水利学报2012，Vol.43Issue(5)：609-614,6.
预应力孔道灌浆密实性及防治泌水方法的试验研究
Experimental study on grouting compactness of prestressed duct and technology to deal with the grout bleeding
摘要
Abstract
In the construction of post-tensioned prestressed concrete projects, the bleed water of grout in ducts seriously affects the durability of prestressed system. Combination with different grouting techniques, grouting compactness experiments of prestressed duct with kinds of grout materials produced by domestic manufacturers were carried out. The results show that there are bleed water in all kinds of grout materials and the ducts cannot be completely filled with grout. Grouting quality of vacuum-aided grouting technique is better than that of ordinary grouting technique, but it still cannot effectively solve the problem of grout bleeding. Based on the grout compacting device with independent intellectual property, the grouting compact- ness experiment of bellows with narrow pass was carried out, and the result proved successful. This kind of bellow can effectively deal with the grout bleeding, and reach the purpose of possessing well bond strength between grout and prestressed tendon and protecting the prestressed tendon from corrosion.关键词
预应力孔道灌浆/密实性/泌水/带垭口波纹管/灌浆料/灌浆工艺Key words
prestressed duct grouting/compactibility/bleeding/bellows with narrow pass/grout material/grouting technique分类
建筑与水利引用本文复制引用
朱尔玉,王冰伟,周勇政,李学民..预应力孔道灌浆密实性及防治泌水方法的试验研究[J].水利学报,2012,43(5):609-614,6.基金项目
国家自然科学基金资助项目 （）
高等学校博士学科点专项科研基金资助课题 （）
中央高校基本科研业务费专项资金资助课题 （）
