High-ductility waterproof anti-crack composite mortar as well as mixing method and construction process thereof

Abstract

The invention discloses high-ductility waterproof anti-crack composite mortar and a mixing method and a construction method thereof. The mortar is prepared from cement, fly ash, mineral powder, lime powder, silica fume, a primary admixture, quartz sand, redispersible latex powder, a waterproof agent, polyvinyl alcohol powder, a water reducing agent, an epoxy emulsion, a curing agent, hydroxypropylmethyl cellulose, an expanding agent and polyvinyl alcohol fibers. According to the disclosed mixing method, a reasonable feeding sequence is adopted to obtain a uniform mortar material. The construction method provided by the invention adopts construction steps suitable for the mortar provided by the invention for different building environments. The composite mortar prepared by the invention has the advantages of water resistance, crack resistance, high ductility, high cohesiveness, seepage resistance, harmful ion erosion resistance, no shrinkage, simplicity and convenience in constructionand the like; can be used for rigid waterproof and anti-cracking engineering of building outer walls and toilets, rigid waterproof and anti-cracking engineering of places such as elevator shafts, roofs and basements, and hydrological engineering such as ports and wharfs which need to be waterproof, anti-cracking and corrosion-resistant.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a high-ductility waterproof and crack-resistant composite mortar, a mixing method and a construction process thereof. Background technique [0002] Generally speaking, ordinary plastering mortar has low adhesive force, high shrinkage rate, and is extremely easy to crack, which greatly affects the impermeability and durability of the mortar, and brings inconvenience to construction. Therefore, our country was in the 60~ In the 1970s, it began to study polymer cement mortar blended with natural latex, styrene-butadiene latex, neoprene latex, and acrylic copolymer latex, and used it in exterior wall spraying, leak-proof and moisture-proof underground engineering and some special projects. Later, cellulose ethers were commonly used as admixtures for cement-based composite materials at home and abroad, which greatly reduced the amount of polymer blended and saved cost...

AI Technical Summary

Problems solved by technology

However, when mixed with general waterproofing agents, the mechanical properties and durability will be reduced, and the operation time will be short, so it is not suitable for practical projects;

[0006] (3) In recent years, aiming at the problem of cracks in the application of new wall materials, from the perspective of improving the bonding strength of mortar and reducing shrinkage, a variety of waterproof and crack-resistant mortars have been developed, but most of them also have strength and durability. sex problems

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