Water-repelling foamed concrete preparing method and use thereof

Abstract

The preparation method of water-repellent foamed concrete includes the following steps: (1) preparing foaming agent; (2) preparing water-repelling agent; (3) preparing water-repelling foaming agent; (4) placing the water-repellent foaming agent and 10 times water in weight into a whipping machine and whipping for 10 min.-20 min.; (5). adding cement and water according to the weight rati oof 1:0.4in the blade stirring machine and stirring them to obtain cement slurry; and (6). then adding whipped water-repellent foaming agent to the cement slurry, continuously stirring for 8-15 min to obtain the foamed concrete slurry material which can be used as covering layer of pipe or heat-insulating layer of roof, which has the advantages of low water-absorbing rate, light weight and good heat-insulating and sound-insulating effect, etc.

Description

technical field

[0001] The invention relates to a preparation method of foam concrete, in particular to a preparation method of water-repellent foam concrete. The invention also relates to the use of the products prepared by said method. Background technique

[0002] In the prior art, the preparation method of foamed concrete is mainly to add the foaming agent into the well-mixed cement slurry after foaming in a foaming machine, and the foamed concrete made in this way basically does not have waterproof performance ; There are also cement additives such as organic silicon water added in the process of making lightweight concrete, but its waterproof performance can be maintained for several months at most. In this way, the lightweight concrete without water resistance gradually absorbs water, the bulk density increases, and gradually loses its lightweight characteristics; and its heat insulation and sound insulation effects are also deteriorated.

[0003] In the prior art, ...

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