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激发药剂在矿渣基胶结材料中速凝早强机理试验研究
- 王丽媛|童川|谭玉叶|李伟明
- 作者单位：
- 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|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|北京科技大学土木与资源工程学院|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
基金项目：
- 国家重点研发计划项目（2018YFC0604602）
详细信息：
- 作者简介：
- 王丽媛（1986—），女，讲师，从事充填采矿工程和应用化学方向的研究工作；E-mail：liyuan0421@126.com
- 通讯作者：
- 童川（1986—），男，高级工程师，从事金属矿山开采工作；E-mail：tongchuan@sd-gold.com
- PDF下载
Experimental study on the mechanism of rapid setting and early strength development of activating agents in ore residue-based cementitious materials
- English Author：
- Department of Environmental and Materials Engineering,Yan Tai Gold College&School of Civil and Resource Engineering,University of Science and Technology Beijing|School of Civil and Resource Engineering,University of Science and Technology Beijing&Jiaojia Gold Mine,Shandong Gold Mining Industry (Laizhou) Co.,Ltd.|School of Civil and Resource Engineering,University of Science and Technology Beijing|School of Civil and Resource Engineering,University of Science and Technology Beijing&Jiaojia Gold Mine,Shandong Gold Mining Industry (Laizhou) Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
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。
关键词:
激发药剂；胶结料；矿渣；早期强度；速凝；充填体
Abstract:
This study investigates the early strength development and rapid setting effects of 4 inorganic salt activating 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 % addition shows the most significant effect on later strength development,with water glass performing the poorest.Considering 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.
Keywords:
activating agents;cementitious materials;ore residue;early strength;rapid setting;backfill body
