1、后张法预留孔道灌浆材料性能的研究 I 后张法预留孔道灌浆材料性能的研究后张法预留孔道灌浆材料性能的研究 摘要摘要 在试验基础上，归纳了水泥基灌浆材料的共性，总结了水泥基干粉灌浆砂浆的各 主要组分，包括胶凝材料、骨料、减水剂、和膨胀剂，对其性能，包括流动性、凝结 时间、力学性能和膨胀性的影响规律。为水泥基灌浆材料的研发和生产提供了参考资 料。后张法预应力灌浆充实孔道的作用是保护预应力钢筋及提高整体结构的承载力。 因材料、施工原因及灌浆材料泌水蒸发后，而在浆体凝固时产生一些孔隙。因此减少 这些孔隙是预应力灌浆的关键。介绍后张预应力孔道灌浆中高性能水泥浆体的配制， 并通过相关试验，对灌浆浆体的配比与
2、性能进行了研究。 关键词：水泥基灌浆料：干粉砂浆；新拌及硬化性能；主要组份。 II Abstract Based on the tests the major performances of cementitious grout，for instance ，fluid ability, setting time,strength and vertical expansion rate are summarized.Then the effects of so me main components such as cementing material,fine aggregate,water r
3、educers,defoamer and ex pansive agent on the performance were discussed.That will provide the references for developing and manufacturing of eementitious grout materials Mi Shui evaporates the queen because of material，the cause being under construction and injection material， produce but a few smal
4、l openings during the period of the thick fluid body solid ifies.Cutting down these small openings therefore is prestressing force injectio n keyThe making up of high-performance cement paste in post tensioned prestressed duct grouting is pres eated.Through relevant test，the mixing ratio and performance of the grouting materials are studied Keywords： Cementitious grout:Dry powder mortar； Fresh and ha rdened performance； Main comp onents. 后张法预留孔道灌浆材料性能的研究 III 目 录录 摘要 I 第一章 前言 - 1 - 1.
