新型速凝橡胶沥青防水涂层厚度的演变研究

Evolution of New Waterproof Coating Thickness of Accelerated Rubber Asphalt

速凝橡胶沥青防水涂料是一种新型材料,无论从理论上还是从实践上,其防水可靠性与厚度有着明显的关系,厚度越大,防水效果越好。但当前涂层厚度的设计、施工、验收等缺乏统一的标准,研究也不充分,造成这种材料的理论设计与实际使用有一定的差异。经对不同涂层厚度在不同温度下发展演变的研究,发现了涂层厚度随时间的演变存在一定的规律,即在半小时左右凝结后,还有一周左右的变薄过程,然后才趋于稳定,设计、验收时应给予考虑。而且不同的环境温度对涂层凝结固化有不同的影响,温度越高,固化越快,但当温度低于4℃后,固化过程不稳定,说明低温对其质量会产生一定的影响,施工、验收时应考虑这一因素。

Accelerated rubber asphalt waterproofing coating is a new material,whether in theory or in practice,its waterproofing reliability has an obvious relationship with its thickness,the greater the thickness,the better the waterproofing effect. But at present,there is no uniform standard for the design,construction and acceptance of coating thickness,and the research is insufficient,which makes the theoretical design and practical use of this material have some differences. Through the research on the development and evolution of different coating thickness at different temperatures,it is found that there is a certain regularity in the evolution of coating thickness with time,that is,after half an hour or so of condensation,there is a week or so of thinning process,and then it tends to be stable,which should be considered in design and acceptance. The higher the temperature is,the faster the curing is. But when the temperature is below 4 degrees Celsius,the curing process is unstable,which indicates that low temperature will have a certain impact on the quality of coatings. This factor should be taken into account in construction and acceptance.