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A kind of high aluminum fly ash lightweight autoclaved aerated concrete plate and its preparation method

A high-aluminum fly ash, autoclaved aeration technology, applied in ceramic products, other household appliances, climate sustainability, etc., can solve the problems of low product molding qualification rate, production difficulties, and high moisture content of the green body

Active Publication Date: 2022-06-07
内蒙古汇方新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the problems in the above-mentioned prior art that the light-weight aerated sheet with B05 bulk density is difficult to produce, the high water content of the green body in the early stage leads to mold collapse, and the defects such as low product forming pass rate make it impossible to produce large-scale industrial production, the present invention proposes A high-alumina fly ash lightweight autoclaved aerated concrete slab and its preparation method can be prepared with an absolute dry density of ≤550kg / m3, a compressive strength of more than 3.5MPa, and the green body does not collapse, continuous and stable production, High-aluminum fly ash lightweight autoclaved aerated concrete panels with a pass rate of more than 98%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of high alumina fly ash light autoclaved aerated concrete slab, the concrete slab consists of the following mass percentage of raw materials: high alumina fly ash 45%, silica sand 27%, cement 8%, lime 15%, desulfurization gypsum 4.85%, aluminum powder 0.10%, compound admixture 0.05%, water ratio 0.66;

[0044] The compound admixture: melamine formaldehyde resin: polymethacrylic acid: triterpene saponin: triethanolamine oleic acid mass ratio of 1: 0.2: 0.4: 1.

[0045] According to the above ratio, the preparation method of the high alumina fly ash lightweight autoclaved aerated concrete plate is as follows:

[0046] S1, the high alumina fly ash, desulfurization gypsum according to the mass percentage weighing, add water in the wet ball mill grinding into a mixed slurry, the proportion of mixed slurry should be controlled at 1.38Kg / m 3 。

[0047] S2, after the S1 mixed slurry is metered, open the slurry valve into the pouring mixer and start the pouring mixer, stir for...

Embodiment 2

[0056] A kind of high alumina fly ash light autoclaved aerated concrete panel, the concrete plate consists of the following mass percentage of raw materials: high alumina fly ash 46%, silica sand 24%, cement 9%, lime 15.6%, desulfurized gypsum 5.2%, aluminum powder 0.12%, admixture 0.08%, water-to-material ratio 0.68.

[0057]The compound admixture: melamine formaldehyde resin: polymethacrylic acid: triterpene saponin: triethanolamine oleic acid mass ratio of 1: 0.25: 0.42: 1.25.

[0058] According to the above ratio, the preparation method of the high alumina fly ash lightweight autoclaved aerated concrete plate is as follows:

[0059] S1, the high alumina fly ash, desulfurization gypsum according to the mass percentage weighing, add water in the wet ball mill grinding into a mixed slurry, the proportion of mixed slurry should be controlled at 1.40Kg / m 3 。

[0060] S2, after the S1 mixed slurry metering, open the slurry valve into the pouring mixer and start the pouring mixer, st...

Embodiment 3

[0069]A kind of high alumina fly ash light autoclaved aerated concrete slab, the concrete slab consists of the following mass percentage of raw materials: high alumina fly ash 45%, silica sand 23.3%, cement 10%, lime 16%, desulfurized gypsum 5.5%, aluminum powder 0.12%, compound admixture 0.08%, water ratio 0.69;

[0070] The compound admixture: melamine formaldehyde resin: polymethacrylic acid: triterpene saponin: triethanolamine oleic acid mass ratio of 1: 0.3: 0.5: 1.5.

[0071] According to the above ratio, the preparation method of the high alumina fly ash lightweight autoclaved aerated concrete plate is as follows:

[0072] S1, the high alumina fly ash, desulfurization gypsum according to the mass percentage of weighing, add water in the wet ball mill grinding into a mixed slurry, the proportion of mixed slurry should be controlled at 1.41Kg / m 3 。

[0073] S2, after the S1 mixed slurry metering, open the slurry valve into the pouring mixer and start the pouring mixer, mix fo...

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Abstract

The invention provides a light-weight autoclaved aerated concrete plate with high-alumina fly ash, which is successfully prepared by adding a compound admixture to high-alumina fly ash, silica sand, cement, lime, desulfurized gypsum and aluminum powder raw materials Dry density ≤ 550kg / m 3 High-aluminum fly ash lightweight autoclaved aerated concrete panels with a compressive strength of more than 3.5MPa, no collapse of the green body, continuous and stable production, and a pass rate of more than 98%.

Description

Technical field [0001] The present invention relates to a high alumina fly ash light autoclaved aerated concrete plate and a preparation method thereof. Background [0002] Autoclaved aerated concrete is a low-energy, environmentally friendly new building material, with light weight, good thermal insulation performance, high strength, good seismic performance, good processing performance, high temperature resistance, good sound insulation performance, a single material can meet the wall insulation requirements and other advantages. It is a lightweight porous silicate product made of silicon material (sand, fly ash and silicon-containing tailings, etc.) and calcareous material (lime, cement), mixed with aerator (aluminum powder), through the process of ingredients, mixing, pouring, pre-feeding, cutting, autoclaving, maintenance and other processes. Aerated concrete production raw materials are abundant, especially the use of fly ash as raw materials, not only can comprehensively u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B28/10C04B24/30C04B111/40
CPCC04B28/10C04B40/0039C04B2111/40C04B2201/20C04B2201/50C04B2201/32C04B18/08C04B14/06C04B7/00C04B22/145C04B22/04C04B24/305C04B24/2641C04B24/10C04B24/122C04B38/02Y02W30/91
Inventor 王海龙周坚民丛龙敏李向东
Owner 内蒙古汇方新型建材有限公司