A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prestressed concrete for bridge and preparation method thereof
The invention discloses prestressed concrete for a bridge and a preparation method of the prestressed concrete. The concrete is prepared from the following raw materials in parts by weight: 400-500 parts of cement, 1000 to 1100 parts of a coarse aggregate, 700 to 800 parts of a fine aggregate, 3-7 parts of an early strength agent, 5-10 parts of a water reducing agent, 15-20 parts of an expanding agent, 200 to 220 parts of water and 5-10 parts of a fiber additive, wherein the fiber additive comprises steel fibers and polyvinyl alcohol fibers, the mass ratio of the steel fibers to the polyvinylalcohol fibers is 1: (0.3-0.5), and the fiber additive has good anti-cracking performances. The invention further provides a preparation method. The concrete prepared through the preparation method has good anti-cracking performance.
本发明公开了一种桥梁用预应力混凝土及其制备方法，混凝土由包含以下重量份的原料制成：水泥400‑500份；粗骨料1000‑1100份；细骨料700‑800份；早强剂3‑7份；减水剂5‑10份；膨胀剂15‑20份；水200‑220份；纤维添加物5‑10份；所述纤维添加物包括钢纤维和聚乙烯醇纤维，所述钢纤维与聚乙烯醇的质量比为1：(0.3‑0.5)，其具有较好的抗裂性能；本申请还提供了一种制备方法，使用此种制备方法制备的混凝土具有较好的抗裂性能。
Prestressed concrete for bridge and preparation method thereof
The invention discloses prestressed concrete for a bridge and a preparation method of the prestressed concrete. The concrete is prepared from the following raw materials in parts by weight: 400-500 parts of cement, 1000 to 1100 parts of a coarse aggregate, 700 to 800 parts of a fine aggregate, 3-7 parts of an early strength agent, 5-10 parts of a water reducing agent, 15-20 parts of an expanding agent, 200 to 220 parts of water and 5-10 parts of a fiber additive, wherein the fiber additive comprises steel fibers and polyvinyl alcohol fibers, the mass ratio of the steel fibers to the polyvinylalcohol fibers is 1: (0.3-0.5), and the fiber additive has good anti-cracking performances. The invention further provides a preparation method. The concrete prepared through the preparation method has good anti-cracking performance.
本发明公开了一种桥梁用预应力混凝土及其制备方法，混凝土由包含以下重量份的原料制成：水泥400‑500份；粗骨料1000‑1100份；细骨料700‑800份；早强剂3‑7份；减水剂5‑10份；膨胀剂15‑20份；水200‑220份；纤维添加物5‑10份；所述纤维添加物包括钢纤维和聚乙烯醇纤维，所述钢纤维与聚乙烯醇的质量比为1：(0.3‑0.5)，其具有较好的抗裂性能；本申请还提供了一种制备方法，使用此种制备方法制备的混凝土具有较好的抗裂性能。
Prestressed concrete for bridge and preparation method thereof
一种桥梁用预应力混凝土及其制备方法
QI DONG (author) / YAO SHAOWU (author) / LIU XIUHONG (author) / ZENG QIRUI (author) / ZHAO YI (author)
2020-12-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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