Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Slag filling material and application thereof
The invention provides a slag filling material and application thereof, and belongs to the technical field of slag filling materials. The slag filling material provided by the invention comprises the following raw materials: tailings, slag, water and an alkali activator, the alkali activator comprises sodium carbonate and calcium hydroxide or carbide slag. According to the invention, sodium carbonate and calcium hydroxide or carbide slag are used as the composite alkali activator, on one hand, the calcium hydroxide or carbide slag is added to reduce the concentration of slag and tailings, and water is consumed in the reaction process, so that the water-cement ratio of the filling material is reduced, and the mechanical properties of the filling material are improved; on the other hand, the concentration of calcium ions in a reaction system is increased by adding the calcium hydroxide or the carbide slag, so that the Ca/Si ratio of the hydrated calcium silicate gel is increased, the mechanical property of the filling material is improved, meanwhile, the porosity of the filling material is reduced by calcium carbonate formed by the reaction, and the mechanical property of the filling material is further improved.
本发明提供了一种矿渣充填材料及其应用，属于矿渣充填材料技术领域。本发明提供的矿渣充填材料包括如下原料：尾砂、矿渣、水和碱激发剂；所述碱激发剂包括碳酸钠以及氢氧化钙或电石渣。本发明采用碳酸钠以及氢氧化钙或电石渣作为复合碱激发剂，一方面氢氧化钙或电石渣的加入使得矿渣和尾砂的浓度减少，同时在反应过程中消耗水，使得充填材料的水灰比下降，提高充填材料的力学性能；另一方面，氢氧化钙或电石渣的加入增加了反应体系中钙离子的浓度，从而提高水化硅酸钙凝胶的Ca/Si比，提高充填材料的力学性能，同时反应形成的碳酸钙有助于降低充填材料的孔隙率，进一步提高充填材料的力学性能。
Slag filling material and application thereof
The invention provides a slag filling material and application thereof, and belongs to the technical field of slag filling materials. The slag filling material provided by the invention comprises the following raw materials: tailings, slag, water and an alkali activator, the alkali activator comprises sodium carbonate and calcium hydroxide or carbide slag. According to the invention, sodium carbonate and calcium hydroxide or carbide slag are used as the composite alkali activator, on one hand, the calcium hydroxide or carbide slag is added to reduce the concentration of slag and tailings, and water is consumed in the reaction process, so that the water-cement ratio of the filling material is reduced, and the mechanical properties of the filling material are improved; on the other hand, the concentration of calcium ions in a reaction system is increased by adding the calcium hydroxide or the carbide slag, so that the Ca/Si ratio of the hydrated calcium silicate gel is increased, the mechanical property of the filling material is improved, meanwhile, the porosity of the filling material is reduced by calcium carbonate formed by the reaction, and the mechanical property of the filling material is further improved.
本发明提供了一种矿渣充填材料及其应用，属于矿渣充填材料技术领域。本发明提供的矿渣充填材料包括如下原料：尾砂、矿渣、水和碱激发剂；所述碱激发剂包括碳酸钠以及氢氧化钙或电石渣。本发明采用碳酸钠以及氢氧化钙或电石渣作为复合碱激发剂，一方面氢氧化钙或电石渣的加入使得矿渣和尾砂的浓度减少，同时在反应过程中消耗水，使得充填材料的水灰比下降，提高充填材料的力学性能；另一方面，氢氧化钙或电石渣的加入增加了反应体系中钙离子的浓度，从而提高水化硅酸钙凝胶的Ca/Si比，提高充填材料的力学性能，同时反应形成的碳酸钙有助于降低充填材料的孔隙率，进一步提高充填材料的力学性能。
Slag filling material and application thereof
一种矿渣充填材料及其应用
KONG SHAOQI (Autor:in) / GUO JIADONG (Autor:in) / LI GUILIN (Autor:in) / XIA HAOJIE (Autor:in) / REN KAI (Autor:in) / DONG KUI (Autor:in)
10.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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