A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Anti-crack concrete for cable-stayed bridge tower column and preparation method of anti-crack concrete
The invention relates to the technical field of concrete materials, in particular to anti-crack concrete for a cable-stayed bridge tower column and a preparation method of the anti-crack concrete. The anti-crack concrete is prepared from the following components in parts by weight: 420 to 460 parts of cement, 20 to 50 parts of fly ash, 660 to 680 parts of fine aggregate, 1070 to 1090 parts of coarse aggregate, 0.5 to 1.5 parts of basalt fiber, 7.0 to 8.0 parts of polycarboxylate superplasticizer, 155 to 165 parts of water and 30 to 40 parts of magnesium oxide expanding agent. The 7d splitting tensile strength of the prepared anti-crack concrete is larger than or equal to 3.2 MPa, the 28d splitting tensile strength of the anti-crack concrete is larger than or equal to 3.8 MPa, and the anti-crack grade reaches the L-III grade.
本申请涉及混凝土材料技术领域，特别涉及一种斜拉桥塔柱用抗裂混凝土及其制备方法。按重量份计，所述抗裂混凝土包括：水泥420～460份，粉煤灰20～50份，细集料660～680份，粗集料1070～1090份，玄武岩纤维0.5～1.5份，聚羧酸减水剂7.0～8.0份，水155～165份，氧化镁膨胀剂30～40份。本申请制备的抗裂混凝土7d劈裂抗拉强度≥3.2MPa，28d劈裂抗拉强度≥3.8MPa，抗裂等级达到L‑Ⅲ级。
Anti-crack concrete for cable-stayed bridge tower column and preparation method of anti-crack concrete
The invention relates to the technical field of concrete materials, in particular to anti-crack concrete for a cable-stayed bridge tower column and a preparation method of the anti-crack concrete. The anti-crack concrete is prepared from the following components in parts by weight: 420 to 460 parts of cement, 20 to 50 parts of fly ash, 660 to 680 parts of fine aggregate, 1070 to 1090 parts of coarse aggregate, 0.5 to 1.5 parts of basalt fiber, 7.0 to 8.0 parts of polycarboxylate superplasticizer, 155 to 165 parts of water and 30 to 40 parts of magnesium oxide expanding agent. The 7d splitting tensile strength of the prepared anti-crack concrete is larger than or equal to 3.2 MPa, the 28d splitting tensile strength of the anti-crack concrete is larger than or equal to 3.8 MPa, and the anti-crack grade reaches the L-III grade.
本申请涉及混凝土材料技术领域，特别涉及一种斜拉桥塔柱用抗裂混凝土及其制备方法。按重量份计，所述抗裂混凝土包括：水泥420～460份，粉煤灰20～50份，细集料660～680份，粗集料1070～1090份，玄武岩纤维0.5～1.5份，聚羧酸减水剂7.0～8.0份，水155～165份，氧化镁膨胀剂30～40份。本申请制备的抗裂混凝土7d劈裂抗拉强度≥3.2MPa，28d劈裂抗拉强度≥3.8MPa，抗裂等级达到L‑Ⅲ级。
Anti-crack concrete for cable-stayed bridge tower column and preparation method of anti-crack concrete
一种斜拉桥塔柱用抗裂混凝土及其制备方法
OU CHANGHONG (author) / DONG ZHICHENG (author) / WANG WEI (author) / CHEN KAIQIAO (author) / CHENG ZHONGHE (author) / WEI ZHI (author) / LIU XU (author) / TANG CHANGYUAN (author) / DU CAO (author) / WU DONGDONG (author)
2021-08-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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