为了改善钢模板浇灌的混凝土表面光洁而不易装饰粘结的问题,上海市建筑科研所,研制成SRⅡ型混凝土表面缓凝剂,经刷涂在钢模板面层上,能有效地延缓浇灌的混凝土表面水泥的水化和凝结,三天内拆模的混凝土构件表面经刷除即可获得粗糙 In order to improve the smoothness of the concrete surface watered by the steel formwork and not easy to decorate and bond, the Shanghai Institute of Construction Science and Technology developed the SRII concrete retarder on the surface of the steel template, which can effectively delay the concrete poured. The hydration and condensation of the surface cement, the surface of the concrete member removed from the mold within three days can get rough after brushing