水泥基渗透结晶防水材料在钢筋混凝土管片中的应用研究  

Study on the Application of Cementitious Capillary Crystalline Waterproofing Materials in Reinforced Concrete Segments

作　　者：邓志伟 Deng Zhiwei(Fujian Zhengchuan Engineering Technology Co.Ltd.,Ningde,Fujian 352000)

机构地区：[1]福建省正川工程技术有限公司,福建宁德352000

出　　处：《江西建材》2023年第12期53-55,共3页Jiangxi Building Materials

摘　　要：为提高轨道交通工程盾构管片混凝土的抗氯离子渗透性能,文中研究了不同掺量水泥渗透结晶防水剂对混凝土抗氯离子渗透性能的影响,对比内掺水泥基渗透型结晶防水剂、外涂水泥基渗透型结晶防水涂料、浸渍防腐阻锈剂提高混凝土抗氯离子渗透性能的差异。结果表明,混凝土中掺入适量的水泥基渗透结晶防水剂可以显著提高抗氯离子渗透性能,该性能随着水泥基渗透结晶防水剂掺量的增加而提高,当掺量增大到2.0%后,混凝土的抗氯离子渗透性能开始下降,1.5%掺量对混凝土抗氯离子渗透性能的提升效果最佳。比较提升混凝土抗氯离子渗透性能的效果,浸渍防腐阻锈剂最优,外涂水泥基渗透结晶防水涂料次之,内掺水泥基渗透结晶防水剂虽有提升,但效果不及前两者。In order to improve the chloride ion penetration resistance of shield tunnel segment concrete in rail transit engineering,this paper studied the effect of dfferent dosages of cement permeable crystalline waterprofing agents on the chloride ion penetration resistance of concrete.The differences in improving the chloride ion penetration resistance of concrete by adding cement-based permeable crystalline waterproofing agents internally,applying cement-based permeable crystalline waterproofing coatings externally,and impregnating anti-corrosion and rust inhibitors were compared.The results show that adding an appropriate amount of cement-based penetrating crystalline waterproofing agent to concrete can significantly improve its resistance to chloride ion penetration.This performance improves with the increase of cement-based penetrating crystalline waterproofing agent dosage.When the dosage increases to 2.0%,the resistance to chloride ion penetration of concrete begins to decline,and the best effect of improving the resistance to chloride ion penetration of concrete is achieved with a 1.5%dosage.Comparing the effects of improving the chloride ion penetration resistance of concrete,impregnation with anti-corrosion and rust inhibitor is the best,followed by external application of cement-based permeable crystalline waterproof coating,and internal addition of cement-based permeable crystalline waterproof agent.Although there is an improvement,the effect is not as good as the first two.

关 键 词：钢筋混凝土管片 水泥基渗透结晶材料 抗氯离子渗透性能 电通量 氯离子扩散系数 

分 类 号：TU528[建筑科学—建筑技术科学]