A kind of thermal insulation and sound insulation concrete and its preparation method and construction method

Abstract

The invention discloses a thermal insulation concrete and a preparation method thereof. The preparation method comprises: first weighing gray cement, stone powder, polycarboxylate water reducer, hydroxypropyl methylcellulose, redispersible latex powder, twelve Alkyl sodium sulfate, foam stabilizer, foam leveling agent; each component is put into a powder machine in turn, stirred evenly, and then packaged in separate bags to obtain the heat-insulating and sound-insulating concrete. Using stone powder as the raw material of concrete to replace part of the cement can not only realize the recycling and reuse of stone powder, reduce environmental pollution, but also reduce the cost of thermal insulation and sound insulation concrete as a whole. At the same time, mixing stone powder with foaming agent sodium lauryl sulfate and other components can be directly carried out after mixing with water. The construction efficiency is high. The prepared concrete is easy to form a large number of uniform closed pores, and the opening rate is generally below 13%. Thereby, the thermal insulation, sound insulation, heat insulation and other properties of concrete can be greatly improved, and the density of concrete can also be reduced.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a thermal insulation and sound insulation concrete, a preparation method and a construction method thereof. Background technique [0002] Cellular concrete is a lightweight, heat-insulating, heat-insulating, refractory, sound-insulating and frost-resistant concrete material. Cellular concrete generally fully foams the foaming agent mechanically through an air bubble machine, and then uniformly mixes the foam and cement slurry through a mixing system, and then performs cast-in-place construction or mold molding through a pumping system, and is formed by natural curing. A new lightweight insulation material with a large number of closed pores. Cellular concrete can be prepared into concrete foam bricks by molding. [0003] The current construction process of cellular concrete must use three sets of equipment, namely a foaming machine, a mixing system and a pumping system. The fo...

AI Technical Summary

Problems solved by technology

Therefore, if the technical scheme of this patent is adopted, it can only be constructed after being prepared into concrete foam bricks, and cannot be poured on site, which increases the construction cost

At the same time, the preparation time of concrete foam bricks is as long as about one month, and the preparation efficiency is extremely low

[0006] The current concrete foam bricks still have the following deficiencies in overall performance: the strength is low, generally lower than 2.0MPa, and some are even less than 1.0MPa; The destructive effect of air bubbles makes the pores in them mostly open, which seriously affects the thermal insulation performance of concrete foam bricks; and it is easy to crack and absorb water.

At present, a large amount of waste stone powder produced in the stone processing process is basically directly discharged into the environment, causing great pollution to the environment.

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