Effects of Superfine Cement on Fluidity, Strength, and Pore Structure of Superfine Tailings Cemented Paste Backfill DOI Open Access
Kunlei Zhu, Haijun Wang,

Xulin Zhao

et al.

Minerals, Journal Year: 2024, Volume and Issue: 15(1), P. 24 - 24

Published: Dec. 27, 2024

Advancements in mine tailings treatment technology have increased the use of superfine tailings, but their extremely fine particle size and high specific surface area limit performance cemented paste backfill (STCPB). This study investigates effects using cement as a binder to enhance fluidity, strength, pore structure STCPB. The influence water film thickness (WFT) on STCPB is also examined. results show that cement-to-tailings ratio (CTR) solid content (SC) significantly affect spread diameter (SD) unconfined compressive strength (UCS), following distinct linear/logarithmic exponential trends, respectively. WFT has an impact SD non-linear effect UCS, enhancing at low levels (0 μm < 0.0071 μm) balancing hydration flowability moderate (0.0071 0.0193 reducing (WFT > μm). Additionally, improves by porosity macropore content. These findings provide valuable insights into optimizing for enhanced sustainability backfilling applications.

Language: Английский

Visualization and quantification of pore structure in cement tailings waste rock composites using X-ray computed tomography and deep learning DOI
Jiajian Li, Shuai Cao,

Weidong Song

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 476, P. 141341 - 141341

Published: April 15, 2025

Language: Английский

Citations

0
Effects of Superfine Cement on Fluidity, Strength, and Pore Structure of Superfine Tailings Cemented Paste Backfill DOI Open Access
Kunlei Zhu, Haijun Wang,

Xulin Zhao

et al.

Minerals, Journal Year: 2024, Volume and Issue: 15(1), P. 24 - 24

Published: Dec. 27, 2024

Advancements in mine tailings treatment technology have increased the use of superfine tailings, but their extremely fine particle size and high specific surface area limit performance cemented paste backfill (STCPB). This study investigates effects using cement as a binder to enhance fluidity, strength, pore structure STCPB. The influence water film thickness (WFT) on STCPB is also examined. results show that cement-to-tailings ratio (CTR) solid content (SC) significantly affect spread diameter (SD) unconfined compressive strength (UCS), following distinct linear/logarithmic exponential trends, respectively. WFT has an impact SD non-linear effect UCS, enhancing at low levels (0 μm < 0.0071 μm) balancing hydration flowability moderate (0.0071 0.0193 reducing (WFT > μm). Additionally, improves by porosity macropore content. These findings provide valuable insights into optimizing for enhanced sustainability backfilling applications.

Language: Английский

Citations

2