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采用后张法预应力结构,在钢筋张拉锚固后,需进行孔道压力灌浆。这一工艺过程往往未被人们给以足够的注意。最近结合研究预应力灌浆自锚工艺,对灌浆所用浆体的性能要求、膨胀剂的选用、膨胀量的确定和试验方法等,进行了一些学习和探讨。现将有关资料及本人粗浅认识整理成本文,供同行参考,并希得到批评指正。
After the post-tensioned prestressed structure is used, after the tension and anchorage of the steel bar, the pressure of the channel is required to be grouted. This process is often not given enough attention by people. Recently, the prestressed grouting self-anchor technology was combined to study the performance requirements of the slurry used for grouting, the selection of expansion agent, the determination of the expansion volume, and the test methods. I now sort out the relevant information and my rough understanding of the cost text for reference by my peers and I have received criticism and correction.