Environment-friendly aerated concrete block and preparation method thereof

An aerated concrete, green and environmentally friendly technology, applied in the field of building materials, can solve the problems of inconsistent water absorption of aerated concrete blocks, poor moisture conductivity of aerated concrete blocks, inconsistent pore diameters of aerated concrete blocks, etc., to achieve The effect of saving the amount of mining, increasing the bonding strength, and improving the efficiency of construction

Inactive Publication Date: 2018-06-29
青岛广润丰建筑材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to inconsistent pore sizes in the prepared air-entrained concrete blocks, resulting in inconsistent water absorption of the air-entrained concrete blocks
[0004] In the process of using the aerated concrete block, this structure makes the moisture conductivity of the aerated concrete block worse, and it is not easy to wet the inside of the aerated concrete block even if it is watered
After watering, the water on the surface of the block evaporates quickly, but the inside is not wetted. After masonry or plastering, the block directly absorbs water from the mortar, which will cause local water loss at the contact between the mortar and the block Timely replenishment, resulting in dry delamination, resulting in a decrease in the bonding force between the mortar and the block
Plastering of exterior walls has a good waterproof effect, but when the mortar and blocks are not firmly bonded, damage such as hollowing and falling off will occur, which will cause rainwater to enter the wall along these defects and cause damage to the wall

Method used

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  • Environment-friendly aerated concrete block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Coarse aggregate mixing: Take 75kg of fly ash, 55kg of construction waste, 33kg of sand, 26kg of fine sand, and 120kg of water. Blocks, bricks, red mud, the average particle size of construction waste is 0.25mm, the fineness modulus of fine sand is 1.8, and the average particle size is 0.3mm, the fineness modulus of sand is 2.9, and the average particle size is 0.425mm ;

[0031] Fine aggregate mixing: take lime 65kg, gypsum 47kg, Portland cement 31kg, aluminum powder 15kg, quaternary ammonium polycarboxylate superplasticizer 2.85kg, maleamide polycarboxylate superplasticizer 2.85kg, water 80kg, liter Raise the temperature of the raw material system to 40°C, and after uniform stirring, a fine aggregate mixture is obtained;

[0032] Blending: Add the fine aggregate mixture, 12kg of glycyl-D-leucine, and 6kg of 4-carboxybenzocyclobutene into the coarse aggregate mixture, and stir evenly to obtain a blend;

[0033] Resting in pouring: pouring the blend into the mold and ...

Embodiment 2

[0037] Coarse aggregate mixing: Take 70kg of fly ash, 50kg of construction waste, 30kg of sand, 28kg of fine sand, and 120kg of water. Blocks, bricks, red mud, the average particle size of construction waste is 0.3mm, the fineness modulus of fine sand is 1.6, and the average particle size is 0.3mm, the fineness modulus of sand is 3.1, and the average particle size is 0.35mm ;

[0038] Fine aggregate mixing: take 62kg of lime, 45kg of gypsum, 26kg of Portland cement, 16kg of aluminum powder, 3kg of quaternary ammonium polycarboxylate superplasticizer, 2.7kg of maleamide polycarboxylate superplasticizer, and 80kg of water. The temperature of the raw material system reaches 40°C, and after uniform stirring, a fine aggregate mixture is obtained;

[0039] Blending: Add the fine aggregate mixture, 9kg of glycyl-D-leucine, and 9kg of 4-carboxybenzocyclobutene into the coarse aggregate mixture, and stir evenly to obtain a blend;

[0040] Pouring rest: pouring the blend into the mold...

Embodiment 3

[0044] Coarse aggregate mixing: Take 80kg of fly ash, 50kg of construction waste, 30kg of sand, 28kg of fine sand, and 120kg of water. Blocks, bricks, red mud, the average particle size of construction waste is 0.2mm, the fineness modulus of fine sand is 2, and the average particle size is 0.35mm, the fineness modulus of sand is 3.1, and the average particle size is 0.35mm ;

[0045]Fine aggregate mixing: take 68kg of lime, 45kg of gypsum, 26kg of Portland cement, 16kg of aluminum powder, 2.7kg of quaternary ammonium polycarboxylate superplasticizer, 3kg of maleamide polycarboxylate superplasticizer, and 80kg of water. Raw material system temperature to 45°C, after uniform stirring, a fine aggregate mixture is obtained;

[0046] Blending: Add the fine aggregate mixture, 12kg of glycyl-D-leucine, and 12kg of 4-carboxybenzocyclobutene into the coarse aggregate mixture, and stir evenly to obtain a blend;

[0047] Resting in pouring: pouring the blend into the mold and then rest...

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Abstract

The invention relates to an environment-friendly aerated concrete block and a preparation method thereof and belongs to the field of building materials. The environment-friendly aerated concrete blockis prepared from the following raw materials in parts by weight: 70-80 parts of fly ash, 50-60 parts of building wastes, 30-36 parts of sands, 24-28 parts of fine sands, 62-68 parts of limes, 45-49 parts of gypsum, 26-36 parts of portland cement, 14-16 parts of aluminum powder, 5.4-6.0 parts of polycarboxylic series of water reducer, 6-12 parts of glycyl-D-leucine and 6-12 parts of 4-carboxyl benzocyclobutene. The environment-friendly aerated concrete block is uniform in interior air holes and consistent in water absorption rate, is relatively high in adhesion force to mortar which is smearedto the outer surface of the block and lowers the probability that the mortar falls off from the surface of the aerated concrete block.

Description

technical field [0001] The invention relates to the field of building materials, more specifically, it relates to a green environment-friendly aerated concrete block and a preparation method thereof. Background technique [0002] Air-entrained concrete is a light-weight, high-strength new building material, and blocks are one of the main products of air-entrained concrete. Aerated concrete blocks have gradually replaced traditional solid clay bricks and have been widely used due to their light weight, thermal insulation effect, and good sound absorption effect. The pores in the air-entrained concrete block account for about 60% to 70% of its volume, so the shape, size, quantity and distribution of the pores in the air-entrained concrete block almost determine most of the properties of the air-entrained concrete block, such as strength. , water absorption, heat preservation, etc. [0003] In the process of preparing air-entrained concrete blocks, an air-entraining agent is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/02
CPCC04B28/14C04B2111/00017C04B2201/50C04B18/08C04B18/16C04B14/068C04B22/064C04B7/02C04B22/04C04B24/24C04B24/123C04B24/04C04B38/02C04B38/0074
Inventor 栾旭
Owner 青岛广润丰建筑材料有限责任公司
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