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

A technology of aerated concrete and autoclaved sand, applied in the field of aerated concrete of engineering buildings, can solve the problems of insufficient durability, large energy consumption, durability cracking, etc., and achieve the effects of low price, saving resources and reducing firing

Active Publication Date: 2017-11-17
福州市宇心建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A neutral sodium saline alkali slag autoclaved sand aerated concrete block, which is made of the following raw materials in parts by weight: 19.2 parts of neutral sodium saline alkali slag cement, 9.6 parts of lime, 55.7 parts of finely ground sand, and 12 parts of waste materials , 3.5 parts of gypsum, 0.086 parts of aluminum powder, and 52 parts of water.

[0037] The lime fineness is 18% (0.080mm square-hole sieve allowance), and the fineness of ground sand powder is 32% (0.080mm square-hole sieve allowance).

[0038] In the neutral sodium saline alkali slag cement, the weight ratio of slag, ordinary Portland cement and fly ash is 6:3:1, and sodium sulfate accounts for 4%.

[0039] A method for preparing neutral sodium saline alkali slag autoclaved sand aerated concrete block, specifically:

[0040] Use the equipment in the air-entrained concrete plant area for production. First, dry-mix the neutral sodium saline-alkali slag cement, lime, finely ground sand, waste ...

Embodiment 2

[0043] A neutral sodium salt alkali slag autoclaved sand aerated concrete block, which is made of the following raw materials in parts by weight: 17 parts of neutral sodium salt alkali slag cement, 10 parts of lime, 60 parts of finely ground sand, and 10 parts of waste materials , 3 parts of gypsum, 0.07 parts of aluminum powder, and 51 parts of water.

[0044] Lime fineness is 20% (0.080mm square hole sieve allowance), ground fineness of sand powder is 30% (0.080mm square hole sieve allowance).

[0045] In the alkali slag cement, the mass ratio of slag, ordinary Portland cement and fly ash is 7:2.5:0.5, and sodium sulfate accounts for 4% of the total mass of slag, ordinary Portland cement and fly ash.

[0046] A method for preparing neutral sodium saline alkali slag autoclaved sand aerated concrete block, specifically:

[0047]Use the equipment in the air-entrained concrete plant area for production. First, dry-mix the neutral sodium saline-alkali slag cement, lime, finely g...

Embodiment 3

[0050] A neutral sodium saline alkali slag autoclaved sand aerated concrete block, which is made of the following raw materials in parts by weight: 16 parts of neutral sodium salt alkali slag cement, 10 parts of lime, 59 parts of finely ground sand, and 10 parts of waste materials , 5 parts of gypsum, 0.1 part of aluminum powder, and 53 parts of water.

[0051] The lime fineness is 16% (0.080mm square-hole sieve allowance), and the fineness of ground sand powder is 35% (0.080mm square-hole sieve allowance).

[0052] In the alkali slag cement, the weight ratio of slag, ordinary Portland cement and fly ash is 5:4:1, and sodium sulfate accounts for 4% of the total mass of slag, ordinary Portland cement and fly ash.

[0053] A method for preparing neutral sodium saline alkali slag autoclaved sand aerated concrete block, specifically:

[0054] Use the equipment in the air-entrained concrete plant area for production. First, dry-mix the neutral sodium saline-alkali slag cement, lim...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/08
CPCC04B28/08C04B2201/20C04B2201/50C04B22/064C04B14/06C04B18/167C04B22/143C04B22/04
Inventor 季韬王灿强石铖铖
Owner 福州市宇心建材科技有限公司
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