Anti-cracking powder for concrete surface

The invention discloses an anti-cracking powder for concrete surface. The anti-cracking powder comprises Portland cement, aluminum hydroxide, methyl cellulose, redispersible rubber powder, and a water reducer. The provided anti-cracking powder has the advantages of low cost, simple preparation, and convenience for construction. The anti-cracking powder can be directly sprayed on the surface of concrete or mortar before final set, can effectively fix water of concrete or mortar, and is also capable of increasing the surface strength of concrete or mortar. 本发明公开了种混凝土表面用抗裂粉，抗裂粉包括硅酸盐水泥、氢氧化铝、甲基纤维素、再分散胶粉、减水剂。本发明有益效果：本发明记载的抗裂粉成本低廉、制备简单、施工方便，可直接喷洒在终凝前的混凝土或砂浆表面，可有效固定混凝土或砂浆的水分，还可以提高混凝土或砂浆的表面强度。