A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ultra-high performance concrete for paving orthogonal special-shaped steel bridge deck
The invention discloses ultra-high performance concrete for paving an orthogonal special-shaped steel bridge deck. The ultra-high performance concrete is prepared from the following raw materials in parts by weight: 500 to 1000 parts of cement, 250 to 300 parts of mineral admixture, 1100 to 1200 parts of quartz sand, 100 to 200 parts of high-thixotropy modified nano calcium carbonate, 10 to 30 parts of a thixotropic agent, 100 to 250 parts of copper-plated micro steel fiber, 20 to 30 parts of a polycarboxylic acid type water reducing agent and 150 to 250 parts of clean water. The purpose of adopting the modified high-thixotropy nano calcium carbonate is as follows: the ultra-high performance concrete can fill gaps between cement and an admixture through the nano calcium carbonate on the basis of the principle of closest particle packing, replace free water in a glue material system, reduce the thickness of a water film, reduce the viscosity of UHPC slurry, improve the compactness of a matrix and increase the strength at the same time.
本发明公开了一种正交异形钢桥面铺装用超高性能混凝土，它的原料按重量份数比计包括水泥500～1000份、矿物掺和料250～300份、石英砂1100～1200份、高触变性改性纳米碳酸钙100～200份、触变剂10～30份、镀铜微钢纤维100～250份，聚羧酸系减水剂20～30份以及洁净水150～250份。本发明采用改性高触变性纳米碳酸钙的目的在于：超高性能混凝土基于颗粒最紧密堆积原理，通过纳米碳酸钙，能够填充水泥和掺合料的间隙，置换出胶材体系中的自由水，降低水膜厚度，是UHPC浆体粘度降低，同时提高基体的密实度，增加强度。
Ultra-high performance concrete for paving orthogonal special-shaped steel bridge deck
The invention discloses ultra-high performance concrete for paving an orthogonal special-shaped steel bridge deck. The ultra-high performance concrete is prepared from the following raw materials in parts by weight: 500 to 1000 parts of cement, 250 to 300 parts of mineral admixture, 1100 to 1200 parts of quartz sand, 100 to 200 parts of high-thixotropy modified nano calcium carbonate, 10 to 30 parts of a thixotropic agent, 100 to 250 parts of copper-plated micro steel fiber, 20 to 30 parts of a polycarboxylic acid type water reducing agent and 150 to 250 parts of clean water. The purpose of adopting the modified high-thixotropy nano calcium carbonate is as follows: the ultra-high performance concrete can fill gaps between cement and an admixture through the nano calcium carbonate on the basis of the principle of closest particle packing, replace free water in a glue material system, reduce the thickness of a water film, reduce the viscosity of UHPC slurry, improve the compactness of a matrix and increase the strength at the same time.
本发明公开了一种正交异形钢桥面铺装用超高性能混凝土，它的原料按重量份数比计包括水泥500～1000份、矿物掺和料250～300份、石英砂1100～1200份、高触变性改性纳米碳酸钙100～200份、触变剂10～30份、镀铜微钢纤维100～250份，聚羧酸系减水剂20～30份以及洁净水150～250份。本发明采用改性高触变性纳米碳酸钙的目的在于：超高性能混凝土基于颗粒最紧密堆积原理，通过纳米碳酸钙，能够填充水泥和掺合料的间隙，置换出胶材体系中的自由水，降低水膜厚度，是UHPC浆体粘度降低，同时提高基体的密实度，增加强度。
Ultra-high performance concrete for paving orthogonal special-shaped steel bridge deck
正交异形钢桥面铺装用超高性能混凝土
JIANG BIN (author) / HUANG ZHENGQIANG (author) / QUAN GUOXING (author) / PAN XINGLIANG (author) / WANG LI (author) / ZHOU JUN (author) / LIU TAO (author) / ZHANG BIN (author) / ZHANG XIN (author)
2021-09-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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