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A platform for research: civil engineering, architecture and urbanism
Pressure grouting material for low-temperature environment as well as preparation method and application of pressure grouting material
The invention provides a pressure grouting material for a low-temperature environment as well as a preparation method and application thereof, and the pressure grouting material comprises the following raw material components in parts by weight: 10 to 15 parts of sulphoaluminate cement, 20 to 25 parts of siliceous sinking beads, 55 to 65 parts of Portland cement, 1.0 to 3.0 parts of calcium formate, 1.5 to 2.0 parts of aluminum sulfate, 0.1 to 0.3 part of borax, 0.02 to 0.05 part of cellulose ether, 0.20 to 0.30 part of aliphatic azo compound, 0.15 to 0.25 part of polycarboxylate superplasticizer and 0.03 to 0.10 part of siloxane. The initial fluidity of the pressure grouting material used in the low-temperature environment is 10-17s, the initial setting time is 5-7h, the final setting time is less than 10h, the 3d compressive strength is not less than 45Mpa, the 28d compressive strength is not less than 65Mpa, the maximum frost heaving stress at-15 DEG C is less than 50kN, the uniformity variable coefficient is less than 5, and the pressure grouting material is suitable for pressure grouting of bridge prestressed pipelines and tunnel linings under the temperature condition of-10-30 DEG C; in a low-temperature environment of-10 DEG C to 5 DEG C, the concrete has a good gelling property and is free of bleeding and frost heaving.
本发明提供一种低温环境用压力注浆材料、制备方法及应用，所述材料包括以下原料组分：以重量份数计，硫铝酸盐水泥10～15份，硅质沉珠20～25份，硅酸盐水泥55～65份，甲酸钙1.0～3.0份，硫酸铝1.5～2.0份，硼砂0.1～0.3份，纤维素醚0.02～0.05份，脂肪族偶氮化合物0.20～0.30份，聚羧酸减水剂0.15～0.25份，硅氧烷0.03～0.10份。所述低温环境用压力注浆材料的初始流动度为10～17s，初凝凝结时间为5～7h，终凝时间小于10h，3d抗压强度不小于45Mpa，28d抗压强度不小于65Mpa，‑15℃的最大冻胀应力小于50kN，均匀度变异系数小于5，适用于‑10～30℃温度条件下桥梁预应力管道和隧道衬砌脱空压力注浆，在‑10℃～5℃的低温环境下具有良好的胶凝特性，无泌水不冻胀。
Pressure grouting material for low-temperature environment as well as preparation method and application of pressure grouting material
The invention provides a pressure grouting material for a low-temperature environment as well as a preparation method and application thereof, and the pressure grouting material comprises the following raw material components in parts by weight: 10 to 15 parts of sulphoaluminate cement, 20 to 25 parts of siliceous sinking beads, 55 to 65 parts of Portland cement, 1.0 to 3.0 parts of calcium formate, 1.5 to 2.0 parts of aluminum sulfate, 0.1 to 0.3 part of borax, 0.02 to 0.05 part of cellulose ether, 0.20 to 0.30 part of aliphatic azo compound, 0.15 to 0.25 part of polycarboxylate superplasticizer and 0.03 to 0.10 part of siloxane. The initial fluidity of the pressure grouting material used in the low-temperature environment is 10-17s, the initial setting time is 5-7h, the final setting time is less than 10h, the 3d compressive strength is not less than 45Mpa, the 28d compressive strength is not less than 65Mpa, the maximum frost heaving stress at-15 DEG C is less than 50kN, the uniformity variable coefficient is less than 5, and the pressure grouting material is suitable for pressure grouting of bridge prestressed pipelines and tunnel linings under the temperature condition of-10-30 DEG C; in a low-temperature environment of-10 DEG C to 5 DEG C, the concrete has a good gelling property and is free of bleeding and frost heaving.
本发明提供一种低温环境用压力注浆材料、制备方法及应用，所述材料包括以下原料组分：以重量份数计，硫铝酸盐水泥10～15份，硅质沉珠20～25份，硅酸盐水泥55～65份，甲酸钙1.0～3.0份，硫酸铝1.5～2.0份，硼砂0.1～0.3份，纤维素醚0.02～0.05份，脂肪族偶氮化合物0.20～0.30份，聚羧酸减水剂0.15～0.25份，硅氧烷0.03～0.10份。所述低温环境用压力注浆材料的初始流动度为10～17s，初凝凝结时间为5～7h，终凝时间小于10h，3d抗压强度不小于45Mpa，28d抗压强度不小于65Mpa，‑15℃的最大冻胀应力小于50kN，均匀度变异系数小于5，适用于‑10～30℃温度条件下桥梁预应力管道和隧道衬砌脱空压力注浆，在‑10℃～5℃的低温环境下具有良好的胶凝特性，无泌水不冻胀。
Pressure grouting material for low-temperature environment as well as preparation method and application of pressure grouting material
一种低温环境用压力注浆材料、制备方法及应用
WEI YONGFENG (author) / DOU HUI (author) / WANG YUBO (author) / HE YUTAO (author) / WANG JINGBO (author) / GAO JIANGTAO (author) / MA SHENGJUN (author) / DING HONGLI (author) / XU HUAXIN (author) / XIE JUNJIE (author)
2023-10-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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