A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-crack-resistance ultrahigh-performance concrete and preparation method thereof
The invention discloses high-crack-resistance ultrahigh-performance concrete and a preparation method thereof, and relates to the technical field of building materials. The concrete is prepared from the following components in parts by weight: 100 to 300 parts of tailing powder, 100 to 250 parts of natural tuff, 100 to 200 parts of limestone powder, 100 to 300 parts of fly ash, 400 to 800 parts of cement, 100 to 200 parts of silica fume, 900 to 1200 parts of fine aggregate, 120 to 320 parts of steel fiber, 10 to 100 parts of xonotlite fiber, 1 to 10 parts of carbon nano tube, 8 to 10 parts of additive and 160 to 190 parts of water. According to the invention, the chemical component characteristics of the natural tuff and the tailing powder are adopted, and the activity of the natural tuff and the expansion component in the tailing powder are fully utilized to reduce shrinkage; the toughness of the ultra-high performance concrete is integrally improved by using multi-scale fibers, so that the anti-cracking performance of the ultra-high performance concrete is greatly improved.
本发明公开了一种高抗裂超高性能混凝土及其制备方法，涉及建筑材料技术领域；其包括按重量份数计的以下组分：尾矿粉100～300份、天然凝灰岩100～250份、石灰石粉100～200份、粉煤灰100～300份、水泥400～800份、硅灰100～200份、细骨料900～1200份、钢纤维120～320份、硬硅钙石纤维10～100份、碳纳米管1～10份、外加剂8～10份和水160～190份。本发明采用天然凝灰岩和尾矿粉的化学组分特点，充分的利用天然凝灰岩的活性和尾矿粉中的膨胀组分来降低收缩；本发明还使用多尺度纤维整体提高超高性能混凝土的韧性，从而大幅提高超高性能混凝土的抗裂性能。
High-crack-resistance ultrahigh-performance concrete and preparation method thereof
The invention discloses high-crack-resistance ultrahigh-performance concrete and a preparation method thereof, and relates to the technical field of building materials. The concrete is prepared from the following components in parts by weight: 100 to 300 parts of tailing powder, 100 to 250 parts of natural tuff, 100 to 200 parts of limestone powder, 100 to 300 parts of fly ash, 400 to 800 parts of cement, 100 to 200 parts of silica fume, 900 to 1200 parts of fine aggregate, 120 to 320 parts of steel fiber, 10 to 100 parts of xonotlite fiber, 1 to 10 parts of carbon nano tube, 8 to 10 parts of additive and 160 to 190 parts of water. According to the invention, the chemical component characteristics of the natural tuff and the tailing powder are adopted, and the activity of the natural tuff and the expansion component in the tailing powder are fully utilized to reduce shrinkage; the toughness of the ultra-high performance concrete is integrally improved by using multi-scale fibers, so that the anti-cracking performance of the ultra-high performance concrete is greatly improved.
本发明公开了一种高抗裂超高性能混凝土及其制备方法，涉及建筑材料技术领域；其包括按重量份数计的以下组分：尾矿粉100～300份、天然凝灰岩100～250份、石灰石粉100～200份、粉煤灰100～300份、水泥400～800份、硅灰100～200份、细骨料900～1200份、钢纤维120～320份、硬硅钙石纤维10～100份、碳纳米管1～10份、外加剂8～10份和水160～190份。本发明采用天然凝灰岩和尾矿粉的化学组分特点，充分的利用天然凝灰岩的活性和尾矿粉中的膨胀组分来降低收缩；本发明还使用多尺度纤维整体提高超高性能混凝土的韧性，从而大幅提高超高性能混凝土的抗裂性能。
High-crack-resistance ultrahigh-performance concrete and preparation method thereof
一种高抗裂超高性能混凝土及其制备方法
2024-02-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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