后张法有粘结预应力混凝土灌浆用膨胀剂的试验研究

通过对后张法有粘结预应力混凝土灌浆料中掺入不同外加剂和同种外加剂不同掺量的比较，分析JL-5号复合膨胀荆不同掺量对灌浆料的马氏流动时间、凝结时间、泌水率、抗压强度、钢筋握裹力、体积变化的影响，提出在预应力混凝土灌浆料中掺入适量的JL-5号复合膨胀剂，对提高灌浆料的力学性能及灌浆料与预应力混凝土的粘结性具有重要意义。

Experimental Investigation on Expansion Agents for Grouting of Bonded Post-tensioned Prestressed Concrete

By comparison between different expansion agents and same expansion agent with different proportions mixed into bonded post-tensioned prestressed concrete grout,this paper analyzes influences of different contents of JL-5 compound expansion agent on Maddox flowing time,coagulation time,bleeding rate,compressive strength,bonding force of reinforcing steel bars and variation of volume,and puts forward that the mixture of proper JL-5 compound expansion agent into the prestressed concrete grout is of vital sign...