Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shield synchronous grouting material suitable for water-rich karst stratum
The invention discloses a shield synchronous grouting material suitable for a water-rich karst stratum, belongs to the technical field of grouting fillers, and aims to solve the problems that a grouting material prepared in the prior art is poor in fluidity and mechanical strength and is not suitable for shield construction; the water reducing efficiency of a water reducing agent adopted in the grouting material is low. The shield synchronous grouting material suitable for the water-rich karst stratum comprises cement, water, a modified inorganic powder material, a modified water reducing agent, a sulfate drought strength agent and polypropylene fibers. Fly ash floating beads, light calcium carbonate and wollastonite are mixed and ground to micron order, and mixture inorganic powder is obtained; the mixture inorganic powder is modified by the coupling agent and can replace fine aggregate, so that the mechanical strength of the grouting material is improved. The modified water reducing agent with high water reducing efficiency and good dispersity is prepared by carrying out addition polymerization on an esterified monomer containing an aliphatic long chain, hydrolyzed butylidene dianhydride with polyfunctional groups and sodium methallyl sulfonate.
本发明公开了一种适用于富水岩溶地层的盾构同步注浆材料，属于注浆填料技术领域，用于解决现有技术中制备的注浆材料流动性差、力学强度差，不适用于盾构施工用；注浆材料中采用的减水剂减水效率低的技术问题。一种适用于富水岩溶地层的盾构同步注浆材料包括水泥、水、改性无机粉体材料、改性减水剂、硫酸盐类旱强剂和聚丙烯纤维。粉煤灰漂珠、轻质碳酸钙和硅灰石混合研磨至微米级，得到混合物无机粉体；混合物无机粉体经偶联剂改性，可替代细骨料，提高注浆材料的力学强度。将含有脂肪族长链的酯化单体、带有多官能团的水解亚丁基二酸酐和甲基丙烯磺酸钠加聚，制备得到减水效率高、分散性好的改性减水剂。
Shield synchronous grouting material suitable for water-rich karst stratum
The invention discloses a shield synchronous grouting material suitable for a water-rich karst stratum, belongs to the technical field of grouting fillers, and aims to solve the problems that a grouting material prepared in the prior art is poor in fluidity and mechanical strength and is not suitable for shield construction; the water reducing efficiency of a water reducing agent adopted in the grouting material is low. The shield synchronous grouting material suitable for the water-rich karst stratum comprises cement, water, a modified inorganic powder material, a modified water reducing agent, a sulfate drought strength agent and polypropylene fibers. Fly ash floating beads, light calcium carbonate and wollastonite are mixed and ground to micron order, and mixture inorganic powder is obtained; the mixture inorganic powder is modified by the coupling agent and can replace fine aggregate, so that the mechanical strength of the grouting material is improved. The modified water reducing agent with high water reducing efficiency and good dispersity is prepared by carrying out addition polymerization on an esterified monomer containing an aliphatic long chain, hydrolyzed butylidene dianhydride with polyfunctional groups and sodium methallyl sulfonate.
本发明公开了一种适用于富水岩溶地层的盾构同步注浆材料，属于注浆填料技术领域，用于解决现有技术中制备的注浆材料流动性差、力学强度差，不适用于盾构施工用；注浆材料中采用的减水剂减水效率低的技术问题。一种适用于富水岩溶地层的盾构同步注浆材料包括水泥、水、改性无机粉体材料、改性减水剂、硫酸盐类旱强剂和聚丙烯纤维。粉煤灰漂珠、轻质碳酸钙和硅灰石混合研磨至微米级，得到混合物无机粉体；混合物无机粉体经偶联剂改性，可替代细骨料，提高注浆材料的力学强度。将含有脂肪族长链的酯化单体、带有多官能团的水解亚丁基二酸酐和甲基丙烯磺酸钠加聚，制备得到减水效率高、分散性好的改性减水剂。
Shield synchronous grouting material suitable for water-rich karst stratum
一种适用于富水岩溶地层的盾构同步注浆材料
LIU XUEFENG (Autor:in) / LIN WEI (Autor:in) / LIU CHENGFEI (Autor:in) / LIU KAI (Autor:in) / CUI HAIBO (Autor:in)
22.11.2024
Patent
Elektronische Ressource
Chinesisch
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