Autoclaved aerated concrete slab and production method thereof
A technology of aerated concrete slabs and concrete slabs, applied in ceramic products, other household appliances, applications, etc., can solve problems such as difficulty in meeting sound insulation requirements and poor sound insulation effects, and achieve enhanced structural strength, good sound insulation performance, and good sound insulation performance Effect
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Embodiment 1
[0058] An autoclaved aerated concrete slab, the components and parts by mass used to prepare the autoclaved aerated concrete slab are shown in Table 1. The desulfurization gypsum in Table 1 uses lime-limestone to recover the sulfur dioxide in the flue gas of coal or oil to obtain solid waste.
[0059] Mining and dressing waste comes from limestone mines. Mining and dressing waste is the waste generated when limestone mines are crushed. The maximum particle size of mining and dressing waste is less than 5mm.
[0060]In this embodiment, the particle size of the aluminum powder is 60 μm.
[0061] A method for preparing an autoclaved aerated concrete slab, comprising the following steps:
[0062] S1. Preparation of cemented slurry: Take corresponding parts by mass of lime, cement, desulfurized gypsum and mining ore dressing waste residue and mix them for 4 minutes. While stirring, add 60 parts by mass of water in turn, stir for 15 minutes, and the stirring rate is 120r / min to p...
Embodiment 2
[0072] An autoclaved aerated concrete slab differs from Example 1 in that: the components and mass parts of the autoclaved aerated concrete slab are shown in Table 1.
[0073] In this embodiment, the particle size of the aluminum powder is 62 μm.
[0074] A method for preparing an autoclaved aerated concrete slab, comprising the following steps:
[0075] S1. Preparation of cemented slurry: Take the corresponding parts by mass of lime, cement, desulfurized gypsum and mining ore dressing waste residue and mix them for 5 minutes. While stirring, add 65 parts by mass of water in turn, and stir for 18 minutes. The stirring rate is 130r / min to prepare the cemented slurry.
[0076] S2. Dilute gas generating agent: add water and aluminum powder according to the weight ratio of water to aluminum powder of 28:1 and dilute and stir for 2 minutes to obtain a diluted gas generating agent solution.
[0077] S3. Preparation of mixed cemented slurry foam concrete: mixing and stirring the v...
Embodiment 3
[0085] An autoclaved aerated concrete slab differs from Example 1 in that: the components and mass parts of the autoclaved aerated concrete slab are shown in Table 1.
[0086] The particle size of the aluminum powder is 65 μm.
[0087] A method for preparing an autoclaved aerated concrete slab, comprising the following steps:
[0088] S1. Preparation of cement slurry: Take corresponding parts by mass of lime, cement, desulfurized gypsum and mining ore dressing waste residue and mix them for 6 minutes. While stirring, add 70 parts by mass of water in turn, and stir for 20 minutes. The stirring rate is 140r / min to prepare the cemented slurry.
[0089] S2. Dilute gas generating agent: add water and aluminum powder according to the weight ratio of water to aluminum powder of 28:1 and dilute and stir for 2 minutes to obtain a diluted gas generating agent solution.
[0090] S3. Preparation of mixed cemented slurry foam concrete: mixing and stirring the vermiculite powder and the ...
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Abstract
Description
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