PDF | On Nov 15, 2019, Alexander L. Ivannikov and others published The reuse of mining and construction waste for backfill as one of the sustainable activities | Find, read and cite all the ...
Backfill may be placed around a foundation, in a trench, or behind a retaining wall. The purpose of backfill is to provide support and stability to structures, prevent water accumulation, and ensure the ground is level and safe. Uses of Backfill. Backfill is used in various construction and landscaping projects, including:
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 study focussed on the hazard identification and mitigation strategies for the construction solid waste landfill. Major conclusions are summarized as follows: A …
But, scarcity of ideal granular materials necessitated the researchers to explore other alternatives. A large quantity of construction and demolition waste (CDW) is being generated in India as well as in other parts of the world. In this study, the feasibility of using CDW as a backfill for geosynthetic-reinforced soil walls has been attempted.
Proper management and disposal of wastes will reduce pollution in stormwater discharge from any construction site. Good waste management practices include properly …
Properly compacting backfill material is essential for ensuring the overall success and safety of a construction project. By using the appropriate compaction technique and following proper compaction methods, project managers can avoid settling, shifting, and other issues that can compromise the integrity of the finished product.
With a bit of advanced planning and insurance, you can ensure the waste materials are handled safely, ensuring minimal damage is inflicted on your construction …
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 the construction, backfilling stands as a pivotal process, essential for fortifying and supporting the foundations and structural components of buildings. It involves the replacement or reuse of excavated soil to ensure the structural integrity of a project. ... Selection of Appropriate Backfill Material: The choice of backfill material is ...
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 …
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 …
The backfill material can be anything from soil to gravel and is usually compacted to provide support and stability. Backfill can also be used to insulate foundations or improve drainage. This means that backfilling is essential in the construction process, following the foundation's pouring and installing utility lines.
Rodr´ıguez-Zapi´en et al. [2], taking central China as an example, further analyzed the pollution hazards of urban construction waste to the environment and proposed measures for the resource ...
Coal mine solid waste backfill is a coal mining method employed to safeguard subterranean and surface geological formations, as well as water resources, against impairment. It stands as a pivotal technical approach for realizing ecologically sustainable mining endeavors, aiming to address China's predicament of 'three down' …
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 …
3.1 Index Properties of Crushed Concrete. Figure 1 shows the grain-size distribution of crushed concrete used in this study, and the gradation was compared with that reported in the literature. Table 1 gives the grain-size distribution parameters, viz. the effective diameter of particles (D 10), the average particle size (D 50), the coefficient 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, …
High-fluid backfill materials (HFBMs), designed based on controlled low strength material (CLSM) as defined by the American Concrete Association [13], can make significant use of construction waste. Because the material has low strength requirements, more industrial solid waste, such as PG and BFS, can be added.
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 ...
Landfills are some of the most common means of waste disposal and have become increasingly popular due to the hazardous effects of burning waste, which used to be the primary technique of dealing with waste …
Construction and demolition waste (CDW) is a solid waste generated by urbanisation development around the world, and its treatment and utilization are burgeoning universally. The CDW are generally prepared into a slurry of cemented paste backfill (CPB), which is pumped to the goaf to control surface subsidence and utilize CDW.
1. Introduction. The carbon dioxide emitted by cement manufacturers accounts for approximately 8% of the total carbon emissions emitted by human activities [9], [6].Additionally, China produces approximately 100 million tons of steel slag annually [7].The resource exploitation of solid waste can be possible if steel slag can be used in …
Your ultimate resource for understanding backfill in construction. Understand materials, methods, and expert tips for effective foundation backfilling.
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 …
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Other studies have focused on the recycling and reusing of construction and demolition waste materials. Such studies applied ABM to assess various strategies of backfill reuse [135], and policies ...
After years of development, paste backfill technology has become an important part of China's green safety mine construction and coal green mining technology system in the new era. In this paper, the research status of paste backfill technology in China's coal mines is expounded from the aspects of paste backfill …
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 …
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 ...
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 ...
DOI: 10.1016/j.conbuildmat.2021.125492 Corpus ID: 243974541; Influences of mine water on the properties of construction and demolition waste-based cemented paste backfill @article{Zhou2021InfluencesOM, title={Influences of mine water on the properties of construction and demolition waste-based cemented paste backfill}, author={Nan Zhou …
Backfill in construction refers to the process of refilling an excavation or trench with soil or other materials after the structure's foundation has been established. …
Backfill material Construction and demolition waste ... Environmental and safety factors have caused the mining industry to consider backfilling un- ... the application of construction waste in ...
DOI: 10.1016/j.jclepro.2019.119332 Corpus ID: 211465013; Investigation of spatial stratified heterogeneity of cemented paste backfill characteristics in construction demolition waste recycled aggregates
This paper discusses the possibility of utilizing the construction and demolition waste (CDW) as cemented recycled aggregate backfill (CRAB) materials in the underground mining industry.
In order to manage C&D waste in sustainable manner, researchers have proposed different frameworks and models to reduce the generation of C&D waste at …
Human civilization brings the need for energy sources and construction materials. A large amount of materials are extracted from deep and open pit mines. Mining activities are inevitably related to the large direct impact on the local environment (dewatering, landscape). A lot of spoil material is produced in the course of mining production and …
After the completion of underground work, backfilling helps in returning the land to its original contour, which is crucial for the visual appeal of the site and for facilitating subsequent landscaping or construction activities. Types of Backfill Materials 1. Natural Soil. Natural soil is the most commonly used backfill material. It is readily ...
