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A platform for research: civil engineering, architecture and urbanism
Synchronous grouting dry material, preparation method thereof and water-rich sand layer large-diameter shield slurry
The invention discloses a synchronous grouting dry material and a preparation method thereof and water-rich sand layer large-diameter shield slurry, the dry material comprises the following components in parts by weight: 90-105 parts of a base material, 0.3-1.5 parts of a first additive, 0.6-1.5 parts of a second additive and 1-2 parts of a third additive, the first additive comprises polyethylene glycol and silica sand, the second additive comprises polyethylene glycol and silica sand, and the third additive comprises polyethylene glycol and silica sand. The second additive comprises alkali metal salt and strong alkali, and the third additive comprises hydroxyethyl cellulose ether, a water reducing agent and sulphoaluminate cement clinker. By selecting and optimizing the additives, the matching proportion of the additives and the quality control of the base material, the slurry mixed with water has the effects of high filling rate, good fluidity, controllable setting time, considerable early strength and good long-term stability. Furthermore, the optimized synchronous grouting dry material is applied to the large-diameter shield synchronous grouting process of the water-rich sand layer, and the application effect of preventing settlement overrun can be effectively improved.
本发明公开了一种同步注浆干料及其制备方法与富水砂层大直径盾构浆料，干料以重量份数计包括以下组分：90～105份的基础料、0.3～1.5份的第一添加料、0.6～1.5份的第二添加料以及1～2份的第三添加料，其中，第一添加料包括聚乙二醇以及硅砂，第二添加料包括碱金属盐以及强碱，第三添加料包括羟乙基纤维素醚、减水剂以及硫铝酸盐水泥熟料。通过对添加料选择和优化，使添加剂间相互配合比例，以及对基础料质量控制，与水混合后的浆料浆液填充率高、流动性好、凝结时间可控、早期强度可观以及长期稳定性能好的效果。进一步地，优化后的同步注浆干料应用至富水砂层大直径盾构同步注浆工艺中，可以有效提高防止沉降超限的应用效果。
Synchronous grouting dry material, preparation method thereof and water-rich sand layer large-diameter shield slurry
The invention discloses a synchronous grouting dry material and a preparation method thereof and water-rich sand layer large-diameter shield slurry, the dry material comprises the following components in parts by weight: 90-105 parts of a base material, 0.3-1.5 parts of a first additive, 0.6-1.5 parts of a second additive and 1-2 parts of a third additive, the first additive comprises polyethylene glycol and silica sand, the second additive comprises polyethylene glycol and silica sand, and the third additive comprises polyethylene glycol and silica sand. The second additive comprises alkali metal salt and strong alkali, and the third additive comprises hydroxyethyl cellulose ether, a water reducing agent and sulphoaluminate cement clinker. By selecting and optimizing the additives, the matching proportion of the additives and the quality control of the base material, the slurry mixed with water has the effects of high filling rate, good fluidity, controllable setting time, considerable early strength and good long-term stability. Furthermore, the optimized synchronous grouting dry material is applied to the large-diameter shield synchronous grouting process of the water-rich sand layer, and the application effect of preventing settlement overrun can be effectively improved.
本发明公开了一种同步注浆干料及其制备方法与富水砂层大直径盾构浆料，干料以重量份数计包括以下组分：90～105份的基础料、0.3～1.5份的第一添加料、0.6～1.5份的第二添加料以及1～2份的第三添加料，其中，第一添加料包括聚乙二醇以及硅砂，第二添加料包括碱金属盐以及强碱，第三添加料包括羟乙基纤维素醚、减水剂以及硫铝酸盐水泥熟料。通过对添加料选择和优化，使添加剂间相互配合比例，以及对基础料质量控制，与水混合后的浆料浆液填充率高、流动性好、凝结时间可控、早期强度可观以及长期稳定性能好的效果。进一步地，优化后的同步注浆干料应用至富水砂层大直径盾构同步注浆工艺中，可以有效提高防止沉降超限的应用效果。
Synchronous grouting dry material, preparation method thereof and water-rich sand layer large-diameter shield slurry
同步注浆干料及其制备方法、富水砂层大直径盾构浆料
BAI WEI (author) / MU WENQING (author) / LIU YUJING (author) / SHEN WENBIN (author) / ZHANG LEI (author) / ZHONG XIAOREN (author)
2023-03-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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