Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mining low-heat rapid-bearing spraying support material as well as preparation method and application thereof
The invention relates to a mining low-heat rapid-bearing spraying support material as well as a preparation method and application thereof. The mining low-heat rapid-bearing spraying support material is prepared from the following raw materials in parts by weight: 50-70 parts of early strength cement, 25-35 parts of aggregate, 0.1-0.5 part of a retarder, 0.5-1 part of an interference agent, 5-10 parts of a heat conduction agent, 10-15 parts of a binder, 5-10 parts of an admixture, 0.1-0.3 part of fiber and 35-60 parts of water. When the spraying thickness is 5 cm, the temperature peak value is lower than 60 DEG C, generation of temperature cracks is avoided, the compressive strength reaches 10 MPa in early 2 h, the compressive strength reaches 15 MPa in 4 h, the material has low-heat and early-strength performance indexes, meanwhile, the material does not rebound in the spraying process and is high in binding force, application of the supporting material in roadways is improved, and the supporting material is suitable for being applied to the roadways. The method has important practical significance.
本发明涉及一种矿用低热快速承载喷涂支护材料及其制备方法与应用，矿用低热快速承载喷涂支护材料由如下重量份数的原料制成：早强型水泥50‑70份，骨料25‑35份，缓凝剂0.1‑0.5份，干扰剂0.5‑1份，导热剂5‑10份，粘结剂10‑15份，掺合料5‑10份，纤维0.1‑0.3份，水35‑60份；矿用低热快速承载喷涂支护材料在喷射厚度5cm时，温度峰值低于60℃，避免温度裂缝的产生，且早期2h抗压强度达到10MPa，4h抗压强度达到15MPa，兼具低热与早强的性能指标，同时材料在喷射过程中无回弹现象，粘结力高，改善了支护材料在巷道中的应用，具有重要的现实意义。
Mining low-heat rapid-bearing spraying support material as well as preparation method and application thereof
The invention relates to a mining low-heat rapid-bearing spraying support material as well as a preparation method and application thereof. The mining low-heat rapid-bearing spraying support material is prepared from the following raw materials in parts by weight: 50-70 parts of early strength cement, 25-35 parts of aggregate, 0.1-0.5 part of a retarder, 0.5-1 part of an interference agent, 5-10 parts of a heat conduction agent, 10-15 parts of a binder, 5-10 parts of an admixture, 0.1-0.3 part of fiber and 35-60 parts of water. When the spraying thickness is 5 cm, the temperature peak value is lower than 60 DEG C, generation of temperature cracks is avoided, the compressive strength reaches 10 MPa in early 2 h, the compressive strength reaches 15 MPa in 4 h, the material has low-heat and early-strength performance indexes, meanwhile, the material does not rebound in the spraying process and is high in binding force, application of the supporting material in roadways is improved, and the supporting material is suitable for being applied to the roadways. The method has important practical significance.
本发明涉及一种矿用低热快速承载喷涂支护材料及其制备方法与应用，矿用低热快速承载喷涂支护材料由如下重量份数的原料制成：早强型水泥50‑70份，骨料25‑35份，缓凝剂0.1‑0.5份，干扰剂0.5‑1份，导热剂5‑10份，粘结剂10‑15份，掺合料5‑10份，纤维0.1‑0.3份，水35‑60份；矿用低热快速承载喷涂支护材料在喷射厚度5cm时，温度峰值低于60℃，避免温度裂缝的产生，且早期2h抗压强度达到10MPa，4h抗压强度达到15MPa，兼具低热与早强的性能指标，同时材料在喷射过程中无回弹现象，粘结力高，改善了支护材料在巷道中的应用，具有重要的现实意义。
Mining low-heat rapid-bearing spraying support material as well as preparation method and application thereof
一种矿用低热快速承载喷涂支护材料及其制备方法与应用
DING XIAOJIE (Autor:in) / WU JIANSHENG (Autor:in) / LIU JUNYUAN (Autor:in) / WANG WENJING (Autor:in) / LI YAJUN (Autor:in)
29.08.2023
Patent
Elektronische Ressource
Chinesisch
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