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A platform for research: civil engineering, architecture and urbanism
Alkali-free setting accelerator, preparation method and application thereof
The invention relates to the technical field of engineering materials, in particular to an alkali-free setting accelerator, a preparation method and application thereof. The alkali-free setting accelerator is prepared from, by mass, 40-55% of aluminum sulfate, 10-15% of aluminum nitrate, 5.2-10.8% of alkylol amine, 1-1.5% of magnesium fluosilicate, 1-5% of silicate, 0.5-1% of a stabilizer and thebalance water; wherein the stabilizer is a composition prepared by mixing any one or more of sepiolite, zeolite or diatomite according to any proportion. The alkali-free setting accelerator is mainlycomposed of aluminum sulfate, aluminum nitrate, alkylol amine, magnesium fluosilicate and silicate, is extremely low in fluorine content, does not contain other harmful substances, is green and environment-friendly, and does not cause harm to a human body; when the alkali-free setting accelerator is used for spraying concrete, the addition amount of the setting accelerator is small, the initial setting time, the final setting time, the mortar 1d compressive strength, the 28d compressive strength ratio, the 90day compressive strength retention rate and the like of neat paste of the alkali-freesetting accelerator can meet the construction requirements of different types of cement sprayed concrete, and the alkali-free setting accelerator has good cement adaptability.
本发明涉及工程材料技术领域，尤其是涉及一种无碱速凝剂及其制备方法和应用，其中，无碱速凝剂包括以下质量百分数的组分：硫酸铝40‑55％，硝酸铝10‑15％，醇胺5.2‑10.8％，氟硅酸镁1‑1.5％，硅酸盐1‑5％和稳定剂0.5‑1％，余量为水；所述稳定剂为海泡石、沸石或硅藻土中的任意一种或多种以任意比例混配的组合物。本发明的无碱速凝剂主要由硫酸铝、硝酸铝、醇胺、氟硅酸镁、硅酸盐组成，含氟量极低，且不含有其他有害物质，绿色环保，不会对人体造成伤害；而使用本发明的无碱速凝剂用于喷射混凝土时，速凝剂添加量少，其净浆初凝时间、终凝时间，砂浆1d抗压强度、28d抗压强度比、90天抗压强度保留率等，均可满足不同类型的水泥喷射混凝土的施工要求，具有良好的水泥适应性。
Alkali-free setting accelerator, preparation method and application thereof
The invention relates to the technical field of engineering materials, in particular to an alkali-free setting accelerator, a preparation method and application thereof. The alkali-free setting accelerator is prepared from, by mass, 40-55% of aluminum sulfate, 10-15% of aluminum nitrate, 5.2-10.8% of alkylol amine, 1-1.5% of magnesium fluosilicate, 1-5% of silicate, 0.5-1% of a stabilizer and thebalance water; wherein the stabilizer is a composition prepared by mixing any one or more of sepiolite, zeolite or diatomite according to any proportion. The alkali-free setting accelerator is mainlycomposed of aluminum sulfate, aluminum nitrate, alkylol amine, magnesium fluosilicate and silicate, is extremely low in fluorine content, does not contain other harmful substances, is green and environment-friendly, and does not cause harm to a human body; when the alkali-free setting accelerator is used for spraying concrete, the addition amount of the setting accelerator is small, the initial setting time, the final setting time, the mortar 1d compressive strength, the 28d compressive strength ratio, the 90day compressive strength retention rate and the like of neat paste of the alkali-freesetting accelerator can meet the construction requirements of different types of cement sprayed concrete, and the alkali-free setting accelerator has good cement adaptability.
本发明涉及工程材料技术领域，尤其是涉及一种无碱速凝剂及其制备方法和应用，其中，无碱速凝剂包括以下质量百分数的组分：硫酸铝40‑55％，硝酸铝10‑15％，醇胺5.2‑10.8％，氟硅酸镁1‑1.5％，硅酸盐1‑5％和稳定剂0.5‑1％，余量为水；所述稳定剂为海泡石、沸石或硅藻土中的任意一种或多种以任意比例混配的组合物。本发明的无碱速凝剂主要由硫酸铝、硝酸铝、醇胺、氟硅酸镁、硅酸盐组成，含氟量极低，且不含有其他有害物质，绿色环保，不会对人体造成伤害；而使用本发明的无碱速凝剂用于喷射混凝土时，速凝剂添加量少，其净浆初凝时间、终凝时间，砂浆1d抗压强度、28d抗压强度比、90天抗压强度保留率等，均可满足不同类型的水泥喷射混凝土的施工要求，具有良好的水泥适应性。
Alkali-free setting accelerator, preparation method and application thereof
一种无碱速凝剂及其制备方法和应用
LIU XIAOLONG (author) / HU YING (author) / LIU BINGZHEN (author) / CUI YAGE (author) / LIU XIAOFENG (author) / CUI JIANPING (author) / WANG HUI (author)
2020-12-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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