激发药剂在矿渣基胶结材料中速凝早强机理试验研究

Experimental study on the mechanism of rapid setting and early strength development of activating agents in ore residue-based cementitious materials

王丽媛 ¹童川 ²谭玉叶 ³李伟明²

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作者信息

1. 烟台黄金职业学院环境与材料工程系;北京科技大学土木与资源工程学院
2. 北京科技大学土木与资源工程学院;山东黄金矿业(莱州)有限公司焦家金矿
3. 北京科技大学土木与资源工程学院
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摘要

以尾砂、矿渣基胶结材料为原材料,研究水玻璃、NaOH、Na2SO4、Al2(SO4)3 4 种无机盐激发药剂在不同掺量下的速凝早强效果,并解释其早强机理.研究发现:4 种激发药剂在一定的添加范围内,充填体试块的抗压强度随龄期的增长而增大.掺量0.5%的NaOH早强效果最好,掺量1.0%的Na2SO4 效果次之,掺量0.5%的Al2(SO4)3 对后期强度增长作用最明显,水玻璃效果最差.同时考虑到实用性、经济性,复合使用Na2SO4 和Al2(SO4)3 添加到尾砂胶结充填体试块中,综合性能较好.研究结果可有效提高充填体早期强度,为矿山进行充填体结构及强度优化设计提供科学参考依据.

Abstract

This study investigates the early strength development and rapid setting effects of 4 inorganic salt acti-vating agents,namely water glass,NaOH,Na2SO4,and Al2(SO4)3,at different dosages in tailings and ore residue-based cementitious materials,elucidating their mechanisms.Results show that within a certain range of addition,the compressive strength of the filling specimens increases with age for all 4 activating agents.NaOH at a addition of 0.5%exhibits the best early strength development,followed by Na2SO4 at 1.0%addition,while Al2(SO4)3 at 0.5%addi-tion shows the most significant effect on later strength development,with water glass performing the poorest.Consider-ing practicality and economy,the composite use of Na2SO4 and Al2(SO4)3 added to tailings-based cementitious filling specimens demonstrates superior comprehensive performance.These findings effectively enhance the early strength of backfill body,providing scientific references for optimizing the structure and strength of backfill body in mines.

关键词

激发药剂/胶结料/矿渣/早期强度/速凝/充填体

Key words

activating agents/cementitious materials/ore residue/early strength/rapid setting/backfill body

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基金项目

国家重点研发计划(2018YFC0604602)

出版年

2024

黄金

长春黄金研究院

黄金

CSTPCD

影响因子：0.446

ISSN：1001-1277

参考文献量20

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