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首次尝试采用CT扫描技术定量分析丙烯酸盐喷膜防水材料在地下水环境中的失效性.CT试验最终表明,采用CT扫描的试验方法是可行的,达到了定量分析的试验目的.该试验方法省去了常规试验繁琐操作流程,具有快捷、准确的优点.试验主要得出以下结论:(1)判定喷膜防水层在地下水环境中失效的判定标准有2个,一是喷膜防水层的CT数折减百分比小于40.0%,二是CT数方差变化规律为先减后增,当二者同时满足时可以判定材料内部结构发生本质变化,认定喷膜防水层失效;(2)喷膜防水层在地下水环境中的使用范围是浓度≤1.0%,Cl?浓度≤7.5%,pH≤12.0.2So4?
The first attempt to use CT scanning technique to quantitatively analyze the failure of acrylate sprayed waterproof material in the groundwater environment.CT test finally showed that using CT scanning test method is feasible and achieve the purpose of quantitative analysis of the test method. The routine test cumbersome operation process, with fast and accurate advantages.The main conclusions of the experiment are as follows: (1) to determine the spray film waterproof layer failure in the groundwater environment, there are two criteria to determine the failure of the first spray-film waterproof CT The reduction percentage is less than 40.0%; second, the law of variation of CT number is first reduced and then increased; when the two are satisfied at the same time, the internal structure of the material can be determined to have an essential change and the waterproof layer of the sprayed film is invalidated; The use of groundwater environment is the concentration of ≤ 1.0%, Cl? Concentration ≤ 7.5%, pH ≤ 12.0.2So4?