Waterproof additive for cement and use method thereof

Abstract

The invention discloses a waterproof additive for cement and a use method thereof. The waterproof additive for the cement is prepared from the following components in parts by mass: 18 to 32 parts ofcalcium lignosulphonate, 3 to 7 parts of FDN water reducing agent, 15 to 18 parts of stearic acid, 25 to 28 parts of fly ash, 1 to 3 parts of lime, 8 to 12 parts of calcium sulfate, 8 to 10 parts of aluminum sulfate, 2 to 4 parts of polyethylene amine, 1 to 4 parts of hydroxy carboxylate, and 1 to 2 parts of sodium fluosilicate. The waterproof additive has the advantages that the anti-seepage andanti-water leakage properties are strong, the surfaces and interiors of the cement walls or floors can be oiled, and the waterproof, anti-seepage and anti-leakage functions of the cement are obviouslyimproved; the cost is low, the construction is convenient, and the waterproof additive can be widely applied to the moisture-proof and waterproof projects of roofs, kitchens, bathrooms, basements, outdoor walls, water storage tanks, tunnels, culverts and the like of industrial and civil buildings; the anti-aging property is good, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a waterproof additive for cement and a use method thereof. Background technique [0002] At present, cement, as a basic building material, is widely used, and its main uses include masonry, painting, pasting tiles, making cement bricks, cement concrete, and cement products. In the prior art, the waterproof function of cement is enhanced by adding external additives to cement, such as the combination of glue products and cement to solve the waterproof problem, and once the waterproof layer reaches a certain limit after the use time, it will be destroyed due to thermal expansion and contraction , this function cannot repair it, and an irreparable defect occurs. In today's buildings, where cement is used, water leakage can be found at any time, and mold spots or peeling off will appear on the outer wall due to water leakage, and seepage will occur on the cement wall besi...

AI Technical Summary

Problems solved by technology

In the prior art, the waterproof function of cement is enhanced by adding external additives to cement, such as the combination of glue products and cement to solve the waterproof problem, and once the waterproof layer reaches a certain limit after the use time, it will be destroyed due to thermal expansion and contraction , this function cannot repair it, an irreparable defect occurs

In today's buildings, where cement is used, water leakage can be found at any time, and mold spots or peeling off will appear on the outer wall due to water leakage, and seepage will occur on the cement wall beside the indoor window frame. Water leakage, water will also seep from the mud surface to the residents on the next floor and affect their lives. Water seepage on the bathroom wall will bring moisture and mildew to the wardrobe, floor boards, floors, etc. of the family, which has seriously affected people's living safety

The performance of cement itself has poor durability; the thermal expansion and contraction coefficient is large, and it is easy to crack and decompose; the high temperature resistance is poor, and it is easy to burst; the water resistance is poor;