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防水屋面材料
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硅烷防水材料的研制及其在混凝土防护中的应用工艺探究

作者：裴须强1，2，3，朱玉雪1，2，3

关键字：硅烷,防水材料,的,研制,及其,在,混凝土,防护,

　
（1.中国建筑材料科学研究总院有限公司，北京  100024；2.中建材中岩科技有限公司，北京  100024；
3.全国建筑材料行业防护修复与加固材料工程技术中心，北京  100024）
    摘要：基于硅烷优异的防水效果，通过化合物组合技术制备3种硅烷防水材料；由挥发率、渗透深度及接触角测试选出最佳的硅烷防水材料；从不同混凝土结构、防水材料用量及涂覆工艺出发，探究应用工艺对硅烷防水材料防护性能的影响。结果显示：m（链烷基硅烷）∶m（硅氧烷低聚物）∶m（硅烷偶联剂）=6∶3∶1时，防水材料综合性能最佳，25 ℃下材料挥发率为2.8%、渗透深度（C40混凝土）为5.8 mm、表面接触角为135°；同时，混凝土结构对防水材料的防护性能有所影响，施工时最佳涂覆用量为300 g/m2；相比喷涂、滚涂，刷涂的防护效果更好，但考虑到大面积施工需求，普遍优选喷涂工艺。
    关键词：硅烷；防水；应用工艺；防护性能
    中图分类号TU56+1.65        文献标识码：A        文章编号：1001-702X（2022）07-0067-05
　　
Preparation of silane waterproof material and its application technology in concrete protection
PEI Xuqiang1，2，3，ZHU Yuxue1，2，3
（1.China Building Materials Academy，Beijing 100024，China；
2.CNBM Zhongyan Technology Co. Ltd.，Beijing 100024，China；
3.National Building Materials Engineering Technology Center for Protective Repair and Reinforcement，Beijing 100024，China）
    Abstract：Based on the excellent waterproof effect of silane，three kinds of silane waterproof materials were prepared by compound combination technology，the best silane waterproof material was selected through the test of volatilization rate，penetration depth and contact angle；from different concrete structures，dosage of waterproof materials and coating technology，the influence of application technology on the protective performance of silane waterproof materials is explored. The results show that when alkane silane∶siloxane oligomer∶silane coupling agent=6∶3∶1，the comprehensive performance of waterproof material is the best，the volatilization rate of material is 2.8%，the penetration depth（C40 concrete） is 5.8 mm and the surface contact angle is 135°. The concrete structure has an impact on the protective performance of waterproof materials，and the best coating dosage is 300 g/m2 during construction. Compared with spraying and roller coating，brush coating has better protection effect，but considering the needs of large-area construction，the spraying process is generally preferred.
    Key words：silane，waterproof，application process，protective performance