Rheological and mechanical properties of fibre-reinforced cemented paste and foam backfill

被引：8
|
作者：
Niu, Huiya [1 ]
Hassani, Ferri P. [3 ]
Kermani, Mehrdad F. [3 ]
He, Manchao [1 ,2 ]
机构：
[1] China Univ Min & Technol, Sch Mech & Civil Engn, Beijing, Peoples R China
[2] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Beijing, Peoples R China
[3] McGill Univ, Dept Min & Mat Engn, Montreal, PQ, Canada
来源：
INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT | 2021年 / 35卷 / 07期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Foam backfill; fibre reinforcement; rheological properties; compressive strength; deformation characteristics; failure mode;
D O I：
10.1080/17480930.2021.1883217
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The properties of fibre-reinforced cemented paste backfill (CPB) and foam backfill (FB) were investigated through bench-scale vane viscometer, mini-slump and compression tests. Samples of CPB (no air entrained) and FB (10, 20, 30, and 40% air by volume) were made with four concentrations of sisal, basalt, or Nanofibrillated cellulose fibres (0, 0.2, 0.5, and 0.8%). The results show that air entrainment decreased the unconfined compressive strength (UCS) and yield stress of FB, while the addition of the three types of fibre helped to compensate the UCS and built stronger internal bonds and sound structures, which led to different failure characteristics.
引用
收藏
页码：488 / 505
页数：18
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