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目前,各地对内外墙的装饰要求越来越高。为了增加饰面与墙面的粘结力,一般采用去除混凝土表面油污后人工凿毛的施工工艺。但是工作效率低、劳动强度大,在质量上还不能保证。如使用粘结剂则成本较高。为了解决这个问题,上海市建筑科研所研制成一种能提高饰面与墙面粘结力,又能提高工作效率,减轻劳动强度的新产品——SR-Ⅱ型混凝土表面缓凝剂。
At present, the demand for interior and exterior wall decoration is getting higher and higher. In order to increase the adhesion between the veneer and the wall surface, a construction process for removing the oil on the concrete surface and artificially cutting the hair is generally adopted. However, the work efficiency is low and the labor intensity is high, and quality cannot be guaranteed. If using adhesives, the cost is higher. In order to solve this problem, Shanghai Institute of Building Research has developed a new type of concrete surface retarder, SR-II concrete, which can improve the adhesion between facing and wall surface, and can also increase work efficiency and reduce labor intensity.