Concrete waterproof additive

Abstract

The invention relates to the field of concrete additives, in particular to a concrete waterproof additive which comprises the following components by mass: 10-20 parts of benzoate, 5-9 parts of alkyl sodium sulfonate, 3-6 parts of nano silicon dioxide, 2-6 parts of benzoic acid thedin, 6-8 parts of hydroxymethyl cellulose, 2-6 parts of aluminum potassium sulfate dodecahydrate and 2-5 parts of phosphoric acid. After the waterproof additive provided by the invention is mixed with a dissolved concrete emulsion, the concrete is excellent in continuous filming property, active groups in polymer molecules can have cross-linking reaction with Ca and Al in a concrete hydration product, a special bridged linkage function can be achieved, the physical texture structure of a hardened concrete mortar body can be improved, internal stress can be relieved, micro cracks can be reduced, the density of a polymer waterproof coating can be improved, and relatively good density can be achieved; the concrete waterproof additive contains non-toxic and harmless component, is free of pollution and is an environment-friendly additive.

Description

technical field [0001] The invention relates to the field of concrete additives, in particular to a concrete waterproof additive. Background technique [0002] In recent years, leakage between toilets, baths and kitchens has become the biggest common quality problem in residential buildings. Leakage between toilets, baths, and kitchens causes water leakage and dripping on the floor and walls, and large areas of damp, damp, mold, and pulverization appear on the walls and ceilings, which seriously affects the normal use of the house and cannot be repaired for a long time , causing a lot of trouble to the residents, and the number of complaints for repairs has soared. Through many case studies, the main reasons are design factors, material factors and construction factors. Among them, the occurrence rate of leakage caused by material factors is the highest. For example, in weak links such as pipelines, floor drains, and toilet pits, sealing materials are not used for caulkin...

AI Technical Summary

Problems solved by technology

For example, in weak links such as pipelines, floor drains, and toilet pits, sealing materials are not used for caulking, or suitable materials are not used to match the construction technology, and non-corrosion and mildew-proof materials are used, which can easily cause leakage.

For a long time, asphalt, linoleum and organic materials have been the main waterproof materials. Some materials are poisonous and odorous, difficult to operate and not resistant to aging.

For this reason, several kinds of rigid waterproof coatings have been introduced successively in China, but the cost is relatively high.