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A platform for research: civil engineering, architecture and urbanism
High-strength and high-toughness concrete and application thereof
The invention provides high-strength and high-toughness concrete as well as a preparation method and application thereof, and relates to the technical field of concrete. The high-strength Portland cement and the gravel material with good gradation are selected, meanwhile, the high-strength steel fiber is adopted to improve the toughness of the concrete, the expanding agent compensates the shrinkage of the concrete, and through reasonable proportioning, the obtained concrete has the characteristics of high strength, good toughness, small shrinkage, convenience in construction, rapidness and high strength. Results of the embodiment show that the 24-hour compressive strength of the concrete is larger than or equal to 30 MPa; the 28d compressive strength is greater than or equal to 80MPa; the 28d bending tensile strength is greater than or equal to 8.0 MPa (a four-point bending test method is adopted); the 28d equivalent bending strength is greater than or equal to 5.0 MPa; and the restrained expansion rate is greater than or equal to-0.010%.
本发明提供了一种高强韧性混凝土及其制备方法和应用，涉及混凝土技术领域。本发明选择高强度的硅酸盐水泥，级配良好的砂石材料，同时采用高强钢纤维提高混凝土韧性，膨胀剂补偿混凝土收缩，通过合理的配比，得到的混凝土具有高强度、韧性好、收缩小、便于施工和快速高强的特点。实施例的结果表明，本发明的混凝土24h抗压强度≥30MPa；28d抗压强度≥80MPa；28d抗弯拉强度≥8.0MPa(采用四点抗弯试验方法)；28d等效抗弯强度≥5.0MPa；限制膨胀率≥‑0.010％。
High-strength and high-toughness concrete and application thereof
The invention provides high-strength and high-toughness concrete as well as a preparation method and application thereof, and relates to the technical field of concrete. The high-strength Portland cement and the gravel material with good gradation are selected, meanwhile, the high-strength steel fiber is adopted to improve the toughness of the concrete, the expanding agent compensates the shrinkage of the concrete, and through reasonable proportioning, the obtained concrete has the characteristics of high strength, good toughness, small shrinkage, convenience in construction, rapidness and high strength. Results of the embodiment show that the 24-hour compressive strength of the concrete is larger than or equal to 30 MPa; the 28d compressive strength is greater than or equal to 80MPa; the 28d bending tensile strength is greater than or equal to 8.0 MPa (a four-point bending test method is adopted); the 28d equivalent bending strength is greater than or equal to 5.0 MPa; and the restrained expansion rate is greater than or equal to-0.010%.
本发明提供了一种高强韧性混凝土及其制备方法和应用，涉及混凝土技术领域。本发明选择高强度的硅酸盐水泥，级配良好的砂石材料，同时采用高强钢纤维提高混凝土韧性，膨胀剂补偿混凝土收缩，通过合理的配比，得到的混凝土具有高强度、韧性好、收缩小、便于施工和快速高强的特点。实施例的结果表明，本发明的混凝土24h抗压强度≥30MPa；28d抗压强度≥80MPa；28d抗弯拉强度≥8.0MPa(采用四点抗弯试验方法)；28d等效抗弯强度≥5.0MPa；限制膨胀率≥‑0.010％。
High-strength and high-toughness concrete and application thereof
一种高强韧性混凝土及其应用
ZHOU RUMING (author) / ZHOU SI (author) / QI XIN (author) / LU YONGCHENG (author) / SHAO CHANGYU (author) / YAN HAI (author) / ZHANG ZHIRAN (author) / ZHOU HONGXIU (author) / ZHOU HAIFENG (author) / HAO LIZENG (author)
2023-03-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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