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Pump concrete doped with gold mine tailings and application of pump concrete
The invention belongs to the field of solid waste utilization, and particularly relates to pump concrete doped with gold mine tailings and application of the pump concrete. The pump concrete is prepared from the following raw materials: 260 to 450 kg/m < 3 > of cement, 19.6 to 31.5 kg/m < 3 > of silica fume, 1000 to 1415 kg/m < 3 > of pebbles, 2.5 to 13.5 kg/m < 3 > of a polycarboxylic acid water reducing agent, 200 to 260 kg/m < 3 > of water and 640 to 800 kg/m < 3 > of mixed sand, wherein the mixed sand comprises gold mine tailings and limestone machine-made sand. According to the pump concrete disclosed by the invention, the doping amount of the gold mine tailings can be up to 18% at most, so that not only is a large amount of accumulated gold mine tailings effectively consumed, but also the problem of current river sand resource shortage is relieved to a certain extent. In addition, the mixed sand prepared from the gold mine tailings and the limestone machine-made sand can enable the workability of the concrete to meet the requirement, the concrete is easy to pump and construct, the compactness of the concrete is improved, voids and pitted surfaces in the pouring process can be reduced, and the quality of the concrete is improved.
本发明属于固体废物利用领域，具体涉及一种掺加金矿尾矿的泵送混凝土及其应用。所述泵送混凝土的原料包括：水泥260‑450kg/m3、硅灰19.6‑31.5kg/m3、石子1000‑1415kg/m3、聚羧酸减水剂2.5‑13.5kg/m3、水200‑260kg/m3以及混合砂640‑800kg/m3，所述混合砂包括金矿尾矿和石灰石机制砂。本发明的泵送混凝土，金矿尾矿掺加量最高可达18％，不仅有效消耗了大量堆积的金矿尾矿，还在一定程度上缓解了目前河砂资源紧缺的问题。此外，以金矿尾矿及石灰石机制砂配制的混合砂能使混凝土的和易性满足要求，易于泵送施工，且混凝土的密实性得到增加，能够减少浇注过程中的蜂窝麻面，提高了混凝土的质量。
Pump concrete doped with gold mine tailings and application of pump concrete
The invention belongs to the field of solid waste utilization, and particularly relates to pump concrete doped with gold mine tailings and application of the pump concrete. The pump concrete is prepared from the following raw materials: 260 to 450 kg/m < 3 > of cement, 19.6 to 31.5 kg/m < 3 > of silica fume, 1000 to 1415 kg/m < 3 > of pebbles, 2.5 to 13.5 kg/m < 3 > of a polycarboxylic acid water reducing agent, 200 to 260 kg/m < 3 > of water and 640 to 800 kg/m < 3 > of mixed sand, wherein the mixed sand comprises gold mine tailings and limestone machine-made sand. According to the pump concrete disclosed by the invention, the doping amount of the gold mine tailings can be up to 18% at most, so that not only is a large amount of accumulated gold mine tailings effectively consumed, but also the problem of current river sand resource shortage is relieved to a certain extent. In addition, the mixed sand prepared from the gold mine tailings and the limestone machine-made sand can enable the workability of the concrete to meet the requirement, the concrete is easy to pump and construct, the compactness of the concrete is improved, voids and pitted surfaces in the pouring process can be reduced, and the quality of the concrete is improved.
本发明属于固体废物利用领域，具体涉及一种掺加金矿尾矿的泵送混凝土及其应用。所述泵送混凝土的原料包括：水泥260‑450kg/m3、硅灰19.6‑31.5kg/m3、石子1000‑1415kg/m3、聚羧酸减水剂2.5‑13.5kg/m3、水200‑260kg/m3以及混合砂640‑800kg/m3，所述混合砂包括金矿尾矿和石灰石机制砂。本发明的泵送混凝土，金矿尾矿掺加量最高可达18％，不仅有效消耗了大量堆积的金矿尾矿，还在一定程度上缓解了目前河砂资源紧缺的问题。此外，以金矿尾矿及石灰石机制砂配制的混合砂能使混凝土的和易性满足要求，易于泵送施工，且混凝土的密实性得到增加，能够减少浇注过程中的蜂窝麻面，提高了混凝土的质量。
Pump concrete doped with gold mine tailings and application of pump concrete
一种掺加金矿尾矿的泵送混凝土及其应用
FU XIAOJIE (author) / YIN DAXIANG (author) / WANG BO (author) / YE YUEZHONG (author) / TIAN YE (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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