Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-performance alkali-free liquid accelerator for ultralow-temperature sprayed concrete and preparation method of high-performance alkali-free liquid accelerator
The invention discloses a high-performance alkali-free liquid accelerator for ultralow-temperature sprayed concrete and a preparation method of the high-performance alkali-free liquid accelerator. The accelerator is prepared from the following raw materials: 45-55% of aluminum sulfate octadecahydrate, 3-6% of aluminum dihydrogen phosphate, 1-2% of sodium metasilicate pentahydrate, 1-3% of a pH regulator, 2-5% of a composite anti-freezing component, 5-10% of a low-temperature reinforcing component and the balance of water. 2-3 parts of calcium nitrite, 1-2 parts of urea and 4-5 parts of ethylene glycol are added into a container containing 3-4 parts of water and stirred until all the components are completely dissolved, and the composite anti-freezing component is prepared. 3-4 parts of lithium bromide, 0.5-0.8 part of calcium formate and 2.5-3 parts of diethanolisopropanolamine are sequentially added into a container containing 4-5 parts of water, heating and continuous stirring are conducted till all the components are completely dissolved, and the low-temperature reinforcing component is prepared. The accelerator provided by the invention is good in performance, so that concrete can be rapidly coagulated and hardened at negative temperature, enough strength can be achieved within specified time, and smooth construction of sprayed concrete in winter is ensured.
一种超低温喷射混凝土用高性能无碱液体速凝剂及其制备方法，速凝剂由下述原料制成的：45％～55％十八水合硫酸铝，3％～6％磷酸二氢铝，1％～2％五水偏硅酸钠，1％～3％pH调节剂，2％～5％复合防冻组分，5％～10％低温增强组分，余量为水。将2～3份亚硝酸钙、1～2份尿素和4～5份乙二醇加入到盛装有3～4份水的容器中，搅拌，直至各组分完全溶解制得复合防冻组分。将3～4份溴化锂、0.5～0.8份甲酸钙和2.5～3份二乙醇单异丙醇胺依次加入到盛装有4～5份水的容器中，加热继续搅拌，直至各组分完全溶解，制得低温增强组分。本发明的速凝剂性能良好，使混凝土能在负温下能够快速凝结、硬化，并在规定的时间内达到足够的强度，确保了冬季喷射混凝土施工的顺利进行。
High-performance alkali-free liquid accelerator for ultralow-temperature sprayed concrete and preparation method of high-performance alkali-free liquid accelerator
The invention discloses a high-performance alkali-free liquid accelerator for ultralow-temperature sprayed concrete and a preparation method of the high-performance alkali-free liquid accelerator. The accelerator is prepared from the following raw materials: 45-55% of aluminum sulfate octadecahydrate, 3-6% of aluminum dihydrogen phosphate, 1-2% of sodium metasilicate pentahydrate, 1-3% of a pH regulator, 2-5% of a composite anti-freezing component, 5-10% of a low-temperature reinforcing component and the balance of water. 2-3 parts of calcium nitrite, 1-2 parts of urea and 4-5 parts of ethylene glycol are added into a container containing 3-4 parts of water and stirred until all the components are completely dissolved, and the composite anti-freezing component is prepared. 3-4 parts of lithium bromide, 0.5-0.8 part of calcium formate and 2.5-3 parts of diethanolisopropanolamine are sequentially added into a container containing 4-5 parts of water, heating and continuous stirring are conducted till all the components are completely dissolved, and the low-temperature reinforcing component is prepared. The accelerator provided by the invention is good in performance, so that concrete can be rapidly coagulated and hardened at negative temperature, enough strength can be achieved within specified time, and smooth construction of sprayed concrete in winter is ensured.
一种超低温喷射混凝土用高性能无碱液体速凝剂及其制备方法，速凝剂由下述原料制成的：45％～55％十八水合硫酸铝，3％～6％磷酸二氢铝，1％～2％五水偏硅酸钠，1％～3％pH调节剂，2％～5％复合防冻组分，5％～10％低温增强组分，余量为水。将2～3份亚硝酸钙、1～2份尿素和4～5份乙二醇加入到盛装有3～4份水的容器中，搅拌，直至各组分完全溶解制得复合防冻组分。将3～4份溴化锂、0.5～0.8份甲酸钙和2.5～3份二乙醇单异丙醇胺依次加入到盛装有4～5份水的容器中，加热继续搅拌，直至各组分完全溶解，制得低温增强组分。本发明的速凝剂性能良好，使混凝土能在负温下能够快速凝结、硬化，并在规定的时间内达到足够的强度，确保了冬季喷射混凝土施工的顺利进行。
High-performance alkali-free liquid accelerator for ultralow-temperature sprayed concrete and preparation method of high-performance alkali-free liquid accelerator
超低温喷射混凝土用高性能无碱液体速凝剂及其制备方法
TENG WENSHENG (Autor:in) / LIU ZHAOYANG (Autor:in) / ZHAO MINGMIN (Autor:in) / HUANG YUMEI (Autor:in) / WANG YUQIAN (Autor:in) / LI XIXI (Autor:in) / WANG LONGFEI (Autor:in) / WANG JINCHUN (Autor:in) / DING XIWEI (Autor:in) / LIU XUFEI (Autor:in)
22.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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