A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
C50 steam-curing-free concrete for coastal subway segments and preparation method of C50 steam-curing-free concrete
The invention relates to the technical field of concrete, in particular to C50 steam-curing-free concrete for coastal subway segments and a preparation method of the C50 steam-curing-free concrete. According to the concrete, per cubic meter of the concrete is prepared from the following raw materials: 315-450 kg of cement, 0-67.5 kg of fly ash, 0-135 kg of mineral powder, 728-732.5 kg of sand, 1089-1098.7 kg of pebbles, 18 kg of a nanometer C-S-H-PCE early strength agent, 5.85-20 kg of a water reducing agent and 118.8-135 kg of water. According to the invention, the nanometer C-S-H-PCE is adopted to regulate the early hydration process of the cement, accelerate the generation of early hydration products of the cement and the formation of microstructures, and then a low-energy-consumption high-durability steam-curing-free concrete product is prepared by optimizing a concrete mixing proportion; and the generation of heat damage and structural defects in the product in the damp-heat curing process is effectively avoided, the overall performance of the concrete products is improved and the later maintenance cost of the concrete products is reduced.
本发明涉及混凝土技术领域，特别是一种沿海地铁管片用C50免蒸汽养护混凝土及其制备方法。在所述混凝土中，每立方米混凝土的制备原料包括下列组分：水泥，315‑450kg；粉煤灰，0‑67.5kg；矿粉，0‑135kg；砂，728‑732.5kg；石子，1089‑1098.7kg；纳米C‑S‑H‑PCE早强剂,18kg；减水剂，5.85‑20kg；水，118.8‑135kg。采用纳米C‑S‑H‑PCE调控水泥的早期水化进程，加速水泥早期水化产物的生成和微结构的形成,进一步通过混凝土配合比优化，制备低能耗、高耐久免蒸养混凝土制品，有效避免湿热养护过程中制品内部的热损伤及结构缺陷的产生，提高混凝土制品整体性能，降低混凝土制品后期维护成本。
C50 steam-curing-free concrete for coastal subway segments and preparation method of C50 steam-curing-free concrete
The invention relates to the technical field of concrete, in particular to C50 steam-curing-free concrete for coastal subway segments and a preparation method of the C50 steam-curing-free concrete. According to the concrete, per cubic meter of the concrete is prepared from the following raw materials: 315-450 kg of cement, 0-67.5 kg of fly ash, 0-135 kg of mineral powder, 728-732.5 kg of sand, 1089-1098.7 kg of pebbles, 18 kg of a nanometer C-S-H-PCE early strength agent, 5.85-20 kg of a water reducing agent and 118.8-135 kg of water. According to the invention, the nanometer C-S-H-PCE is adopted to regulate the early hydration process of the cement, accelerate the generation of early hydration products of the cement and the formation of microstructures, and then a low-energy-consumption high-durability steam-curing-free concrete product is prepared by optimizing a concrete mixing proportion; and the generation of heat damage and structural defects in the product in the damp-heat curing process is effectively avoided, the overall performance of the concrete products is improved and the later maintenance cost of the concrete products is reduced.
本发明涉及混凝土技术领域，特别是一种沿海地铁管片用C50免蒸汽养护混凝土及其制备方法。在所述混凝土中，每立方米混凝土的制备原料包括下列组分：水泥，315‑450kg；粉煤灰，0‑67.5kg；矿粉，0‑135kg；砂，728‑732.5kg；石子，1089‑1098.7kg；纳米C‑S‑H‑PCE早强剂,18kg；减水剂，5.85‑20kg；水，118.8‑135kg。采用纳米C‑S‑H‑PCE调控水泥的早期水化进程，加速水泥早期水化产物的生成和微结构的形成,进一步通过混凝土配合比优化，制备低能耗、高耐久免蒸养混凝土制品，有效避免湿热养护过程中制品内部的热损伤及结构缺陷的产生，提高混凝土制品整体性能，降低混凝土制品后期维护成本。
C50 steam-curing-free concrete for coastal subway segments and preparation method of C50 steam-curing-free concrete
沿海地铁管片用C50免蒸汽养护混凝土及其制备方法
WANG PENGGANG (author) / JIN ZUQUAN (author) / FU HUA (author) / CUI DONGBO (author) / ZHAO TIEJUN (author) / SUN XIAOGUANG (author) / GAO SONG (author) / SUN PEIWANG (author) / LI NING (author)
2021-04-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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