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A platform for research: civil engineering, architecture and urbanism
Coagulating early strength agent, preparation method thereof and concrete composition
The invention provides a coagulation-accelerating early strength agent and a preparation method thereof, and a concrete composition, the coagulation-accelerating early strength agent contains a lithium salt and nano-scale hydrated calcium silicate powder, the lithium salt is at least one of lithium sulfate and lithium carbonate, and the weight ratio of the nano-scale hydrated calcium silicate powder to the lithium salt is (1-2): 1; the nanoscale hydrated calcium silicate powder contains calcium, silicon and aluminum elements, the molar ratio of calcium to silicon is 1.2-1.5, and the molar ratio of aluminum to silicon is 0.3-0.6. The coagulation-accelerating early strength agent comprises lithium salt and nanoscale hydrated calcium silicate powder, the coagulation time of cement can be shortened, the early strength of concrete can be improved by adding the coagulation-accelerating early strength agent into the concrete, and the coagulation-accelerating early strength agent can be used for shotcrete and can reduce the rebound rate of the shotcrete.
本发明提供了一种促凝早强剂及其制备方法、混凝土组合物，所述促凝早强剂含有锂盐和纳米级水化硅酸钙粉体，所述锂盐为硫酸锂和碳酸锂中的至少一种，所述纳米级水化硅酸钙粉体与锂盐的重量比为（1~2）：1；所述纳米级水化硅酸钙粉体中含有钙、硅和铝元素，其中钙硅摩尔比为1.2~1.5，铝硅摩尔比为0.3~0.6。该促凝早强剂包括锂盐和纳米级水化硅酸钙粉体，可以缩短水泥的凝结时间，在混凝土加入上述促凝早强剂，可提高混凝土早期强度，用于可喷射混凝土，可降低喷射混凝土的回弹率。
Coagulating early strength agent, preparation method thereof and concrete composition
The invention provides a coagulation-accelerating early strength agent and a preparation method thereof, and a concrete composition, the coagulation-accelerating early strength agent contains a lithium salt and nano-scale hydrated calcium silicate powder, the lithium salt is at least one of lithium sulfate and lithium carbonate, and the weight ratio of the nano-scale hydrated calcium silicate powder to the lithium salt is (1-2): 1; the nanoscale hydrated calcium silicate powder contains calcium, silicon and aluminum elements, the molar ratio of calcium to silicon is 1.2-1.5, and the molar ratio of aluminum to silicon is 0.3-0.6. The coagulation-accelerating early strength agent comprises lithium salt and nanoscale hydrated calcium silicate powder, the coagulation time of cement can be shortened, the early strength of concrete can be improved by adding the coagulation-accelerating early strength agent into the concrete, and the coagulation-accelerating early strength agent can be used for shotcrete and can reduce the rebound rate of the shotcrete.
本发明提供了一种促凝早强剂及其制备方法、混凝土组合物，所述促凝早强剂含有锂盐和纳米级水化硅酸钙粉体，所述锂盐为硫酸锂和碳酸锂中的至少一种，所述纳米级水化硅酸钙粉体与锂盐的重量比为（1~2）：1；所述纳米级水化硅酸钙粉体中含有钙、硅和铝元素，其中钙硅摩尔比为1.2~1.5，铝硅摩尔比为0.3~0.6。该促凝早强剂包括锂盐和纳米级水化硅酸钙粉体，可以缩短水泥的凝结时间，在混凝土加入上述促凝早强剂，可提高混凝土早期强度，用于可喷射混凝土，可降低喷射混凝土的回弹率。
Coagulating early strength agent, preparation method thereof and concrete composition
促凝早强剂及其制备方法、混凝土组合物
WANG JINCHUN (author) / HUANG YUMEI (author) / ZHAO MINGMIN (author) / TENG WENSHENG (author) / TIAN YAO (author) / LI QIANQIAN (author) / DONG SHUQIANG (author) / CHEN SEN (author) / HU TAO (author) / ZHAO TINGTING (author)
2023-04-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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