A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Super-retarded concrete for bridge construction and preparation method of super-retarded concrete
The invention relates to the field of building materials, and particularly discloses super-retarded concrete for bridge construction and a preparation method of the super-retarded concrete. The super-retarded concrete for bridge construction is prepared from the following raw materials in parts by weight: 280 to 300 parts of cement, 680 to 700 parts of machine-made sand, 980 to 1100 parts of coarse aggregate, 30 to 40 parts of fly ash, 50 to 60 parts of mineral powder, 6 to 8 parts of reinforced fiber, 4 to 6 parts of retarder and 2 to 3 parts of water reducing agent, 155 to 165 parts of water; the reinforced fibers are obtained by performing alkali treatment on jute fibers; the preparation method comprises the following steps: mixing and stirring the cement, the fly ash, the mineral powder, the machine-made sand and the coarse aggregate to obtain a solid mixture; adding the rest raw materials except water into the solid mixture, and stirring to obtain concrete slurry; and adding water into the concrete slurry, and stirring to obtain the concrete. The super-retarded concrete for bridge construction has the advantage of improving the crack resistance of the super-retarded concrete.
本申请涉及建筑材料领域，具体公开了一种桥梁施工用超缓凝混凝土及其制备方法。一种桥梁施工用超缓凝混凝土包括以下重量份的原料：水泥280‑300份，机制砂680‑700份，粗骨料980‑1100份，粉煤灰30‑40份，矿粉50‑60份，增强纤维6‑8份，缓凝剂4‑6份，减水剂2‑3份；水155‑165份；增强纤维由黄麻纤维经碱处理得到；其制备方法为：将水泥、粉煤灰、矿粉、机制砂和粗骨料混合后搅拌，得到固体混合物；将除水外的剩余原料加入固体混合物中，搅拌得到混凝土浆体；将水加入混凝土浆体中，搅拌得到混凝土。本申请一种桥梁施工用超缓凝混凝土具有改善超缓凝混凝土抗裂性能的优点。
Super-retarded concrete for bridge construction and preparation method of super-retarded concrete
The invention relates to the field of building materials, and particularly discloses super-retarded concrete for bridge construction and a preparation method of the super-retarded concrete. The super-retarded concrete for bridge construction is prepared from the following raw materials in parts by weight: 280 to 300 parts of cement, 680 to 700 parts of machine-made sand, 980 to 1100 parts of coarse aggregate, 30 to 40 parts of fly ash, 50 to 60 parts of mineral powder, 6 to 8 parts of reinforced fiber, 4 to 6 parts of retarder and 2 to 3 parts of water reducing agent, 155 to 165 parts of water; the reinforced fibers are obtained by performing alkali treatment on jute fibers; the preparation method comprises the following steps: mixing and stirring the cement, the fly ash, the mineral powder, the machine-made sand and the coarse aggregate to obtain a solid mixture; adding the rest raw materials except water into the solid mixture, and stirring to obtain concrete slurry; and adding water into the concrete slurry, and stirring to obtain the concrete. The super-retarded concrete for bridge construction has the advantage of improving the crack resistance of the super-retarded concrete.
本申请涉及建筑材料领域，具体公开了一种桥梁施工用超缓凝混凝土及其制备方法。一种桥梁施工用超缓凝混凝土包括以下重量份的原料：水泥280‑300份，机制砂680‑700份，粗骨料980‑1100份，粉煤灰30‑40份，矿粉50‑60份，增强纤维6‑8份，缓凝剂4‑6份，减水剂2‑3份；水155‑165份；增强纤维由黄麻纤维经碱处理得到；其制备方法为：将水泥、粉煤灰、矿粉、机制砂和粗骨料混合后搅拌，得到固体混合物；将除水外的剩余原料加入固体混合物中，搅拌得到混凝土浆体；将水加入混凝土浆体中，搅拌得到混凝土。本申请一种桥梁施工用超缓凝混凝土具有改善超缓凝混凝土抗裂性能的优点。
Super-retarded concrete for bridge construction and preparation method of super-retarded concrete
一种桥梁施工用超缓凝混凝土及其制备方法
TONG FENGHUA (author) / HE YING (author) / WANG LONG (author) / JIN FENG (author) / WANG JIANSHE (author) / LI ZHIDONG (author) / LI YANKE (author) / LI WENBIN (author)
2022-07-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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