High-performance aerated block and preparation method thereof

Abstract

The invention discloses a high-performance aerated block which is characterized by comprising the following components in parts by weight: 15-20 parts of lime, 15-20 parts of cement, 60-65 parts of tailing powder, 2-3 parts of gypsum, 0.5-0.6 part of aluminum powder and 0.03-0.05 part of additive. The additive is prepared from the following components in parts by weight: 2-5 parts of rosin-based hyperbranched epoxy resin, 4-8 parts of volcanic ash, 0.5-1.5 parts of carbon fiber and 0.3-0.6 part of lambda carrageenan. The invention further provides a preparation method of the high-performance aerated block. The high-performance aerated block disclosed by the invention is excellent in comprehensive performance, more excellent in mechanical property, higher in performance stability and waterseepage prevention performance, lower in drying shrinkage value and safer and more environment-friendly to use.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-performance aerated block and a preparation method thereof. Background technique [0002] Aerated blocks are aerated concrete blocks produced by high-temperature autoclaved equipment. They can be tailored according to different local raw materials and conditions. The raw materials can be river sand, fly ash, ore, etc. Utilization is beneficial to environmental protection and truly turns waste into treasure. The aerated block has light bulk density, heat preservation, heat insulation, sound insulation, and is easy to process. It is made of a variety of mixtures, rich in raw materials, and has good social and economic benefits. It is an ideal wall material to replace traditional solid clay bricks. [0003] At present, the internal air holes of the aerated block are connected, which affects the thermal insulation performance, and there are also shortco...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the improvement is mainly through the selection of raw materials. For example, the Chinese invention patent with the application number of 201610672949.5 discloses an aerated block and its preparation method, wherein the preparation method includes: Portland cement, powder Coal ash, gypsum, aluminum powder paste, silicon dioxide, magnesium oxide and water are mixed to form a slurry M; the slurry M is poured and steam pre-oxidized to obtain an aerated block body N; the aerated block body N is cut to form an aerated block, and the aerated block is steam-cured to obtain an aerated block; through the synergistic effect between various raw materials, the obtained aerated block has excellent mechanical strength and is used for the preparation of The method of the air-entraining block is simple and the raw materials are easy to obtain. However, this type of air-entraining block has problems such as large drying shrinkage, low performance stability, and water seepage.