Preparation method and application of special adhesive mortar material for foam glass external thermal insulation system

Abstract

The invention discloses a special adhesive mortar material for a foam glass thermal insulation system and a preparation method and application thereof. The adhesive mortar is prepared from the following raw materials in percentage by mass 25%-50% of P.O 4.25 cement, 1%-10% of fly ash, 1%-5% of silica fume, 48%-60% of medium sand, 1.5%-3% of redispersible latex powder, 0.03%-0.18% of hydroxypropylmethyl cellulose, 0.15%-0.25% of polypropylene fiber, 0-0.1% of a defoaming agent and 0-0.1% of a water reducing agent. The adhesive mortar has high flexibility and damage resistance, has higher bonding strength, higher flexibility, higher damage resistance and higher weather resistance compared with traditional mortar, and has the advantages of being easy to construct and the like.

Description

technical field [0001] The invention relates to a mortar material or building material and its preparation method and application, in particular to an exterior wall thermal insulation material, its preparation method and application, which are applied in the technical field of polymer mortar and adhesive mortar. Background technique [0002] Foam glass, also known as porous glass, is made of waste glass, fly ash, mica, perlite, pumice powder, volcanic ash, etc. It is a lightweight inorganic porous glassy material produced by preheating, sintering, foaming, cooling, annealing and other processes. The interior of the foam glass is filled with a large number of tiny and uniform pores, forming a uniform gas-solid dual-phase structure. Foam glass has the advantages of low density, low thermal conductivity, low thermal expansion coefficient, stable thermal performance, corrosion resistance, non-combustibility, long service life and convenient construction. Anti-corrosion, mildew...

AI Technical Summary

Problems solved by technology

However, some problems appeared in the application, the most important of which is the hollowing, cracking and falling off of the foam glass external wall insulation system. The reason is that the performance of the bonding mortar is not up to standard and does not match the foam glass.

Foam glass is an inorganic material, which is a brittle material and does not have the high elasticity of organic thermal insulation materials. Therefore, the bonding mortar of foam glass should match the characteristics of foam glass, and the research on its special bonding mortar is still relatively limited. Rarely, the mortar used in construction is mostly mixed on site, and its performance is unstable or even substandard. When used in high-rise buildings, the adhesive layer of foam glass insulation board must be able to withstand years of wind and rain erosion and temperature changes and remain firm all the time. Otherwise, even if individual Facing bricks fall and hurt people, the consequences are disastrous

Therefore, traditional ordinary mortar is difficult to meet the requirements of engineering construction quality, durability and construction efficiency, which restricts the development of foam glass insulation system to the field of civil construction

Images