Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of lightweight autoclaved sand aerated concrete block
The invention relates to a preparation method of a lightweight autoclaved sand aerated concrete block. The method comprises the following steps: 1, weighing the following raw materials in parts by weight: 25-50 parts of cement, 15-25 parts of fly ash, 3-5 parts of desulfurized gypsum, 0.5-3.5 parts of a stable foaming agent and 1.5-5.5 parts of a gel material; 2, uniformly mixing fly ash and cement, adding water, and grinding to obtain a fine slurry; adding the desulfurized gypsum into water to prepare a suspension; 3, stirring the fine slurry, the suspension, the gel material and the stable foaming agent into a slurry, injecting the slurry into a mold, pre-curing for 2 hours, demolding, and cutting to obtain a semi-finished product; 4, performing constant-pressure steam curing to obtain the concrete block. In the preparation process of the stable foaming agent, a coupling agent and the surface of superfine aluminum powder are subjected to condensation polymerization, so that the superfine aluminum powder is covered, sodium metasilicate is hydrolyzed to form hydrated silicon oxide, high activity is achieved, and the coupling agent is adsorbed on the covered surface of the superfine aluminum powder, so that the superfine aluminum powder is endowed with excellent water dispersion performance.
本发明涉及一种轻质蒸压砂加气混凝土砌块的制备方法；第一步、称取原料：25‑50份水泥，15‑25份粉煤灰，3‑5份脱硫石膏，0.5‑3.5份稳定发气剂，1.5‑5.5份凝胶材料；第二步、将粉煤灰和水泥混合均匀后，加入水磨细制得细浆；将脱硫石膏加入水中，制成悬浮液；第三步、将细浆、悬浮液、凝胶材料和稳定发气剂搅拌成浆料，之后注入模具中，预养2h，脱模、切割，制得半成品；第四步、恒压蒸养，制得混凝土砌块；稳定发气剂在制备过程中偶联剂与超细铝粉表面发生缩聚反应，使得超细铝粉被覆盖，偏硅酸钠水解形成水合氧化硅，具有较高的活性，吸附在被覆盖的超细铝粉表面，进而赋予该超细铝粉优异的水分散性能。
Preparation method of lightweight autoclaved sand aerated concrete block
The invention relates to a preparation method of a lightweight autoclaved sand aerated concrete block. The method comprises the following steps: 1, weighing the following raw materials in parts by weight: 25-50 parts of cement, 15-25 parts of fly ash, 3-5 parts of desulfurized gypsum, 0.5-3.5 parts of a stable foaming agent and 1.5-5.5 parts of a gel material; 2, uniformly mixing fly ash and cement, adding water, and grinding to obtain a fine slurry; adding the desulfurized gypsum into water to prepare a suspension; 3, stirring the fine slurry, the suspension, the gel material and the stable foaming agent into a slurry, injecting the slurry into a mold, pre-curing for 2 hours, demolding, and cutting to obtain a semi-finished product; 4, performing constant-pressure steam curing to obtain the concrete block. In the preparation process of the stable foaming agent, a coupling agent and the surface of superfine aluminum powder are subjected to condensation polymerization, so that the superfine aluminum powder is covered, sodium metasilicate is hydrolyzed to form hydrated silicon oxide, high activity is achieved, and the coupling agent is adsorbed on the covered surface of the superfine aluminum powder, so that the superfine aluminum powder is endowed with excellent water dispersion performance.
本发明涉及一种轻质蒸压砂加气混凝土砌块的制备方法；第一步、称取原料：25‑50份水泥，15‑25份粉煤灰，3‑5份脱硫石膏，0.5‑3.5份稳定发气剂，1.5‑5.5份凝胶材料；第二步、将粉煤灰和水泥混合均匀后，加入水磨细制得细浆；将脱硫石膏加入水中，制成悬浮液；第三步、将细浆、悬浮液、凝胶材料和稳定发气剂搅拌成浆料，之后注入模具中，预养2h，脱模、切割，制得半成品；第四步、恒压蒸养，制得混凝土砌块；稳定发气剂在制备过程中偶联剂与超细铝粉表面发生缩聚反应，使得超细铝粉被覆盖，偏硅酸钠水解形成水合氧化硅，具有较高的活性，吸附在被覆盖的超细铝粉表面，进而赋予该超细铝粉优异的水分散性能。
Preparation method of lightweight autoclaved sand aerated concrete block
一种轻质蒸压砂加气混凝土砌块的制备方法
GONG RUICHEN (Autor:in) / XIE FEI (Autor:in) / ZHAO FENG (Autor:in) / XU YONGPENG (Autor:in) / WANG WEI (Autor:in)
01.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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