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A platform for research: civil engineering, architecture and urbanism
Anti-crack mass concrete for bridge and preparation method of anti-crack mass concrete
The invention belongs to the technical field of concrete, and relates to anti-crack mass concrete for a bridge and a preparation method of the anti-crack mass concrete. The invention provides anti-crack mass concrete for a bridge. The anti-crack mass concrete is prepared from the following raw materials in parts by weight: 295 to 350 parts of cement, 15 to 97 parts of fly ash, 750 to 830 parts of machine-made sand, 1200 to 1320 parts of coarse aggregate, 5 to 13 parts of polypropylene fiber, 7 to 12 parts of modified calcium sulphoaluminate, 120 to 140 parts of mixing water, 0.2 to 0.5 part of retarder and 1.6 to 3.5 parts of polycarboxylic acid water reducing agent, the modified calcium sulphoaluminate is prepared by coating the surface of calcium sulphoaluminate with a polyvinyl chloride film. The anti-cracking mass concrete prepared by the invention has good anti-cracking performance, high tensile strength and low shrinkage rate, and can meet the application in the field of bridges.
本发明属于混凝土技术领域，涉及一种用于桥梁的抗裂大体积混凝土及其制备方法。本发明提供了一种用于桥梁的抗裂大体积混凝土，其包括以下重量份数的原料：水泥295‑350份、粉煤灰15‑97份、机制砂750‑830份、粗骨料1200‑1320份、聚丙烯纤维5‑13份、改性硫铝酸钙7‑12份、拌合水120‑140份、缓凝剂0.2‑0.5份、聚羧酸减水剂1.6‑3.5份；所述改性硫铝酸钙的制备步骤为在硫铝酸钙表面包覆聚氯乙烯膜。本发明制备的抗裂大体积混凝土具有良好的抗裂性能，且抗拉强度高、收缩率低，可以满足在桥梁领域中的应用。
Anti-crack mass concrete for bridge and preparation method of anti-crack mass concrete
The invention belongs to the technical field of concrete, and relates to anti-crack mass concrete for a bridge and a preparation method of the anti-crack mass concrete. The invention provides anti-crack mass concrete for a bridge. The anti-crack mass concrete is prepared from the following raw materials in parts by weight: 295 to 350 parts of cement, 15 to 97 parts of fly ash, 750 to 830 parts of machine-made sand, 1200 to 1320 parts of coarse aggregate, 5 to 13 parts of polypropylene fiber, 7 to 12 parts of modified calcium sulphoaluminate, 120 to 140 parts of mixing water, 0.2 to 0.5 part of retarder and 1.6 to 3.5 parts of polycarboxylic acid water reducing agent, the modified calcium sulphoaluminate is prepared by coating the surface of calcium sulphoaluminate with a polyvinyl chloride film. The anti-cracking mass concrete prepared by the invention has good anti-cracking performance, high tensile strength and low shrinkage rate, and can meet the application in the field of bridges.
本发明属于混凝土技术领域，涉及一种用于桥梁的抗裂大体积混凝土及其制备方法。本发明提供了一种用于桥梁的抗裂大体积混凝土，其包括以下重量份数的原料：水泥295‑350份、粉煤灰15‑97份、机制砂750‑830份、粗骨料1200‑1320份、聚丙烯纤维5‑13份、改性硫铝酸钙7‑12份、拌合水120‑140份、缓凝剂0.2‑0.5份、聚羧酸减水剂1.6‑3.5份；所述改性硫铝酸钙的制备步骤为在硫铝酸钙表面包覆聚氯乙烯膜。本发明制备的抗裂大体积混凝土具有良好的抗裂性能，且抗拉强度高、收缩率低，可以满足在桥梁领域中的应用。
Anti-crack mass concrete for bridge and preparation method of anti-crack mass concrete
一种用于桥梁的抗裂大体积混凝土及其制备方法
HU XIAO (author) / ZHANG ZICHUAN (author) / FENG DONGMING (author) / LIU WENCAI (author) / XUE ZHIPENG (author) / WANG MIAN (author) / ZHAO ZHONGKAI (author) / MA FEI (author) / ZENG SHICHAO (author) / JI KE (author)
2024-07-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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