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Method for preparing concrete block by utilizing composite silicon material and autoclaved aerated concrete block prepared by using method

A technology of concrete block and autoclaved aeration, which is applied in the field of building materials, can solve the problems of easy rupture of bubbles, etc., and achieve the effects of improving the mechanical strength of the product, improving the compressive performance of the product, and improving the bonding strength.

Active Publication Date: 2022-02-22
四川滨水上锦绿色建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, during the preparation of autoclaved aerated concrete blocks, air bubbles are prone to rupture, and the rupture of air bubbles has a certain adverse effect on the compressive strength of autoclaved aerated concrete blocks.

Method used

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  • Method for preparing concrete block by utilizing composite silicon material and autoclaved aerated concrete block prepared by using method
  • Method for preparing concrete block by utilizing composite silicon material and autoclaved aerated concrete block prepared by using method
  • Method for preparing concrete block by utilizing composite silicon material and autoclaved aerated concrete block prepared by using method

Examples

Experimental program
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Embodiment 1

[0037] Embodiment 1: a kind of method utilizing composite silicon material to prepare concrete block, comprises the following steps:

[0038] S1 Mixing: Sieve the machine-made sand with a sieve with a pore size of 250 μm, and select machine-made sand particles with a particle size not greater than 250 μm; sieve the river sand with a sieve with a pore size of 120 μm, and select river sand with a particle size not greater than 120 μm Particles: Screen the tailings sand with a sieve with a pore size of 200 μm, and select tailings sand particles with a particle size not greater than 200 μm. Weigh 125 kg of machine-made sand with a particle size of no more than 250 μm, add 100 kg of river sand with a particle size of no more than 120 μm and 140 kg of tailings sand with a particle size of no more than 200 μm, and mix evenly to obtain a composite silicon material. Weigh 20kg of gypsum, add 220kg of lime powder, 75kg of cement, 4kg of cellulose ether, 3kg of acetate starch and 2kg of ...

Embodiment 2

[0043] The difference between embodiment 2 and embodiment 1 is that the specifications and models of the neutral nano-silica sol used in embodiment 2 are different, and the neutral nano-silica sol used in embodiment 2 is the silica sol aqueous solution (Shandong Baite Co., Ltd.) that the model is LS30C40 New Materials Co., Ltd., the mass concentration of silicon dioxide is 40%, the median particle size is 30nm) and others are consistent with Example 1.

Embodiment 3

[0045] The difference between embodiment 3 and embodiment 1 is that embodiment 3 does not add starch acetate, and others are all consistent with embodiment 1.

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Abstract

The invention discloses a method for preparing a concrete block by utilizing a composite silicon material and an autoclaved aerated concrete block prepared by using the method, and relates to the technical field of building materials. The method for preparing the concrete block by using the composite silicon material in the invention comprises the following steps: S1, mixing: weighing fly ash, adding an additive and a composite silicon material, and carrying out uniform mixing to obtain a mixture; S2, stirring and slurrying: adding water and neutral nano-silica sol into the mixture, carrying out stirring, then adding aluminum powder, and continuing stirring to prepare concrete slurry; S3, foaming and standing: injecting the concrete slurry into a mold, and carrying out foaming and standing to obtain a concrete blank; and S4, steam curing: cutting the concrete blank into concrete blocks, transferring the concrete blocks into an autoclave, and performing steam curing to obtain the autoclaved aerated concrete block. The method for preparing the concrete block by using the composite silicon material has the advantage of improving the compressive strength of the product. The autoclaved aerated concrete block has the advantage of good compression resistance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing concrete blocks by using composite silicon materials and the autoclaved aerated concrete blocks prepared therefrom. Background technique [0002] Autoclaved aerated concrete blocks are mainly made of fly ash, lime, cement, sand, gypsum, etc., and a certain amount of gas-generating agent is added. And made of a porous concrete product. Autoclaved aerated concrete blocks have the advantages of good seismic performance, light weight and good thermal insulation effect, and are gradually being used in the construction field. [0003] In the prior art, aluminum powder is generally used as the gas-generating agent, and alkaline lime and cement are used as the cementitious material. The aluminum powder reacts with the alkali in the system to generate hydrogen gas, resulting in a hollow structure, forming a lightweight, good heat preservation effect and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B14/06C04B18/12C04B24/38C04B24/32C04B38/02B28B1/50B28B11/24B28C5/00C04B111/40
CPCC04B28/14C04B38/02C04B14/06C04B18/12C04B24/38C04B24/32B28C5/006B28B1/50B28B11/245C04B2111/40C04B2201/40C04B7/34C04B7/00C04B24/383C04B22/06C04B22/04Y02W30/91
Inventor 梅小明罗绍东吴东霞
Owner 四川滨水上锦绿色建材有限公司
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