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Autoclaved aeolian sand aerated concrete blocks and wall panels

A technology of aerated concrete and concrete blocks, applied in the field of wallboard, autoclaved aeolian sand aerated concrete blocks, and aerated concrete blocks, can solve problems such as poor gradation, poor shear resistance, and difficulty in forming. , to achieve the effect of reducing waste of resources

Inactive Publication Date: 2016-06-08
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 blocks and wall panels
  • Autoclaved aeolian sand aerated concrete blocks and wall panels

Examples

Experimental program
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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 the aeolian sand to obtain a slurry with a concentration of 50% by mass. The particle size of the solid particles in the slurry is 80-120 mesh; crush the quicklime and ball-mill it into quicklime powder with a particle size of 150-180 mesh; stir the 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 prod...

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 the quicklime and ball-mill it into quicklime powder with a particle size of 150-180 mesh; stir the 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., qualifi...

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Abstract

The invention provides an autoclaved aeolian sand aerated concrete block and wallboard, which are prepared by the following methods: ball milling aeolian sand or weathered sand to obtain slurry with a mass percentage concentration of 50-70%; crushing quicklime, Grind quicklime powder; stir aluminum powder; take cement, slurry and quicklime powder according to the mass percentage, mix them into a base material, add aluminum powder and gypsum in proportion, and stir evenly to obtain a finished slurry; autoclave according to existing production The method of aerated concrete blocks is pouring, resting, and cutting to form a green body or rough, and after removing the waste on the green body or rough, marshal it into the kettle; perform steam curing and other processes, and pack qualified products to obtain autoclaved aeolian sand Aerated concrete blocks or wall panels; collect the generated waste to make waste slurry; add the waste slurry to the finished slurry for reuse. The concrete blocks and wall boards comprehensively utilize aeolian sand and weathered sand to manufacture building environmental protection materials with good performance, and reduce the collection of river sand and ore sand and waste of resources.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to an aerated concrete block, in particular to an autoclaved aeolian sand aerated concrete block and a wallboard. Background technique [0002] Aeolian sand is a layer of sand deposited by the wind. More common in deserts and Gobi. Its particle size is mainly distributed between 0.074 ~ 0.250mm, the content is as high as more than 90%, and the particles larger than 0.25mm are very few, only 0.1%. The particles smaller than 0.074mm are less than 9%; the non-uniformity coefficient is about 1.35. [0003] The silt and clay content of aeolian sand is very small, the surface activity is very low, loose, non-aggregated, and has obvious non-plasticity. Its particles belong to fine sand, and the composition of sand particles is a natural bad gradation. For aeolian sand with extremely poor gradation and no cohesion, it is difficult to form, and the shear resistance after forming ...

Claims

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Application Information

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