Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-blocking and anti-floating grouting material for shield tunnel synchronous grouting
The invention discloses an anti-blocking and anti-floating grouting material for shield tunnel synchronous grouting, which comprises the following components: water, cement, water glass and a retarder, and is characterized in that the cement is 42.5-grade Portland cement; wherein the water glass is a sodium silicate aqueous solution with a baume degree of 30-40 degrees and a modulus of 3.1-3.3, and the retarder is an ammonium dihydrogen phosphate crystal with a purity of 99.0% or more, a pH value of 4.0-4.5 and a clarity of 3 or less. The grouting material not only has good anti-floating performance, but also can be used for quickly gelatinizing and eliminating buoyancy borne by the duct piece, so that the anti-floating requirement of the shield tunnel is met; the anti-blocking performanceis good, the situation that the grouting pipe is blocked due to the fact that slurry is gelled in the grouting pipe is avoided, and the construction efficiency is high; and meanwhile, the strength ofstones formed by grouting is high, so that the shield tunnel structure is more stable and reliable.
本发明公开了一种抗堵抗浮的盾构隧道同步注浆用注浆料，其组分为水、水泥、水玻璃和缓凝剂，其特征在于：所述的水泥为42.5级硅酸盐水泥；水玻璃为波美度为30°‑40°，模数为3.1‑3.3的硅酸钠水溶液，缓凝剂为纯度≥99.0％、PH值为4.0‑4.5，澄清度≤3的磷酸二氢铵晶体。该注浆料既具有良好的抗浮性能，能较快的胶凝并消除管片受到的浮力，满足盾构隧道抗浮的要求；又具有良好的抗堵性能，浆料不会在注浆管内胶凝、引起注浆管堵塞，其施工效率高；同时，以其注浆形成的结石强度大，使得盾构隧道结构更稳固、可靠。
Anti-blocking and anti-floating grouting material for shield tunnel synchronous grouting
The invention discloses an anti-blocking and anti-floating grouting material for shield tunnel synchronous grouting, which comprises the following components: water, cement, water glass and a retarder, and is characterized in that the cement is 42.5-grade Portland cement; wherein the water glass is a sodium silicate aqueous solution with a baume degree of 30-40 degrees and a modulus of 3.1-3.3, and the retarder is an ammonium dihydrogen phosphate crystal with a purity of 99.0% or more, a pH value of 4.0-4.5 and a clarity of 3 or less. The grouting material not only has good anti-floating performance, but also can be used for quickly gelatinizing and eliminating buoyancy borne by the duct piece, so that the anti-floating requirement of the shield tunnel is met; the anti-blocking performanceis good, the situation that the grouting pipe is blocked due to the fact that slurry is gelled in the grouting pipe is avoided, and the construction efficiency is high; and meanwhile, the strength ofstones formed by grouting is high, so that the shield tunnel structure is more stable and reliable.
本发明公开了一种抗堵抗浮的盾构隧道同步注浆用注浆料，其组分为水、水泥、水玻璃和缓凝剂，其特征在于：所述的水泥为42.5级硅酸盐水泥；水玻璃为波美度为30°‑40°，模数为3.1‑3.3的硅酸钠水溶液，缓凝剂为纯度≥99.0％、PH值为4.0‑4.5，澄清度≤3的磷酸二氢铵晶体。该注浆料既具有良好的抗浮性能，能较快的胶凝并消除管片受到的浮力，满足盾构隧道抗浮的要求；又具有良好的抗堵性能，浆料不会在注浆管内胶凝、引起注浆管堵塞，其施工效率高；同时，以其注浆形成的结石强度大，使得盾构隧道结构更稳固、可靠。
Anti-blocking and anti-floating grouting material for shield tunnel synchronous grouting
抗堵抗浮的盾构隧道同步注浆用注浆料
WANG SHIMIN (Autor:in) / WANG XIANG (Autor:in) / CHEN JUN (Autor:in) / WANG XIANMING (Autor:in) / HE XIAOYONG (Autor:in) / LIN ZHIYU (Autor:in) / JIAN YUNQI (Autor:in)
27.11.2020
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024