真空压浆技术在后张预应力梁中的应用

Application of Vacuum Grouting Technique in Beam Prestressed by Post-Tensioning Method

在沈阳巨流河大桥施工中,对后张法预应力管道压浆采用新型的真空压浆工艺。该工艺克服了普通压浆的一些缺陷,增加了浆体的强度和致密性,减少了对钢绞线的锈蚀,取得了很好的效果。

In the Construction of bridge over Shengyang Juliu River, the grouting in conduit prestressed by post - tensioning method has adopted a new type of vacuum grouting technology. Present technology overcome some defects existing at the time when grouting was made by average method, added the strength and compactness of paste, reduced the erosion of strand and achieved a good effects.