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一、以往地下工程的防水问题 建国以来,我局在吉林地区修建的地下工程一般均采用普通混凝土并做三毡四油卷材进行防水,或采用B_6、B_8防水混凝土进行防水。但经过历年来的使用,发现凡在地下水位较高的地区修建的地下工程均有不同程度的渗水漏水问题,且很难整治。这是因为: (一) 混凝土内部存在很多毛细孔隙,这种毛细孔隙的产生是在混凝土浇灌时,施工需
First, the waterproofing of underground works in the past Since the founding of the People’s Republic of China, the underground works built by the Bureau in the Jilin area have generally been made of ordinary concrete and made of three felts and four oil sheets for waterproofing, or B_6 and B_8 waterproof concrete for waterproofing. However, after years of use, it has been found that underground works built in areas with high groundwater levels have varying degrees of seepage and water leakage problems and are difficult to rectify. This is because: (a) There are many capillary pores in the concrete. This capillary pore is generated when the concrete is poured.