Preparation method of environment-friendly autoclaved aerated concrete block
A technology of concrete block and autoclaved aeration, which is applied in the field of building materials to achieve the effects of high ultimate load and compressive strength, large amount of foaming, and good foaming effect.
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Embodiment 1
[0021] The preparation method of a kind of environment-friendly autoclaved aerated concrete block proposed by the present invention comprises the following steps:
[0022] S1. Mix and grind ceramic waste, loess, quicklime, and desulfurized gypsum, and send them to a sintering machine for sintering to obtain mixed aggregate;
[0023] S2. Send methyl acrylate, ethylene oxide, Al / Mg / Ce inorganic salt composite catalyst into a sealed reactor, under nitrogen protection, heat up and stir, let stand, cool, add rosin, phenol, sodium polynaphthalenesulfonate, Mix concentrated sulfuric acid, heat up and stir, add sodium hydroxide and water in turn and stir to obtain a foaming agent;
[0024] S3, adding powdered sodium silicate, calcium lignosulfonate, and anhydrous sodium sulfate to the mixed aggregate for ball milling, adding cement, polyvinyl alcohol, and foaming agent and stirring to obtain a mixed slurry;
[0025] S4. Pouring the mixed slurry into a mold to form it, heating and pre...
Embodiment 2
[0027] The preparation method of a kind of environment-friendly autoclaved aerated concrete block proposed by the present invention comprises the following steps:
[0028] S1. Mix and grind 20 parts of ceramic waste, 25 parts of loess, 4 parts of quicklime, and 12 parts of desulfurized gypsum in parts by weight until the particle size is less than 0.05 mm, and send them to a sintering machine for sintering for 15 minutes at a sintering temperature of 1150 ° C to obtain a mixed aggregate ;
[0029] S2. Put 40 parts of methyl acrylate, 4 parts of ethylene oxide, and 0.1 part of Al / Mg / Ce inorganic salt composite catalyst into a sealed reaction kettle by weight, raise the temperature to 96°C, stir for 4 hours, and let stand for 4 hours under the protection of nitrogen. , cooling, add 5 parts of rosin, 8 parts of phenol, 1 part of sodium polynaphthalene sulfonate, 2 parts of concentrated sulfuric acid and mix, heat up to 60°C and stir for 1.5h, then add 0.5 parts of sodium hydroxid...
Embodiment 3
[0033] The preparation method of a kind of environment-friendly autoclaved aerated concrete block proposed by the present invention comprises the following steps:
[0034] S1. Mix and grind 40 parts of ceramic waste, 15 parts of loess, 10 parts of quicklime, and 5 parts of desulfurized gypsum in parts by weight until the particle size is less than 0.05 mm, and send it to a sintering machine for sintering for 35 minutes at a sintering temperature of 1050 ° C to obtain a mixed aggregate. ;
[0035] S2. Put 80 parts of methyl acrylate, 1 part of ethylene oxide, and 0.2 parts of Al / Mg / Ce inorganic salt composite catalyst into a sealed reaction kettle in parts by weight. Under the protection of nitrogen, heat up to 85°C and stir for 20 hours, then let stand for 2 hours , cool, add 10 parts of rosin, 2 parts of phenol, 2 parts of sodium polynaphthalene sulfonate, and 1 part of concentrated sulfuric acid to mix, heat up to 70°C and stir for 0.5h, then add 1 part of sodium hydroxide a...
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