Asphalt-containing waterproof mortar and preparation method

Abstract

The invention discloses asphalt-containing waterproof mortar and a preparation method. The asphalt-containing waterproof mortar comprises the following components in parts by weight: 5-15 parts of anacrylic emulsion, 30 parts of asphalt, 10-25 parts of a polyurethane modified acrylate waterproof emulsion, 1-5 parts of an organosilicone waterproofing agent, 0.5-3 parts of silicon dioxide, 20-40 parts of a pigment and filler, 0-0.5 part of a bactericidal preservative, 0-1 part of an anti-aging agent, 0.2-0.8 part of a dispersing agent, 0.4-1 part of polyethylene glycol, 0.5-2 parts of a film-forming aid, 0.6-3 parts of hydroxyethyl cellulose, 0.3-1 part of ammonium metavanadate and 10-30 parts of water. The asphalt-containing waterproof mortar has excellent high elasticity and excellent waterproof performance; a product is non-toxic, tasteless, safe and environmentally friendly; a coating film is strong in water resistance, alkali resistance and ultraviolet resistance and has relativelyhigh elongation at break, relatively high tensile strength and a relatively high automatic repairing function.

Description

technical field [0001] The invention belongs to the field of building materials, and more specifically relates to an asphalt waterproof mortar and a preparation method thereof. Background technique [0002] There are two types of waterproof materials on the market: one is polyurethane waterproof coatings. Such materials are generally made of polyurethane and coal tar as raw materials. The tar gas it volatilizes is highly toxic and not easy to remove, so it was banned in China in 2000. The polyurethane waterproof coating that is still on sale uses asphalt instead of coal tar as a raw material. However, when using this kind of coating, it is generally diluted with organic solvents such as toluene and xylene, so it also contains toxicity; the other type is polymer cement-based waterproof coating. It is composed of a variety of water-based polymer emulsions and high-quality cement mixed with various additives. The flexibility of the polymer (resin) and the rigidity of the cem...

AI Technical Summary

Problems solved by technology

The first type of solvent-based coatings: there are many types of such coatings and the quality is good, but the cost is high, the safety is poor, and the use is not very common

The second type is water-emulsion type and reactive polymer coatings: it is difficult to uniformly disperse various reinforcing agents, fillers, and polymer elastomers in the colloid for this type of coating, and can only be added by grinding. A small amount of compounding agent, reactive polyurethane is two-component, easy to deteriorate, high cost

The third type of plastic modified asphalt: this type of product can resist ultraviolet rays and high temperature resistance, but the fracture elongation is slightly poor