Work

Enhancing dynamic mechanical properties of cemented lithium mica tailings backfill with alkaline rice straw fibers: Experimental investigation and microscopic analysis

Year: 2024

Type: article

Abstract: Cemented lithium mica tailings backfill (CLMTB) faces dynamic loads from mining operations, affecting its stability. This study investigates the use of alkaline rice straw fibers (ARSF) to enhance CLMTB's dynamic properties. Dynamic impact tests were conducted on CLMTB specimens with varying ARSF contents, revealing that dynamic compressive strength (DCS) increased with ARSF up to 0.45% before decreasing. DCS improved with rising strain rates. The research includes analyses of stress-strain behavior, failure patterns, and energy dissipation during impacts, with scanning electron microscopy revealing the microstructural effects of ARSF on CLMTB. The findings suggest that ARSF effectively mitigates the damaging impacts of loads, significantly reducing crack development in CLMTB. • The effect of strain rate on dynamic compressive strength was studied. • Failure mode and energy dissipation of CLMTB under dynamic impact were analyzed. • The microscopic mechanism of alkaline rice straw fiber on CLMTB was analyzed.

Source: Developments in the Built Environment

DOI: 10.1016/j.dibe.2024.100563

Authors: Daopei Zhu, Nanhui Huang, Quanmao Xiao, Zhangli Wang

Institutions: Jiangxi University of Science and Technology, Lanzhou Technology and Business College

Language: English

Topic: Tailings Management and Properties

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,840