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Autoclaved aeolian sand aerated concrete building block and wallboard

A technology of aerated concrete and concrete block, which is applied in the field of wallboard, aerated concrete block and autoclaved aerated sand aerated concrete block, can solve the problems of poor gradation, poor shear resistance, difficult forming, etc. , to achieve the effect of reducing waste of resources

Inactive Publication Date: 2014-11-26
JINGTAI FUHAI SUNSHINE BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For aeolian sand with extremely poor gradation and no cohesion, it is difficult to form, and the shear resistance after forming is also poor

Method used

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  • Autoclaved aeolian sand aerated concrete building block and wallboard
  • Autoclaved aeolian sand aerated concrete building block and wallboard

Examples

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Effect test

preparation example Construction

[0027] Aluminum powder is used in the preparation process of the concrete blocks and wallboards of the present invention: the main purpose of the aluminum powder is that the aluminum powder reacts with silicon dioxide and quicklime to release gas during the production process, so that the produced concrete blocks are formed porous structure. Put the aluminum powder into the aluminum powder slurry mixing tank and stir well, then put it into the pouring mixer together with quicklime, gypsum, mortar and other raw materials. The concrete slurry expands to form a porous structure. So that the general weight of the produced air-entrained concrete blocks is 400-700kg / m 3 , which is only equivalent to 1 / 4 to 1 / 5 of the weight of clay bricks, and 1 / 5 of the weight of ordinary concrete, which is a lighter type of concrete.

[0028] In addition, the use of aluminum powder can also make the aerated concrete block have the following effects.

[0029] 1. Sound insulation effect, because ...

Embodiment 1

[0037] Ball mill aeolian sand to obtain a slurry with a concentration of 50% by mass. The particle size of solid particles in the slurry is 80-120 mesh; crush quicklime and ball-mill it into quicklime powder with a particle size of 150-180 mesh; stir aluminum powder; Percentage, respectively take 10% of cement, 75% of slurry and 15% of quicklime powder, mix them to form a base material, and then press 1m 3 Add 0.5kg of aluminum powder to the base material, add the stirred aluminum powder into the base material; take gypsum according to 5% of the base material weight, add the taken gypsum into the base material, stir evenly, and obtain the finished slurry; According to the existing method for producing autoclaved aerated concrete blocks, pouring, static curing, and cutting are carried out to form a green body. After removing the waste on the green body, the green body is marshaled into the still; Steam curing, board breaking, classification, etc., qualified products are package...

Embodiment 2

[0040] Ball mill the aeolian sand to obtain a slurry with a concentration of 60% by mass. The particle size of the solid particles in the slurry is 80-120 mesh; crush quicklime and ball-mill it into quicklime powder with a particle size of 150-180 mesh; stir aluminum powder; Percentage, respectively take 18% of cement, 70% of slurry and 12% of quicklime powder, mix them to form a base material, and then press 1m 3 Add 0.5kg of aluminum powder to the base material, add the stirred aluminum powder into the base material; take gypsum according to 4% of the weight of the base material, add the taken gypsum into the base material, stir evenly, and obtain the finished slurry; According to the existing method for producing autoclaved aerated concrete blocks, pouring, static curing, and cutting are carried out to form a green body. After removing the waste on the green body, the green body is marshaled into the still; Steam curing, board breaking, classification, etc., qualified produ...

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Abstract

The invention provides an autoclaved aeolian sand aerated concrete building block and wallboard which are prepared by the following method: performing ball milling on aeolian sand or weathered sand to obtain slurry with the mass percentage concentration of 50 to 70%; crushing quick lime, grinding into quick lime powder; mixing aluminum powder; according to mass percentage, respectively taking cement, the slurry and the quick lime powder for mixing into a base material, proportionally adding the aluminum powder and gypsum, and stirring evenly to obtain finished product slurry; according to an autoclaved aerated concrete building block production process in the prior art, pouring, curing and cutting to form a green body or a workblank, removing wastes on the green body or the workblank, grouping into a reactor; performing autoclaving and maintaining and other processes, and packaging qualified products to obtain the autoclaved aeolian sand aerated concrete building block or wallboard; collecting produced waste to prepare waste slurry; and adding the waste slurry into the finished product slurry for using again. The concrete building block and wallboard can be prepared into building and environmental protection materials with good performances by comprehensive utilization of the aeolian sand and the weathered sand, and the river sand and ore sand collection and waste of resources can be reduced.

Description

Technical field [0001] The present invention belongs to the field of building material technology. It involves a gas -added concrete block, which specializes in a steam pressure wind accumulation sand and gas -reinforced concrete blocks and wall plates. Background technique [0002] Wind sand is a sand layer blown by wind.It is more common in desert and Gobi.Its particle size is mainly distributed between 0.074 and 0.250mm, with a content of more than 90%, and fewer particles greater than 0.25mm, only 0.1%.The particles less than 0.074mm are only less than 9%; the uneven coefficient is about 1.35. [0003] The content of the powder of the wind accumulation sand is very small, the surface activity is very low, loose and non -aggregated, and it has obvious non -plasticity. Its particles are fine sand, and the composition of sand particles is a natural and bad match.For the extremely poor grade, the windy stitching of non -adhesive, it is difficult to mold, and the shear performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14C04B14/04
Inventor 魏吉祥张翾罗振学
Owner JINGTAI FUHAI SUNSHINE BUILDING MATERIAL
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