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Beta gypsum-based stack-shotcrete applied to mine mining support
The invention provides beta gypsum-based stack-shotcrete applied to mine mining support, and relates to the technical field of stack-shotcrete. The beta gypsum-based stack-shotcrete is prepared from the following raw materials in parts by weight: 30 to 50 percent of beta gypsum, 10 to 20 percent of Portland cement, 5 to 15 percent of silica fume, 5 to 15 percent of fly ash, 15 to 25 percent of sand, 10 to 20 percent of stone, 5 to 25 percent of fiber filler, 1 to 5 percent of polymer, 3 to 5 percent of diatomite, 5 to 30 percent of active mineral admixture, 0.2 to 0.8 percent of modifier, 0.3 to 0.6 percent of waterproof agent, 0.6 to 1.0 percent of adhesive and 1 to 3 percent of calcium hydroxide. By containing the Portland cement, silica fume, fly ash and other components, the concrete has high strength and excellent durability, and can withstand the challenge of mine environment. And through reasonable cement proportion and stones with proper particle size, the concrete keeps good fluidity, so that the piling and spraying construction is facilitated, and the mine hole wall is effectively filled and supported. The polypropylene fibers, the glass fibers, the polyester fibers or the steel fibers are adopted, so that the crack resistance and the impact strength of the concrete are effectively enhanced.
本发明提供一种应用于矿井开采支护的贝塔石膏基堆喷混凝土，涉及堆喷混凝土技术领域。该贝塔石膏基堆喷混凝土，包括以下重量份原料：贝塔石膏30‑50％、硅酸盐水泥10‑20％、硅灰5‑15％、粉煤灰5‑15％、砂子15‑25％、石子10‑20％、纤维填料5‑25％、聚合物1‑5％、硅藻土3‑5％、活性矿物掺合料5‑30％、改性剂0.2‑0.8％、防水剂0.3‑0.6％、黏合剂0.6‑1.0％、氢氧化钙1‑3％。通过含有硅酸盐水泥、硅灰、粉煤灰等成分，混凝土具备了高强度和优良的耐久性，能够承受矿井环境的挑战。通过合理的水泥比例和粒径适宜的石子，混凝土保持良好的流动性，便于堆喷施工，有效填充和支撑矿井洞壁。采用聚丙烯纤维、玻璃纤维、聚酯纤维或钢纤维，有效增强了混凝土的抗裂性和冲击强度。
Beta gypsum-based stack-shotcrete applied to mine mining support
The invention provides beta gypsum-based stack-shotcrete applied to mine mining support, and relates to the technical field of stack-shotcrete. The beta gypsum-based stack-shotcrete is prepared from the following raw materials in parts by weight: 30 to 50 percent of beta gypsum, 10 to 20 percent of Portland cement, 5 to 15 percent of silica fume, 5 to 15 percent of fly ash, 15 to 25 percent of sand, 10 to 20 percent of stone, 5 to 25 percent of fiber filler, 1 to 5 percent of polymer, 3 to 5 percent of diatomite, 5 to 30 percent of active mineral admixture, 0.2 to 0.8 percent of modifier, 0.3 to 0.6 percent of waterproof agent, 0.6 to 1.0 percent of adhesive and 1 to 3 percent of calcium hydroxide. By containing the Portland cement, silica fume, fly ash and other components, the concrete has high strength and excellent durability, and can withstand the challenge of mine environment. And through reasonable cement proportion and stones with proper particle size, the concrete keeps good fluidity, so that the piling and spraying construction is facilitated, and the mine hole wall is effectively filled and supported. The polypropylene fibers, the glass fibers, the polyester fibers or the steel fibers are adopted, so that the crack resistance and the impact strength of the concrete are effectively enhanced.
本发明提供一种应用于矿井开采支护的贝塔石膏基堆喷混凝土，涉及堆喷混凝土技术领域。该贝塔石膏基堆喷混凝土，包括以下重量份原料：贝塔石膏30‑50％、硅酸盐水泥10‑20％、硅灰5‑15％、粉煤灰5‑15％、砂子15‑25％、石子10‑20％、纤维填料5‑25％、聚合物1‑5％、硅藻土3‑5％、活性矿物掺合料5‑30％、改性剂0.2‑0.8％、防水剂0.3‑0.6％、黏合剂0.6‑1.0％、氢氧化钙1‑3％。通过含有硅酸盐水泥、硅灰、粉煤灰等成分，混凝土具备了高强度和优良的耐久性，能够承受矿井环境的挑战。通过合理的水泥比例和粒径适宜的石子，混凝土保持良好的流动性，便于堆喷施工，有效填充和支撑矿井洞壁。采用聚丙烯纤维、玻璃纤维、聚酯纤维或钢纤维，有效增强了混凝土的抗裂性和冲击强度。
Beta gypsum-based stack-shotcrete applied to mine mining support
一种应用于矿井开采支护的贝塔石膏基堆喷混凝土
XU LINJIANG (author)
2024-12-17
Patent
Electronic Resource
Chinese
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