲率半径增大,最后达到阻止裂纹的进一步扩展甚至将其修复的目的。试验表明利用电沉积技术对碳纤维混凝土实行裂纹尖端钝化是一种行之有效的方法。Electrodeposition technology is applied to make crack tip blunt;Precipitation will be deposited in crack and crack tip when current is applied to the MgSO4 solution,which makes the curvature radisus of crack tip increase,prevent the crack from further extending and even attain the purpose of rehabilitating crack.Final results of experiment indicate that applying electrodeposition technology is an effective method of blunting crack tip and healing crack.

关 键 词：机敏混凝土 碳纤维 裂纹 钝化 

分 类 号：TU528.572[建筑科学—建筑技术科学]