Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing non-autoclaved hydrophobic fiber reinforced calcium silicate board from fly ash
The invention provides a method for preparing a non-autoclaved hydrophobic fiber reinforced calcium silicate board from fly ash, which comprises the following steps of: (1) mixing fly ash, calcium oxide, a dilute sodium hydroxide solution and a structure regulator according to a certain ratio in a closed reactor for one-step dynamic hydrothermal reaction, and after the reaction, filtering and washing slurry to obtain hydrated wet calcium silicate slag; and (2) well mixing the hydrated wetcalcium silicate slag obtained in the step (1) with cement, fibers and an organosilicon waterproofing agent according to a certain mass ratio, carrying out compression molding under the pressure of 20-60MPa, demolding a molded blank, and drying to obtain a non-autoclaved hydrophobic fiber reinforced calcium silicate board. Fly ash is used as a raw material, and the raw material belongs to bulk industrial solid waste and is cheap and easy to obtain. An autoclaved curing process is not needed, the equipment investment is low, the production process is simple, the energy consumption is low, and economy and feasibility are realized.
本发明提供了一种利用粉煤灰制备免蒸压疏水性纤维增强硅酸钙板的方法，包括以下步骤：(1)将粉煤灰、氧化钙、氢氧化钠稀溶液和结构调节剂按一定比例混合在密闭反应器中进行一步动态水热反应，反应后将料浆过滤、洗涤得到水化硅酸钙湿渣；(2)将步骤(1)所得水化硅酸钙湿渣与水泥、纤维和有机硅防水剂按一定质量比例混合均匀，在20～60MPa压力下压制成型，成型后的坯体脱模，干燥后制得免蒸压疏水性纤维增强硅酸钙板。本发明以粉煤灰为原料，原料属大宗工业固体废弃物，廉价易得；无需蒸压养护工艺，设备投资少，生产工艺简单，能耗低，经济易行。
Method for preparing non-autoclaved hydrophobic fiber reinforced calcium silicate board from fly ash
The invention provides a method for preparing a non-autoclaved hydrophobic fiber reinforced calcium silicate board from fly ash, which comprises the following steps of: (1) mixing fly ash, calcium oxide, a dilute sodium hydroxide solution and a structure regulator according to a certain ratio in a closed reactor for one-step dynamic hydrothermal reaction, and after the reaction, filtering and washing slurry to obtain hydrated wet calcium silicate slag; and (2) well mixing the hydrated wetcalcium silicate slag obtained in the step (1) with cement, fibers and an organosilicon waterproofing agent according to a certain mass ratio, carrying out compression molding under the pressure of 20-60MPa, demolding a molded blank, and drying to obtain a non-autoclaved hydrophobic fiber reinforced calcium silicate board. Fly ash is used as a raw material, and the raw material belongs to bulk industrial solid waste and is cheap and easy to obtain. An autoclaved curing process is not needed, the equipment investment is low, the production process is simple, the energy consumption is low, and economy and feasibility are realized.
本发明提供了一种利用粉煤灰制备免蒸压疏水性纤维增强硅酸钙板的方法，包括以下步骤：(1)将粉煤灰、氧化钙、氢氧化钠稀溶液和结构调节剂按一定比例混合在密闭反应器中进行一步动态水热反应，反应后将料浆过滤、洗涤得到水化硅酸钙湿渣；(2)将步骤(1)所得水化硅酸钙湿渣与水泥、纤维和有机硅防水剂按一定质量比例混合均匀，在20～60MPa压力下压制成型，成型后的坯体脱模，干燥后制得免蒸压疏水性纤维增强硅酸钙板。本发明以粉煤灰为原料，原料属大宗工业固体废弃物，廉价易得；无需蒸压养护工艺，设备投资少，生产工艺简单，能耗低，经济易行。
Method for preparing non-autoclaved hydrophobic fiber reinforced calcium silicate board from fly ash
一种利用粉煤灰制备免蒸压疏水性纤维增强硅酸钙板的方法
WANG ZEHUA (Autor:in) / WU DAISHE (Autor:in) / LI HAN (Autor:in) / YANG YIFEI (Autor:in) / ZHENG HAIXIN (Autor:in)
09.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| British Library Conference Proceedings | 1999
| Europäisches Patentamt | 2023