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A platform for research: civil engineering, architecture and urbanism
Product-stable cement-water glass double-liquid grouting material for shield synchronous grouting
The invention discloses a product-stable cement-water glass double-liquid grouting material for shield synchronous grouting, which is composed of a liquid A and a liquid B. The product-stable cement-water glass double-liquid grouting material is characterized in that the liquid A comprises the following components: cement, fly ash, a retarder and water, wherein the cement is 42.5-grade ordinary Portland cement, the fly ash is II-grade fly ash, and the retarder is ammonium dihydrogen phosphate with the purity of more than or equal to 99.0%, the pH value of 4.0-4.5 and the clarity of less than or equal to 3; and the liquid B is water glass with the baume degree of 30-40 degrees and the modulus of 3.1-3.3. The grouting material is used for shield synchronous grouting, the gelling time is short, and the anti-floating performance of pipe pieces is good; and a reaction product is good in stability, not prone to disintegration and cracking under the natural condition of actual engineering, small in volume shrinkage rate and free of degradation of compressive strength, and a formed segmental lining structure is high in strength and good in waterproof performance.
本发明公开了一种产物稳定的盾构同步注浆用水泥‑水玻璃双液注浆料，由A液和B液组成，其特征在于：所述的A液的组分为水泥、粉煤灰、缓凝剂和水；其中，所述的水泥为42.5级的普通硅酸盐水泥，粉煤灰为Ⅱ级粉煤灰，缓凝剂为纯度≥99.0％、PH值4.0～4.5，澄清度≤3的磷酸二氢铵；所述的B液为波美度为30‑40°，模数为3.1～3.3的水玻璃。该种注浆料用于盾构同步注浆，其胶凝时间短、管片的抗浮性能好；且其反应产物的稳定性好，在实际工程的自然条件下不易崩解、开裂，体积收缩率小，抗压强度不劣化，形成的管片衬砌结构的强度高、防水性能好。
Product-stable cement-water glass double-liquid grouting material for shield synchronous grouting
The invention discloses a product-stable cement-water glass double-liquid grouting material for shield synchronous grouting, which is composed of a liquid A and a liquid B. The product-stable cement-water glass double-liquid grouting material is characterized in that the liquid A comprises the following components: cement, fly ash, a retarder and water, wherein the cement is 42.5-grade ordinary Portland cement, the fly ash is II-grade fly ash, and the retarder is ammonium dihydrogen phosphate with the purity of more than or equal to 99.0%, the pH value of 4.0-4.5 and the clarity of less than or equal to 3; and the liquid B is water glass with the baume degree of 30-40 degrees and the modulus of 3.1-3.3. The grouting material is used for shield synchronous grouting, the gelling time is short, and the anti-floating performance of pipe pieces is good; and a reaction product is good in stability, not prone to disintegration and cracking under the natural condition of actual engineering, small in volume shrinkage rate and free of degradation of compressive strength, and a formed segmental lining structure is high in strength and good in waterproof performance.
本发明公开了一种产物稳定的盾构同步注浆用水泥‑水玻璃双液注浆料，由A液和B液组成，其特征在于：所述的A液的组分为水泥、粉煤灰、缓凝剂和水；其中，所述的水泥为42.5级的普通硅酸盐水泥，粉煤灰为Ⅱ级粉煤灰，缓凝剂为纯度≥99.0％、PH值4.0～4.5，澄清度≤3的磷酸二氢铵；所述的B液为波美度为30‑40°，模数为3.1～3.3的水玻璃。该种注浆料用于盾构同步注浆，其胶凝时间短、管片的抗浮性能好；且其反应产物的稳定性好，在实际工程的自然条件下不易崩解、开裂，体积收缩率小，抗压强度不劣化，形成的管片衬砌结构的强度高、防水性能好。
Product-stable cement-water glass double-liquid grouting material for shield synchronous grouting
产物稳定的盾构同步注浆用水泥-水玻璃双液注浆料
REN YUEQIN (author) / WANG SHIMIN (author) / LIN ZHIYU (author) / NIE HUA (author) / WU ZONGLIN (author) / YANG FENG (author) / ZHANG BOYI (author) / JIAN YUNQI (author)
2020-12-04
Patent
Electronic Resource
Chinese
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