Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-alkali liquid accelerator for shotcrete and preparation method of low-alkali liquid accelerator
The invention relates to a low-alkali liquid accelerator for shotcrete and a preparation method thereof. The low-alkali liquid accelerator is prepared from the following raw materials: 17%-20% of sodium hydroxide, 20%-25% of aluminum hydroxide, 1%-5% of zirconium hydroxide, 5%-10% of magnesium-aluminum hydrotalcite, 2%-5% of sodium silicate, 3%-10% of a polyacrylamide aqueous solution with a masspercentage concentration of one thousandth, 1%-3% organic amines, and the balance water. The preparation method comprises the following steps: adding sodium silicate into water, stirring and dissolving to obtain a sodium silicate aqueous solution; adding sodium hydroxide, zirconium hydroxide and the polyacrylamide aqueous solution into a reaction kettle, adding the residual water, heating, keepingthe temperature, adding aluminum hydroxide, stirring, cooling, adding magnesium-aluminum hydrotalcite, stirring, and dropwise adding the sodium silicate aqueous solution; and after dropwise adding isfinished, adding organic amines, stirring, and cooling to room temperature. The liquid accelerator disclosed by the invention is low in mixing amount, good in coagulation accelerating effect, small in resilience, relatively high in later strength and good in cement adaptability.
一种喷射混凝土用低碱液体速凝剂及其制备方法，所述液体速凝剂是由下述原料制成的：氢氧化钠17％～20％，氢氧化铝20％～25％，氢氧化锆1％～5％，镁铝水滑石5％～10％，硅酸钠2％～5％，质量百分比浓度为千分之一的聚丙烯酰胺水溶液3％～10％，有机胺类1％～3％，其余为水。制备方法：将硅酸钠加入到水中搅拌溶解，制得硅酸钠水溶液；将氢氧化钠、氢氧化锆与聚丙烯酰胺水溶液加入反应釜中，加入剩余的水，升温后保温，加入氢氧化铝，搅拌，冷却，降温，加入镁铝水滑石搅拌，滴加硅酸钠水溶液；滴加结束后，加入有机胺类搅拌，冷却至室温即得。本发明的液体速凝剂掺量低，促凝效果好，回弹小、后期强度较高，水泥适应性好。
Low-alkali liquid accelerator for shotcrete and preparation method of low-alkali liquid accelerator
The invention relates to a low-alkali liquid accelerator for shotcrete and a preparation method thereof. The low-alkali liquid accelerator is prepared from the following raw materials: 17%-20% of sodium hydroxide, 20%-25% of aluminum hydroxide, 1%-5% of zirconium hydroxide, 5%-10% of magnesium-aluminum hydrotalcite, 2%-5% of sodium silicate, 3%-10% of a polyacrylamide aqueous solution with a masspercentage concentration of one thousandth, 1%-3% organic amines, and the balance water. The preparation method comprises the following steps: adding sodium silicate into water, stirring and dissolving to obtain a sodium silicate aqueous solution; adding sodium hydroxide, zirconium hydroxide and the polyacrylamide aqueous solution into a reaction kettle, adding the residual water, heating, keepingthe temperature, adding aluminum hydroxide, stirring, cooling, adding magnesium-aluminum hydrotalcite, stirring, and dropwise adding the sodium silicate aqueous solution; and after dropwise adding isfinished, adding organic amines, stirring, and cooling to room temperature. The liquid accelerator disclosed by the invention is low in mixing amount, good in coagulation accelerating effect, small in resilience, relatively high in later strength and good in cement adaptability.
一种喷射混凝土用低碱液体速凝剂及其制备方法，所述液体速凝剂是由下述原料制成的：氢氧化钠17％～20％，氢氧化铝20％～25％，氢氧化锆1％～5％，镁铝水滑石5％～10％，硅酸钠2％～5％，质量百分比浓度为千分之一的聚丙烯酰胺水溶液3％～10％，有机胺类1％～3％，其余为水。制备方法：将硅酸钠加入到水中搅拌溶解，制得硅酸钠水溶液；将氢氧化钠、氢氧化锆与聚丙烯酰胺水溶液加入反应釜中，加入剩余的水，升温后保温，加入氢氧化铝，搅拌，冷却，降温，加入镁铝水滑石搅拌，滴加硅酸钠水溶液；滴加结束后，加入有机胺类搅拌，冷却至室温即得。本发明的液体速凝剂掺量低，促凝效果好，回弹小、后期强度较高，水泥适应性好。
Low-alkali liquid accelerator for shotcrete and preparation method of low-alkali liquid accelerator
一种喷射混凝土用低碱液体速凝剂及其制备方法
LI QIANQIAN (Autor:in) / LIU XUFEI (Autor:in) / LYU DONGWEI (Autor:in) / LIU SONGGUANG (Autor:in) / WANG YUQIAN (Autor:in) / SHI XIONGSONG (Autor:in) / WANG LONGFEI (Autor:in) / DONG SHUQIANG (Autor:in) / LIU JIANGTAO (Autor:in) / LIU CUIFEN (Autor:in)
12.03.2021
Patent
Elektronische Ressource
Chinesisch
Preparation method of alkali-free liquid accelerator for shotcrete
| Europäisches Patentamt | 2015
Alkali-free liquid accelerator for concrete and preparation method of alkali-free liquid accelerator
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023