A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prefabricated subway segment concrete based on superfine powder and preparation method thereof
The invention relates to the technical field of concrete, and particularly provides prefabricated subway segment concrete based on superfine powder. The prefabricated subway segment concrete is prepared from the following raw materials in percentage by mass: 5-14% of cement, 2-10% of superfine powder, 12-30% of fine aggregate, 20-40% of coarse aggregate, 0.03-0.5% of a water reducing agent and the balance of water, wherein the total mass is 100%; the water reducing agent is a polycarboxylic acid water reducing agent, a side chain of the polycarboxylic acid water reducing agent contains a rigid ring, the rigid ring contains at least one heteroatom capable of being complexed with Zn ions, and the heteroatom comprises at least one of O, S and N. Components of the superfine powder are further optimized. The structural stability, the corrosion resistance and the workability are excellent.
本申请涉及混凝土技术领域，具体提供了一种基于超微粉的预制地铁管片混凝土；按照总质量计，所述预制地铁管片混凝土的制备原料包括：水泥5‑14％、超微粉2‑10％、细骨料12‑30％、粗骨料20‑40％、减水剂0.03‑0.5％、水补充余量至100％；所述减水剂为聚羧酸减水剂，聚羧酸减水剂的侧链上含有刚性环，刚性环中至少带有1个可以和Zn离子络合的杂原子，所述杂原子包括O、S、N中的至少一种，进一步优化超微粉的组分，本发明所制备的混凝土具有优异的早期、中期和后期抗压强度，优异的结构稳定性、抗腐蚀性以及和易性。
Prefabricated subway segment concrete based on superfine powder and preparation method thereof
The invention relates to the technical field of concrete, and particularly provides prefabricated subway segment concrete based on superfine powder. The prefabricated subway segment concrete is prepared from the following raw materials in percentage by mass: 5-14% of cement, 2-10% of superfine powder, 12-30% of fine aggregate, 20-40% of coarse aggregate, 0.03-0.5% of a water reducing agent and the balance of water, wherein the total mass is 100%; the water reducing agent is a polycarboxylic acid water reducing agent, a side chain of the polycarboxylic acid water reducing agent contains a rigid ring, the rigid ring contains at least one heteroatom capable of being complexed with Zn ions, and the heteroatom comprises at least one of O, S and N. Components of the superfine powder are further optimized. The structural stability, the corrosion resistance and the workability are excellent.
本申请涉及混凝土技术领域，具体提供了一种基于超微粉的预制地铁管片混凝土；按照总质量计，所述预制地铁管片混凝土的制备原料包括：水泥5‑14％、超微粉2‑10％、细骨料12‑30％、粗骨料20‑40％、减水剂0.03‑0.5％、水补充余量至100％；所述减水剂为聚羧酸减水剂，聚羧酸减水剂的侧链上含有刚性环，刚性环中至少带有1个可以和Zn离子络合的杂原子，所述杂原子包括O、S、N中的至少一种，进一步优化超微粉的组分，本发明所制备的混凝土具有优异的早期、中期和后期抗压强度，优异的结构稳定性、抗腐蚀性以及和易性。
Prefabricated subway segment concrete based on superfine powder and preparation method thereof
一种基于超微粉的预制地铁管片混凝土及其制备方法
GENG YI (author) / XIU YUXIN (author) / WU DAN (author) / YAN ZHENYU (author) / ZHI CHAO (author)
2024-06-18
Patent
Electronic Resource
Chinese
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