Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-content iron tailing concrete
The invention belongs to the field of preparation of building materials, and particularly relates to a preparation method of high-content iron tailing concrete. The raw materials of the concrete comprise 150-240 kg/m<3> of an admixture, 200-280 kg/m<3> of cement, 140-252 kg/m<3> of natural sand, 300-420 kg/m<3> of iron tailing sand, 120-375 kg/m<3> of gravel, 875-1125 kg/m<3> of iron tailing waste rock, 150 kg/m<3> of water and 1.2% of a water reducer. According to the invention, iron tailings are adopted as main raw materials, so that a large amount of tailings are consumed, the current situation of shortage of building material resources is relieved, the use amount of the cement can be reduced by adding the admixture, and the cost is reduced; and silica fume is doped into the admixture, so that the early strength can be improved, the structure of a concrete interface transition area can be improved through secondary hydration, and the later strength is improved.
本发明属于建筑材料制备领域，特别涉及一种大掺量铁尾矿混凝土制备方法。所述混凝土的原料组成包括掺合料150‑240kg/m³、水泥200‑280kg/m³、天然砂140‑252kg/m³、铁尾矿砂300‑420kg/m³、碎石120‑375kg/m³、铁尾矿废石875‑1125kg/m³、水150kg/m³和减水剂1.2%，本发明采用铁尾矿为主要原料，大量消耗尾矿，缓解建材资源紧缺的现状，掺合料的加入可以减少水泥的使用量，降低成本，同时掺合料中掺入硅灰可提升早期强度，二次水化可改善混凝土界面过渡区结构，提高后期强度。
Preparation method of high-content iron tailing concrete
The invention belongs to the field of preparation of building materials, and particularly relates to a preparation method of high-content iron tailing concrete. The raw materials of the concrete comprise 150-240 kg/m<3> of an admixture, 200-280 kg/m<3> of cement, 140-252 kg/m<3> of natural sand, 300-420 kg/m<3> of iron tailing sand, 120-375 kg/m<3> of gravel, 875-1125 kg/m<3> of iron tailing waste rock, 150 kg/m<3> of water and 1.2% of a water reducer. According to the invention, iron tailings are adopted as main raw materials, so that a large amount of tailings are consumed, the current situation of shortage of building material resources is relieved, the use amount of the cement can be reduced by adding the admixture, and the cost is reduced; and silica fume is doped into the admixture, so that the early strength can be improved, the structure of a concrete interface transition area can be improved through secondary hydration, and the later strength is improved.
本发明属于建筑材料制备领域，特别涉及一种大掺量铁尾矿混凝土制备方法。所述混凝土的原料组成包括掺合料150‑240kg/m³、水泥200‑280kg/m³、天然砂140‑252kg/m³、铁尾矿砂300‑420kg/m³、碎石120‑375kg/m³、铁尾矿废石875‑1125kg/m³、水150kg/m³和减水剂1.2%，本发明采用铁尾矿为主要原料，大量消耗尾矿，缓解建材资源紧缺的现状，掺合料的加入可以减少水泥的使用量，降低成本，同时掺合料中掺入硅灰可提升早期强度，二次水化可改善混凝土界面过渡区结构，提高后期强度。
Preparation method of high-content iron tailing concrete
一种大掺量铁尾矿混凝土制备方法
ZHANG YANNIAN (Autor:in) / LI ZHIJUN (Autor:in) / GU XIAOWEI (Autor:in)
28.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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