This research prepares a preliminary life cycle analysis of QRD, its carbon dioxide emissions as well as the economical analysis of QRD. The findings of this study …
2. The many ways mining activities impact biodiversity. Mining affects biodiversity at multiple spatial scales (site, landscape, regional and global) through direct (i.e. mineral extraction) and indirect processes (via industries supporting mining operations, and external stakeholders who gain access to biodiversity-rich areas as the result of …
In the arid and semi-arid regions of Northwest China, periodic rainfall deficits, high field evaporation, limited freshwater resources, and high irrigation costs restrict crop yield and water productivity (WP). Gravel mulching (GM), a traditional agricultural tillage management practice widely used in arid and semi-arid regions, improves crop yield and …
LCA is the methodology through which the lifecycle environmental impacts of an asset are determined quantitatively. By using LCA it is possible to make decisions …
Geoheritage and geoconservation are concerned with the preservation of geological features and are significant global endeavors, as evidenced by various international and intra-national conservation bodies, with agreements, conventions, and inter-governmental initiatives. In recent years, aggregate production from stream beds …
"We cannot extract 50 billion tonnes per year of any material without leading to massive impacts on the ... & Byrnes, M. R. (2004). The U.S. Minerals Management Service Outer Continental Shelf Sand and Gravel Program: Environmental Studies to Assess the Potential Effects of Offshore Dredging Operations in Federal Waters. ... R. …
This not only reduces environmental impact but also offers cost savings and meets the growing demand for eco-friendly construction materials. Advances in crushing and screening technology enable more efficient gravel production, lowering costs and improving product quality. ... 6.7 Global Gravel Market Revenue Analysis (USD Million) …
Recycled aggregates; Recycled aggregates are an essential component of green concrete, as they help to reduce the environmental impact of concrete production by utilizing waste materials and reducing the demand for natural resources (Levy and Helene, 2004; Chen et al., 2003; Hansen, 1986; Evangelista and De Brito, 2014; Wang …
Gravel production may have a higher environmental impact due to quarrying and transportation. Binding Properties: Recycled asphalt has binding properties due to the residual asphalt binder, which can help it to compact and form a semi-solid surface. Gravel lacks these binding properties and remains loose unless stabilized with other materials.
Introduction. 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 …
resources, illegal mining, and environmental impact of sand mining. The purpose of this paper is twofold: to present an overview of the sand market, highlighting the main trends and actors for production, export and import, and to review the main environmental impacts associated with sand exploitation process.
The environmental impact of cement and concrete production is low per unit volume of material, but the amounts used make the impact of the concrete sector highly important.
Cement and crushed gravel accounted for a high proportion in environmental impact load of five key environmental impact categories. It can be …
This study aims to evaluate the environmental impact of using red mud (RM) as a partial replacement for cement in concrete production. Using industrial byproducts such as red mud as a raw material in concrete can reduce the environmental impacts of concrete and alumina industries. Red mud can also provide a sustainable …
The main objectives of this paper are: (1) to present an overview of the sand market, highlighting the main trends and actors for production, export and import; and (2) to review the main environmental impacts …
An environmental impact assessment of the air pollution emissions from the mining and quarrying sectors of European countries. • Structure of mining and quarrying sector according to the Eurostat database. • The environmental impact and damage categories, based on the life cycle assessment method.
Production of bitumen accounts for 49 % of climate change impacts, while the production of gravel and sand only account for 3 %. In the MF construction stage, 27 % of climate impacts are generated by the portable HMA plant burning diesel operating at Communication Road, and upstream production of diesel accounts for 5 % of the …
The decrease in production and landfill of gravel are the main reasons for the reduction of environmental impact. The paper studies the important factors that …
It is observed that environmental impacts of quarrying sand, gravel, and other building materials from stream beds lead to modifications in stream regime (Ozcan et al., 2012). The complications ...
This paper assesses the environmental impact of sand extraction and the problems associated with its illegal exploitation. The analysis indicates that extracting sand at a greater rate than that ...
Dihydrogen (H2), commonly named 'hydrogen', is increasingly recognised as a clean and reliable energy vector for decarbonisation and defossilisation by various sectors. The global hydrogen demand is projected to increase from 70 million tonnes in 2019 to 120 million tonnes by 2024. Hydrogen development should also meet the seventh goal of …
This work investigates the effect of variable gravel pack length on well performance. Field data were obtained on the well, fluid properties, reservoir and PROSPER used to developed a wellbore ...
environment from the negative impact of any project, whereas the observed fact from abandoned and functioning quarry sites shows these rules are not followed strictly. Keywords: aggregate, sustainability, Ethiopia, production, environmental impact 1. Introduction The construction industry in Ethiopia is a major driving sector for economic …
Environmental impact of aggregate production Production activities in any industry may harm the environment through their damaging effects on air, water, soil, and biodiversity …
ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT REPORT Final March 2012 E2986 v3 Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized
Gravel loss contributes to rutting, the undesirable environmental impact of sedimentation and dust, and the reduced structural strength of the gravel road (38, 67). Rut depth and vertical deformations increase with increasing water levels and heavy vehicle traffic, underscoring the need for proper road drainage system maintenance .
My literature review on aggregate Life Cycle Assessments (LCA) highlighted many shortcomings, such as low-quality inputs and fragmented system boundaries, and estimated that gravel consumption is responsible for 0.17–1.8% of the …
For RCA-C, infrastructure does not exceed 3% of the total impact. In contrast, infrastructure has the largest influence on the total impact of NCA production. Regarding the NCA production, the contribution analysis shows that the production of NCA has stakes distributed in a greater number of stages than the recycling process.
What is the impact of river gravel extraction in Fiji? The study identified significant and acute negative social and environmental impacts associated with river gravel extraction of Fiji's perennial rivers. Fijian communities depend on rivers for services including drinking water, food, washing, transporta -
Three pavements were considered for the social and environmental analysis performed. The pavements differ on terms of the material used for the base (Table 1): Gravel (G), Fly Ash-Carbide Lime (FA-CL), and Fly Ash-Carbide Lime-Salt (FA-CL-Salt).FA was obtained from a local power plant in the south of Brazil and is a waste from …
1 Gagg, Colin R. "Cement and concrete as an engineering material: An historic appraisal and case study analysis." Engineering Failure Analysis, 40, 2014, pp. 114-140, doi: 10.1016/j.engfailanal.2014.02.004 2 PBL Netherlands Environmental Assessment Agency. "Trends in Global CO 2 Emissions: 2016 Report."
The advancement of eco-friendly technology in the construction sector has been improving rapidly in the last few years. As a result, multiple building materials were developed, enhanced, and proposed as replacements for some traditional materials. One notable example presents geopolymer as a substitute for ordinary Portland concrete …
As a technique for assessing the potential environmental impacts associated with a product, life cycle assessment (LCA) can help assess the environmental impacts associated with all the stages of the life of building materials (Figure 3).Material, energy usage, and emissions inventory data from the various stages of building …