No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
The construction sector is the major resource-consuming and waste-producing sector in our modern society, using – on average – more than 40% of the total raw materials extracted from the earth around the world …
2.4 PLACING AND CONTROL OF BACKFILL. Backfill should be placed in lifts no greater than shown in Table 2-1, preferably 200 mm (8 inches) or less and depending on the soil and type of equipment available. No backfill should be placed that contains frozen lumps of soil, as later thawing will produce local soft spots. Do not place backfill
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 uniformity (C u), …
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.
Implementing backfill correctly is essential for ensuring the longevity and safety of construction projects. This section explores the best practices and techniques for proper backfill …
The ongoing expansion of cities, in particular in the developing world, is accompanied by growing concerns regarding the escalating generation of construction waste (Duan et al., 2019).The extent and impact of waste that is generated during the construction of infrastructure projects, such as roadworks, is particularly significant, both in terms of material …
Traditional methods of waste rock-tailing treatment mainly include open piles and landfills, but these methods often have problems such as high environmental risks and low resource utilization [8], [9].To achieve the efficient use of waste rock and tailings, some scholars have tried to prepare a filling body with certain strength and stability through waste rock …
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.
Done improperly, backfilling causes problems that may start before the builder leaves the site and may remain long after he's gone. But the problems can be avoided by …
Environmental behavior of construction and demolition waste in cemented backfilling mining technology (CW-CBMT) is studied, with the aim of expanding the scope of …
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, reusing, and recycling C&DW. This …
The reuse of mining and construction waste for backfill as one of the sustainable activities To cite this article: Alexander L. Ivannikov et al 2019 IOP Conf. Ser.: Earth Environ.
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 …
1. Introduction. Construction waste is a waste resource with a wide range of applications [].Using construction waste as a subgrade backfill is a more direct method of application, which can effectively reduce the consumption of natural resources such as gravel.
The use of construction waste as a subgrade backfill material is a very promising approach to solve the problems of the rapidly increasing amount of construction waste and the shortage of ...
@article{Khandani2023AnES, title={An experimental study on the mechanical properties of underground mining backfill materials obtained from recycling of construction and demolition waste}, author={Faeze Sadat Khandani and Hadi Atapour and Mostafa Yousefi Rad and Behzad Khosh}, journal={Case Studies in Construction Materials}, year={2023}, url ...
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 characterization is necessary to …
Proper backfilling is essential for stability, preventing settlement, protecting utilities, controlling erosion, and supporting excavations. It ensures the longevity and safety of …
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
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 2019 ...
Backfilling is an important phase in the construction process, especially for the building foundations. Using the right backfill materials and proper compaction at the right time …
Heavy metals found in construction waste can enter soil and water bodies through surface runoff and leachate, where they represent an environmental hazard. In this study, we investigate the pollution characteristics and ecological risks of eight heavy metals (Cd, Cr, Cu, Mn, Ni, Pb, Zn, and As) in the soils of an unofficial construction waste ...
Backfilling is a crucial phase in construction that ensures the stability and longevity of structures. Whether it's the foundation of a building, a trench, or a pipeline, backfilling …
With the increase in global population, industrialization, and urbanization, waste from construction, renovation, and demolition (CRD) activities has grown rapidly. There are some issues associated with the disposal of CRD waste in landfills. Depositing in landfills is still the main method for CRD waste disposal from the global perspective. The objective of this study …
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 ...
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 …
In order to explore the potential environmental and safety risks of phosphogypsum-based cemented paste backfill (PCPB) in mines, aiming at the actual problems of different acidity and alkalinity of the groundwater environment where PCPB is located, the chemical solution erosion test, element concentration determination test, uniaxial compressive strength (UCS) …
The construction and demolition waste (CDW) could be used as backfill material to fill the voids created during the ore production in underground mining. However, there is a need to clarify the impact of CDW on groundwater pollution when it is used as backfill material in cemented paste backfill (CPB) of sulphide-rich tailings (S-rT). This study presents the influence of CDW on the …
the strength of Construction waste. In addition, the application of waste materials with pozzolanic characteristics to construction production has also become a method of great concern. Many scholars have conducted extensive research on the impact of waste glass on the performance of concrete, and numerous studies have shown that waste glass ...
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, playing a ...
