— examined particularly according to waste scenarios in production, construction, and end-of-life processe s. Th ese EPD s are d eveloped according to product category rules of cons truction products
— The accumulation of construction and demolition (C&D) waste in landfills is deemed a worldwide concern which is exacerbated by the impact of rapid urbanization and increased construction activities. The massive amount of …
— Aeolian sand (AS) was taken from the surface of the Shanghe coal mine in Yulin. The particle size of the AS was tested using a laser particle size meter (Rise-2006, Beijing, China), and the results are shown in Fig. 1.The particle size distribution of AS ranged from 0.412 to 493.6 µm, of which d 10 = 8.1 µm, d 50 = 514.5 µm, d 90 = 357.9 …
— It is estimated that the total construction and demolition waste (C&D waste) generation was over 1.5 billion tons in 2017 (excluding construction spoil) and waste concrete accounted for 30% to 40% of the total C&D waste . Over 40% of recycling production from waste concrete is suitable to use as recycled sand in preparing concrete …
— Modern processes are now able to transform non-recyclable waste, including construction and demolition (C&D) waste, into an alternative low-carbon fuel for cement …
— Sand, gravel, and crushed stone (collectively referred to herein as aggregates) are the most in-demand materials on the planet in terms of volume. 1, 2 Together, they are a central foundation of our economies and integral to sectors such as construction, infrastructure, electronics, cosmetics, and pharmaceuticals. 3 The growing …
and Manufactured Sand Production Gyanendra Kumar Attri1 · Ramesh Chandra Gupta1 · Sandeep Shrivastava1 Received: 30 January 2022 / Revised: 21 March 2022 / Accepted: 27 March 2022 ... Construction Waste Building (Residential, Commercial, Hospital, School and Industrial) Construction Waste Infrastructure (Roadways,
The compressive strength of concrete from 0% to 15% replacement of sand by waste foundry sand is satisfactory. Replacement of natural sand with waste foundry sand showed increases in the split tensile strength and flexural strength up to the 15% replacement then after split tensile strength reduced.
— Material waste is one of the most difficult factors to control in construction projects, and over 75% of construction waste holds untapped value and isn't currently being repurposed or recycled. The Environmental Protection Agency (EPA) found that total waste from construction-related projects was double that of municipal waste from s …
— The by-product of the foundry industry is waste foundry sand (WFS). The use of WFS in building materials will safeguard the ecosystem and environmental assets while also durable construction.
— This chapter describes the natural aggregate industry and methods to sustain aggregate resources. 9.2 Production of aggregate, 9.3 Substitutes and manufactured aggregates, 9.4 Extending aggregate availability through recycling, 9.5 Performance of aggregate in use, 9.6 Waste products from aggregate mining and processing describe …
— Waste foundry sand (WFS) is the by-product of the foundry industry, which is produced about 0.6 tons per 1 ton of foundry industry production. While it cannot be recycled or reused, it will be disposed of in landfills. Today, with increasing attention to environmental issues, the reuse and recycle of materials because of limited resources …
— The results showed that the proposed method permitted the production of low-porosity sand from construction and demolition waste and may contributes to changing the construction recycling model.
— The construction industry has been greatly developed in the past few decades, especially in the extensive use of underground space. The increasing amount of waste (e.g., soil, sludge, and rock) generated in the underground construction constitutes an important part of construction and demolition waste (CDW), but the related problems are …
— Recently, research on innovative approaches to and practices for plastic waste management in a circular economy has gained momentum. Plastic waste pollution poses a serious environmental concern. At the same time, the cement industry is among the biggest sources of CO2 emissions, which poses another environmental challenge. This …
— 1. Introduction. Sand is a key ingredient for modern societies. It is used in concrete, bricks and glass production, and the construction of buildings therefore consume large amounts of this material (OECD, 2019).Increasing pressure on the world's sand resources has potentially large environmental and human consequences.
— 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 …
— United States has about 3000 foundries which annually utilizes 100 million tons of sand for its production and about 6–10 million metric tons of waste foundry sand is discarded per year, which goes into landfills [2], [3]. With high national average tipping fee of foundry by-products landfilling has also not remained a feasible option.
— More than three million tonnes of metal castings were manufactured in Brazil in 2008, and the country's waste foundry sand production has significantly increased in recent years resulting in increased need for new sanitary landfills; hence reusing waste foundry sand (WFS) becomes a crucial issue for the foundry industries and for the ...
This review critically evaluates the potential of Waste Foundry Sand (WFS) as a substitute for fine aggregate in concrete, conducting a comparative analysis of its physical and …
— Filter sand: Construction sand can also be used as filter sand. Filter sand is used to remove sediment and impurities from water. Playground sand: Construction sand can also be used in sandboxes and playgrounds. Playground sand is typically coarse-grained and non-abrasive, making it safe for children to play in.
— Bossink et al. [] identified in their research work that the construction companies will benefit from reduced waste generation.Carlos et al. [] concluded in their research work that material waste has been recognized as a major problem in the construction industry.Beguma et al. [] recorded some waste minimization factors which …
— Highlights Mineral processing has been long applied to CDW recycling, although few researches focus on the production of recycled sand. The sand fraction originally present in crushed C&D waste represents around 50% of the total waste. This paper presents a technology that permits the production of high quality recycled sand. …
The World Green Building Council estimates that the construction industry accounts for more than 50 per cent of all materials extracted globally and that construction and demolition waste makes up 35 per cent of the world's landfills (Joseph et al., 2023).In 2020, China generated 2.6 billion tonnes of construction and demolition waste, but only 312 …
— The need to promote sustainability and reduce environmental effects has fueled a substantial increase in the use of recycled and waste materials in construction applications in recent years. Concerns about harmful environmental threats are heightened when output increases and waste generation rises. An economically viable solution to …
— Waste produced (WFS) from these foundries is approximately 1,710,000 tons (1.71 MT) per annum [5]. In an effort to use the waste foundry sand in large …
— Waste foundry sand (WFS) is the by-product of the foundry industry, which is produced about 0.6 tons per 1 ton of foundry industry production. While it cannot be …
Another CDW management challenge in at least some regions of the globe is the scarcity of sand and gravel resources due to rapid global urbanization that creates the predicted …
— This swift research article by the Iqbal Institute of Policy Studies discusses the impact of construction waste on the environment and how a sustainable model can be achieved for recycling and reuse.. Understanding Construction Waste. Waste production is a natural outcome of material consumption. However, poor handling of materials, …
— Waste foundry sand (WFS) is a by-product of the metal casting process, which constitutes a sustainable solution as a replacement for natural sand (NS) in the …
— 4. Construction Waste. Construction waste can be classified on various basis, either on the basis of its source or on its nature. When classified on the basis of its nature, the authors have categorized the waste as physical waste (residual debris) and non-physical waste (time overruns and cost overruns). Figure 5 examines the different …
— The exponential rise in the production of plastic and the consequential surge in plastic waste have led the scientists and researchers look out for innovative and sustainable means to reuse/recycle the plastic waste in order to reduce its negative impact on environment. Construction material, converting waste plastic into fuel, …
