A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-shrinkage mass concrete for bridge piers and abutments
The invention discloses low-shrinkage mass concrete for bridge piers and abutments. The low-shrinkage mass concrete comprises the following raw materials by weight: 250-350kg/m < 3 > of low-shrinkage low-heat Portland cement; coal ash: 50-100 kg/m < 3 >; 6-23 kg/m < 3 > of an early hardening expanding agent; gravel: 920-1120kg/m < 3 >; machine-made sand: 700-850 kg/m < 3 >; 1.0-1.5 kg/m < 3 > of a powdery polycarboxylate superplasticizer; and 130-160 kg/m < 3 > of water. According to the low-shrinkage mass concrete for the bridge pier and abutment, provided by the invention, the hydration heat and self-shrinkage of the concrete can be reduced, cracking is prevented, and the durability of the concrete is prolonged.
本发明公开了一种用于桥梁墩台的低收缩大体积混凝土，包括以下重量的原料：低收缩低热硅酸盐水泥：250～350kg/m3；粉煤灰：50～100kg/m3；早期硬化膨胀剂：6～23kg/m3；碎石：920～1120kg/m3；机制砂：700～850kg/m3；粉状聚羧酸减水剂：1.0～1.5kg/m3；水：130～160kg/m3。本发明提供的一种用于桥梁墩台的低收缩大体积混凝土，可以降低混凝土水化热、自收缩，防止开裂，延长混凝土耐久性。
Low-shrinkage mass concrete for bridge piers and abutments
The invention discloses low-shrinkage mass concrete for bridge piers and abutments. The low-shrinkage mass concrete comprises the following raw materials by weight: 250-350kg/m < 3 > of low-shrinkage low-heat Portland cement; coal ash: 50-100 kg/m < 3 >; 6-23 kg/m < 3 > of an early hardening expanding agent; gravel: 920-1120kg/m < 3 >; machine-made sand: 700-850 kg/m < 3 >; 1.0-1.5 kg/m < 3 > of a powdery polycarboxylate superplasticizer; and 130-160 kg/m < 3 > of water. According to the low-shrinkage mass concrete for the bridge pier and abutment, provided by the invention, the hydration heat and self-shrinkage of the concrete can be reduced, cracking is prevented, and the durability of the concrete is prolonged.
本发明公开了一种用于桥梁墩台的低收缩大体积混凝土，包括以下重量的原料：低收缩低热硅酸盐水泥：250～350kg/m3；粉煤灰：50～100kg/m3；早期硬化膨胀剂：6～23kg/m3；碎石：920～1120kg/m3；机制砂：700～850kg/m3；粉状聚羧酸减水剂：1.0～1.5kg/m3；水：130～160kg/m3。本发明提供的一种用于桥梁墩台的低收缩大体积混凝土，可以降低混凝土水化热、自收缩，防止开裂，延长混凝土耐久性。
Low-shrinkage mass concrete for bridge piers and abutments
一种用于桥梁墩台的低收缩大体积混凝土
CHONG NA (author) / ZHONG WEN (author) / XU YIGANG (author) / XIA YANQING (author) / WANG NING (author)
2024-11-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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