Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Novel expansion filling material and preparation method thereof
The invention relates to a novel expansion filling material and a preparation method thereof, and the novel expansion filling material comprises the following main components: a cementing material, mine tailings, an expanding agent and a stabilizer, the novel expansion filling material comprises the following components in percentage by mass: 6.71%-13.65% of slag 325 # cement, 50.09%-54.58% of mine tailings, 26.84%-33.42% of filling water, 6.38%-9.64% of an expanding agent and 2.16%-3.25% of a stabilizer which is preferably methyl cellulose ether, the cementing material is preferably selected from one or more of ordinary Portland cement, Portland slag cement, Portland pozzolana cement, Portland fly ash cement and composite Portland cement. Compared with the prior art, the novel expansion filling material and the preparation method have the beneficial effects that the strength change of the novel expansion filling material is small, the phenomenon of volume instability is avoided after long-term filling, and the novel expansion filling material is used for filling a goaf with the same volume and needs less cementing materials, so that the filling cost is reduced.
本发明涉及一种新型膨胀充填材料及制备方法，新型膨胀充填材料由以下主要成份组成：胶凝材料、矿山尾砂、膨胀剂和稳定剂，所述新型膨胀充填材料具体各成分含量以及质量比为：矿渣325#水泥6.71％～13.65％、矿山尾砂50.09％～54.58％、充填用水26.84％～33.42％、膨胀剂6.38％～9.64％、稳定剂2.16％～3.25％，所述稳定剂优选为甲基纤维素醚，所述胶凝材料优选普通硅酸盐水泥、矿渣硅酸盐水泥、火山灰质硅酸盐水泥、粉煤灰硅酸盐水泥和复合硅酸盐水泥的一种或一种以上。本发明的有益效果是：该新型膨胀充填材料及制备方法，本发明的新型膨胀充填材料强度变化较小、长期充填不会发生体积失稳现象，本发明充填相同体积采空区，新型膨胀充填材料所需胶凝材料较少，充填成本降低。
Novel expansion filling material and preparation method thereof
The invention relates to a novel expansion filling material and a preparation method thereof, and the novel expansion filling material comprises the following main components: a cementing material, mine tailings, an expanding agent and a stabilizer, the novel expansion filling material comprises the following components in percentage by mass: 6.71%-13.65% of slag 325 # cement, 50.09%-54.58% of mine tailings, 26.84%-33.42% of filling water, 6.38%-9.64% of an expanding agent and 2.16%-3.25% of a stabilizer which is preferably methyl cellulose ether, the cementing material is preferably selected from one or more of ordinary Portland cement, Portland slag cement, Portland pozzolana cement, Portland fly ash cement and composite Portland cement. Compared with the prior art, the novel expansion filling material and the preparation method have the beneficial effects that the strength change of the novel expansion filling material is small, the phenomenon of volume instability is avoided after long-term filling, and the novel expansion filling material is used for filling a goaf with the same volume and needs less cementing materials, so that the filling cost is reduced.
本发明涉及一种新型膨胀充填材料及制备方法，新型膨胀充填材料由以下主要成份组成：胶凝材料、矿山尾砂、膨胀剂和稳定剂，所述新型膨胀充填材料具体各成分含量以及质量比为：矿渣325#水泥6.71％～13.65％、矿山尾砂50.09％～54.58％、充填用水26.84％～33.42％、膨胀剂6.38％～9.64％、稳定剂2.16％～3.25％，所述稳定剂优选为甲基纤维素醚，所述胶凝材料优选普通硅酸盐水泥、矿渣硅酸盐水泥、火山灰质硅酸盐水泥、粉煤灰硅酸盐水泥和复合硅酸盐水泥的一种或一种以上。本发明的有益效果是：该新型膨胀充填材料及制备方法，本发明的新型膨胀充填材料强度变化较小、长期充填不会发生体积失稳现象，本发明充填相同体积采空区，新型膨胀充填材料所需胶凝材料较少，充填成本降低。
Novel expansion filling material and preparation method thereof
一种新型膨胀充填材料及制备方法
ZHANG XIONGTIAN (Autor:in) / ZHAO ERCHENG (Autor:in) / ZHANG JUNKUI (Autor:in) / ZHU WENZHI (Autor:in) / SO SUNG-CHUL (Autor:in) / LIU JIXIANG (Autor:in)
10.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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