标题：Pore Structure Evolution and Its Effect on Strength Development of Sulfate-Containing Cemented Paste Backfill作者：Rong, H (Rong, Hao); Zhou, M (Zhou, Min); Hou, HB (Hou, Haobo)

来源出版物： MINERALS 卷：7期：1 文献编号：8 DOI：10.3390/min7010008 出版年：JAN 2017

摘要：In this study, the effects of the initial sulfate content on the properties of cemented paste backfill (CPB) made from coarse tailings has been investigated via mercury intrusion porosimetry. The combined effects of the sulfate content and curing time on the total porosity, pore size distribution, and unconfined compressive strength of the produced material were discussed. It was found that the specimens with an initial sulfate content of 5000 and 35,000 ppm exhibited higher unconfined compressive strength, while the resulting fine porous structures characterized by pore radii of 10-400 and 1-10 mu m significantly improved the mechanical properties of the CPB. In addition, an increase in the curing time decreased the overall pore volume in the radius range of 1-400 mu m but increased the pore volume at pore radii less than 1 mu m.

入藏号： WOS:000399053400007

文献类型：Article

语种：English

作者关键词： sulfate attack; mercury porosimetry; pore size distribution; hydration products; compressive strength

扩展关键词： RICH MILL TAILINGS; FLY-ASH; TEMPERATURE

通讯作者地址： Hou, HB (reprint author), Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.

Hou, HB (reprint author), Hubei Environm Remediat Mat Engn Technol Res Ctr, Wuhan 430079, Peoples R China.

电子邮件地址：ronghao2363568@sina.com; zhoumin@whu.edu.cn; hhb-bhh@163.com

地址：

[Rong, Hao; Zhou, Min; Hou, Haobo] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.

[Rong, Hao; Zhou, Min; Hou, Haobo] Hubei Environm Remediat Mat Engn Technol Res Ctr, Wuhan 430079, Peoples R China.

研究方向：Mineralogy; Mining & Mineral Processing

ISSN： 2075-163X

影响因子：1.5