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模板的工作表面在浇注混凝土之前,应加以清理,并喷涂脱模剂,以防已硬化的混凝土与模板壁面粘结。脱模剂应满足下列要求: (1)能在模板表面造成一层整体的不被水润湿的隔离薄膜,也即具有很大程度的憎水性; (2)在水中的溶解度尽可能小,不会与混凝土混合料相混和,不会渗入混凝土制品(如墙、柱、梁、楼板等)的表层,且不会在表面留下油斑;
The working surface of the formwork should be cleaned and sprayed with a release agent before pouring the concrete to prevent the hardened concrete from adhering to the formwork wall. The release agent should meet the following requirements: (1) It can create a layer of integral water-insoluble barrier film on the surface of the template, ie it has a large degree of hydrophobicity; (2) The solubility in water is as small as possible. It will not mix with the concrete mixture and will not penetrate the surface of concrete products (such as walls, columns, beams, floors, etc.), and will not leave oil spots on the surface;