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The reuse of mining and construction waste for backfill as one of the sustainable activities. Alexander L. Ivannikov 1, Cheynesh Kongar-Syuryun 1, Jaroslaw Rybak 2 and Yulia Tyulyaeva 3. Published under licence by IOP Publishing Ltd
Today, backfilling mining methods play an important role in the preservation of the environment during the recycling of various industrial wastes, such as tailings, slag, and fly ash [15], [51], [52].Due to the limited requirements for strength and stability of most backfill materials in underground backfilling mining technologies [15], utilizing CDW as …
Utilisation of construction and demolition waste as cemented paste backfill material for underground mine openings ... is an emerging mine-backfill technique that allows environmentally hazardous tailings returning back to the underground openings or stopes, thereby maximizing the safety, efficiency and productivity of process/operation ...
The emergence of waste backfill was initially proposed for waste management in the 1930s. ... improving the recovery ratio; (Ⅴ) ensuring the safety of mine workers; and (Ⅵ) serving as a platform for heavy ... crushed gangue, sand and even crushed construction waste are used as aggregates to produce CPB (Deng et al., …
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The resource exploitation of solid waste can be possible if steel slag can be used in pit sidewall backfill. It can be challenging to backfill and compact in layers [1], especially when backfilling pit sidewalls, because certain deep pit backfilling projects have limited working surfaces that prevent the use of heavy mechanical equipment ...
III. Materials. Measuring Tape Spray Paints Steel Pegs/Pins Approved Structural earth fill to be used as backfill Approval of backfilling material will be received before using it on-site. Warning/Identification Tape: Standard 4 mil polyethylene 76mm (3 inches) wide tape, detectable type, with an appropriate color suitable for utility imprinted with information …
ABSTRACT: Geosynthetic reinforced soil walls are now an accepted technology for the solution of earth-retaining problems due to cost savings, easy and quick construction, and associated environmental benefits. Additional savings and reduction in environmental impact can be realised by using recycled construction and demolition …
The application of construction waste as an aggregate in subgrade backfilling is an important recycling option. This study analyzed a subgrade backfill material consisting of lime-fly ash ...
Given the high transportation cost and limited market price of recycled products, in many cases the construction solid or sludge wastes have to be dumped to low-lying land and ponds or used as backfill material in roads, backfill of piles or offshore reclamations (Ravi and Rao Citation 2013; Xu et al. Citation 2019b; Iyer et al. Citation …
To investigate the effect of waste rock aggregate content (V a) on the flexural fracture behavior of CWTB, five different groups of waste rock aggregate content were set up, namely 10, 20, 30, 40, and 50 %.Aggregate-free cemented tailing backfill was used as the control group. It should be noted that V a refers to the ratio of the mass of …
This technology can curb the hazards of goaf and tailings ponds at the source. It embodies the principle of "one waste cures two hazards" and maximizes the resource utilization of tailings as solid waste [8]. As such, it has become an important technical support for large-scale, green, and efficient mining of mineral resources, …
In this study, two types of cemented tailings backfill (CTB) were prepared by breaking up the waste clay bricks (WCB) from dismantled buildings and replacing part of the cement with brick powder and part of the tailings with brick aggregate. The mechanical properties of the modified CTB were investigated. The results showed that the strength …
In rapid urbanization, the construction of mechanically stabilized earthen (MSE) walls has found its inevitable part for which the natural backfill material is becoming scarce. Urbanization can itself answer this problem of scarcity if proper utilization of construction and demolition waste (CDW) is made possible. Proper detailed …
Although sands are considered as the most suitable backfill material for retaining walls due to their high permeability, currently the scarcity of this natural material has raised serious environmental concerns.
Environmental behavior of construction and demolition waste as recycled aggregates for backfilling in mines: Leaching toxicity and surface subsidence studies ... and it should be noted that the CDW is not hazardous by default, but the CBCW is completely buried inside the gobs, when there is a large amount of groundwater in the …
Materials 2021, 14, 2381 3 of 15 of concrete blocks, bricks, and stones, with particle sizes between 2 and 5 mm. Samples of these materials are shown in Figure1. Table 1.
This is a common practice in construction and—the main focus of this guide—in the mining industry. ... Using mining backfill can also be a way to dispose of potentially hazardous waste and reduce the environmental impact on the surface by storing backfill waste underground.
1. Introduction. Over 10 billion tons of construction and demolition waste are generated annually (Wang et al., 2019), with China being the biggest producer (over 2 billion tons) (Zheng et al., 2017), followed by Europe (858 million tons) and the US (534 million tons) (Rosado et al., 2019).Construction and demolition is estimated to account …
Underground infrastructure projects pose significant environmental risks due to resource consumption, ground stability issues, and potential ecological damage. This review explores sustainable practices for mitigating these impacts throughout the lifecycle of underground construction projects, focusing on recycling and reusing excavated tunnel …
India requires a large landfill area for the disposal of construction and demolition waste (C&DW) generated during maintenance, renovation, or destruction of different structures. India produces millions of tonnes of C&DW and the capacity for recycling is less than 2 percent. As a result, India must establish a strategy for reducing, …
In summary, backfill is the process of filling an excavated area with suitable materials to provide support, stability, and protection to structures and utilities. It ensures proper load distribution, prevents …
Solid waste filling is an important development direction for filling mining. This research proposes the preparation of solid waste-based cemented paste backfill (SWCPB) to fill the underground mined area by using waste rock and copper slag as the mixed aggregate and granulated blast furnace slag, steel slag, and desulfurization …
Hazardous Materials and Wastes: For spills of hazardous materials, follow cleanup instructions on the package or, if applicable, the Safety Data Sheet. Consult with local …
Your ultimate resource for understanding backfill in construction. Understand materials, methods, and expert tips for effective foundation backfilling.
Solid waste filling is an important development direction for filling mining. This research proposes the preparation of solid waste-based cemented paste backfill (SWCPB) to fill the underground mined area by using waste rock and copper slag as the mixed aggregate and granulated blast furnace slag, steel slag, and desulfurization …
The backfilling mining method can effectively solve the environmental and safety problems caused by mining. It is the key technology to realize green mining. Scientific development has accelerated the pace of research on the rational utilization of mine solid waste and improved the research level of backfilling technology. The …
The application of construction waste as an aggregate in subgrade backfilling is an important recycling option. This study analyzed a subgrade backfill material consisting of lime-fly ash construction waste mixture (LFCWM). Compaction and California bearing ratio (CBR) tests were performed on LFCWM …
Backfill materials find applications in various construction scenarios: Foundation Backfill; Backfilling around foundations provides support and stability to the structure. It helps distribute the load evenly and prevents differential settling, ensuring the integrity of the foundation. Trench Backfill
