Self-insulation and anti-crack mortar for building formwork walls with ferromagnetism and preparation method thereof

Abstract

The invention discloses self-thermal-insulating anti-cracking mortar used for ferromagnetic building formwork walls and a preparing method thereof, and relates to the technical field of building materials. The mortar includes, by weight, 30-55% of a binding material, 5-25% of magnetic ore powder, 0.5-3% of vermiculite powder, 4-20% of hollow glass microbeads, 15-35% of modified quartz sand, 0.1-1.2% of ecological fibers, and 0.2-1.5% of redispersible latex powder, with the sum being 100%. The binding material, the magnetic ore powder, the ecological fibers and the redispersible latex powder are powder materials. The modified quartz sand, the hollow glass microbeads and the vermiculite powder are fine aggregates, and an admixture is water, with the mass of the admixture being 25-90% of themass of the powder materials. The mortar has advantages including high adhesive force, self thermal insulation, good seepage resistance, high toughness, high waterproof and anti-cracking properties, capability of sound absorbing, good workability, weather resistance, fire resistance, corrosion resistance, good construction performance, and the like.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a self-heating and anti-cracking mortar for building formwork walls with ferromagnetism and a preparation method thereof. Background technique [0002] The building formwork wall is a new type of building wall structure. The steel mesh used in the building formwork wall is directly produced in the factory into pieces according to the height of the wall. It can be assembled on site and poured concrete. It is widely used in multi-storey and small high-rise buildings. After the concrete is poured on the wall, the steel mesh does not need to be dismantled, and it is discarded in the wall, which reduces a lot of workload and increases the strength of the wall. During construction, the outside of the steel mesh needs to be coated with cement mortar, and the thickness of the mortar layer outside the steel mesh is required to be not less than 20 mm, which plays the role of dec...

AI Technical Summary

Problems solved by technology

During construction, the outside of the steel mesh needs to be coated with cement mortar, and the thickness of the mortar layer outside the steel mesh is required to be not less than 20 mm, which plays the role of decorating and protecting the formwork concrete; however, after the ordinary cement mortar is coated on the outside of the steel mesh, due to The expanded metal and the mortar are non-homogeneous substrates, which are prone to cracking; and the stiffeners of the expanded metal are corroded, which leads to the rusting of the hook and tie bars. Therefore, it is necessary to improve the density, impermeability, and viscosity of the cement mortar. Strengthen the thermal insulation performance and durability of the mortar, improve the anti-corrosion and bonding ability of the mortar to the steel mesh, and ensure the overall quality of the wall

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