Results 21 to 30 of about 16,249 (265)

Faro Waste Rock Project: Characterizing geochemical heterogeneity in sulfide- and carbonate-rich waste rock

Applied Geochemistry, 2020
Abstract Sustained oxidation of sulfide minerals in waste rock generates acid mine drainage for time frames of hundreds to thousands of years. Management to minimize long-term degradation of water supplies and ecosystem health requires a thorough understanding of geochemical processes occurring within the waste rock.
Zhongwen Bao, Jeff Bain, Steven P. Holland, David Wilson, Peter MacKenzie, Carol J. Ptacek, David W. Blowes   +6 more
openaire   +1 more source

Muti-scale analysis of solidification/stabilization (S/S) of Pb-contaminated dredged sediment using nano-SiO2 modified cement

Journal of Rock Mechanics and Geotechnical Engineering
The remediation of lead-contaminated dredged sediments (LDS) presents significant environmental challenges. This study investigates the solidification/stabilization (S/S) mechanisms of ordinary Portland cement (OPC) modified with nano-silica (NS) across ...
Wei Zhang, Lei Lang, Zhen Qi, Yao-Yi Wang, Qiang Xue, Jiang-Shan Li   +5 more
doaj   +1 more source

Anisotropic thermal properties of an argillaceous rock under elevated temperatures and external load conditions

Case Studies in Thermal Engineering, 2023
The design and long-term safety of geological repositories for high-level radioactive waste (HLW) are dependent on the precise determination of the thermophysical parameters of mudstone.
Hongdan Yu, Chen Lu, Wei Liu, Weizhong Chen, Honghui Li, Jiawei Huang   +5 more
doaj   +1 more source

Ceramic products obtained from rock wastes [PDF]

Journal of Materials Processing Technology, 2003
Abstract Residue powders resulting from cutting and machining operations in slate quarries were processed by a press and sintering route to manufacture ceramic products such as flooring and roofing tiles. The first part of this work consisted of a laboratory study carried out by uniaxially pressing the powders to shape and sintering in air using a ...
Catarino, L., Sousa, J., Martins, I. M., Vieira, M. T., Oliveira, M. M.   +4 more
openaire   +2 more sources

Grain size distribution of waste rock masses of Kuzbass coal strip mines

Горные науки и технологии, 2021
Grain size distribution as a structural characteristic of waste rock and bulk masses in the course of mining and construction works acquires quantitative values in the process of rock blasting and hauling of rock mass.
Sergey O. Markov, Elena V. Murko, Fedor S. Nepsha   +2 more
doaj   +1 more source

Experimental study on deformation and failure of cemented filling body in open-pit end slope under different loading rates

Meikuang Anquan, 2022
In order to reveal the influence of loading rate on the deformation and failure of cemented waste rock filling body, uniaxial compression tests of cemented waste rock filling body under five groups of loading rates were carried out, and the changes of ...
LI Qiang, CHEN Yanlong, XU Kun, LYU Haoyan, XIE Qihang, CHEN Yuanguang, GU Jun   +6 more
doaj   +1 more source

Effect of Cyclic Lateral Loading on the Compaction Behaviour of Waste Rock Backfill Materials in Coal Mines

Energies, 2018
Crushed waste rock (CWR) can be used as backfill for goafs allowing disposal of solid waste and control of surface subsidence. Waste rocks for backfilling (WRBs) have a certain density before use if cyclic lateral loads are applied to CWRs, therefore, by
Meng Li, Jixiong Zhang, Baifu An, Deon M. Germain, Qianqian Xu   +4 more
doaj   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

Advanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel, German Montes‐Hernández, Pablo Almarza‐Cifuentes, Matthias Kellermeier, Alexander E.S. Van Driessche   +4 more
wiley   +1 more source

The influence of tailings concentration and waste rock medium length on horizontal seepage deformation

Frontiers in Earth Science
The technique of storing tailings with a waste rock embankment network integrates the high waste dumping site and high tailings pond engineering into one, effectively reducing the construction footprint.
Mingqiang Sheng, Min Ouyang, Jiayu Xu, Sijun Wang, Zhicong Lei, Xinxin Liu   +5 more
doaj   +1 more source