煤矿安全2019，Vol.50Issue(10)：71-73,78,4.DOI:10.13347/j.cnki.mkaq.2019.10.016
不同膨胀剂对复合水泥封孔材料性能的影响
Influence of Different Expansive Agents on Performance of Composite Cement Sealing Material
刘志伟1
作者信息
- 1. 中煤科工集团重庆研究院有限公司,重庆 400037
- 折叠
摘要
Abstract
A bstract: To study the effects of different expansive agents on the properties of composite cement sealing materials, the effects of different proportions of sodium bentonite and aluminum powder on the compressive strength, expansion rate and permeability of the sample were analyzed by experiments. The results showed that: the increase of sodium bentonite ratio significantly reduces the ultimate compressive strength of the sample, and the increase of aluminum powder has no obvious influence on the sample strength;with the increase of the ratio of different expansive agents, the expansion rate of the sample increased by more than three times; there is a good linear relationship between the permeability of the sample and the reciprocal of the mean pressure of the inlet and outlet gas. With the increase of the expansion agent ratio, the permeability of the material decreases first and then increases.关键词
膨胀剂/封孔材料/膨胀率/渗透率/瓦斯抽采Key words
expansive agent/sealing material/expansion rate/permeability/gas drainage分类
矿业与冶金引用本文复制引用
刘志伟..不同膨胀剂对复合水泥封孔材料性能的影响[J].煤矿安全,2019,50(10):71-73,78,4.
