Neutral sodium saline alkali slag autoclaved sand aerated concrete block and preparation method thereof

Abstract

The invention belongs to the field of aerated concrete for engineering construction and particularly relates to an autoclaved aerated concrete block containing neutral sodium-salt alkali activated slag concrete and a preparation method of the autoclaved aerated concrete block. The concrete block is prepared from raw materials in parts by weight as follows: 15-25 parts of neutral sodium-salt alkali activated slag concrete, 5-15 parts of lime, 50-60 parts of fine sand, 10-15 parts of wastes, 2-5 parts of gypsum, 0.07-0.1 parts of aluminum powder and 45-55 parts of water. The autoclaved aerated concrete block containing the neutral sodium-salt alkali activated slag concrete has the characteristics of high strength, low volume weight, high yield and the like.

Description

technical field [0001] The invention belongs to the field of engineering building aerated concrete, and in particular relates to a neutral sodium saline alkali slag autoclaved sand aerated concrete block and a preparation method thereof. Background technique [0002] Autoclaved aerated concrete blocks can be used as wall filling materials, which have thermal insulation properties, and can meet the requirements of more than 50% of the national energy-saving standard when applied to external walls, without the need for another insulation layer, while porous clay bricks and porous concrete blocks When applied to exterior walls, they must be combined with polystyrene and other thermal insulation materials to meet energy-saving requirements. Therefore, the autoclaved aerated concrete block is the only wall material that can meet the building energy-saving design standards without being used in combination with other materials. [0003] Autoclaved sand aerated concrete blocks are...

AI Technical Summary

Problems solved by technology

With the gradual strengthening of people's awareness of environmental protection, people realize that ordinary Portland cement has many shortcomings, such as high-temperature calcination of ordinary Portland cement clinker, which consumes a lot of energy and emits a large amount of CO. 2 , which is inconsistent with the national policy of advocating energy conservation and environmental protection

Ordinary Portland cement concrete buildings have great problems in durability (such as cracking and insufficient durability, etc.), and the price is relatively high