Light-weight environment-friendly cement board and preparation process thereof

Abstract

The invention belongs to the technical field of building materials and particularly relates to a light-weight environment-friendly cement board and a preparation process thereof. The light-weight environment-friendly cement board comprises a hearth layer, a gridding cloth layer, an intermediate material layer, a gridding cloth layer and a fabric layer at a mass ratio of 5:0.5:2:0.5:5; the hearth layer and the fabric layer comprise the following ingredients in parts by weight: 90-95 parts of sulphate aluminium cement, 0.1-0.4 part of a modifier and 5-10 parts of water; the modifier comprises the following ingredients in parts by weight: 3-5 parts of Nekal BX, 10-15 parts of ammonium carbonate, 5-15 parts of magnesium hydrate, 5-8 parts of ammonium chloride and 1-3 parts of sodium carboxymethylcellulose; the intermediate material layer comprises the following ingredients in parts by weight: 90-95 parts of sulphate aluminum cement, 5-15 parts of plant straw, 5-15 parts of wood chips and 5-15 parts of water. The light-weight environment-friendly cement board is light in weight, relatively high in strength, low in manufacturing cost and short in production period; sulphate aluminum cement is adopted in the light-weight environment-friendly cement board so as to replace ordinary portland cement in the prior art, so that the production efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a lightweight environmental protection cement board and a preparation process thereof. Background technique [0002] At present, known cement boards are made of cement, stones, yellow sand and steel bars, cement, stones, yellow sand are mixed with water in a certain proportion, are made into a flat plate shape with steel bars, and cement, stones, yellow sand are mixed with water in a certain proportion. The mixture mixed with water is poured into a flat plate made of steel bars, and after the cement solidifies, it becomes a cement board. The cement board is heavy and cannot be moved arbitrarily, and can only be used as a fixed body of wall or platen. [0003] In the prior art, ordinary silica cement is mostly used as the main raw material for lightweight cement boards, because it is widely used, but its setting time is long and the strength growth is slow....

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Problems solved by technology

[0005] In view of the defects of high cost, long production cycle and cumbersome process in the prior art, the object of the present invention is to provide an environmentally friendly cement board with light weight, short production cycle and low cost.

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