environmental impacts of asphalt and concrete plants and rock quarries

Concrete: the most destructive material on Earth

Half of concrete's CO2 emissions are created during the manufacture of clinker, the most-energy intensive part of the cement-making process. But other environmental impacts are far less well ...

Better Road Building Paves Way for Energy Savings

But John Harvey, principal investigator at the University of California's Pavement Research Center, says that "asphalt versus concrete" is the wrong way of looking at the environmental questions ...

AP-42, Vol. I, CH 4.5: Asphalt Paving Operations

4.5 Asphalt Paving Operations 4.5.1 General1-3 Asphalt surfaces and pavements are composed of compacted aggregate and an asphalt binder. Aggregate materials are produced from rock quarries as manufactured stone or are obtained from natural gravel or soil deposits. Metal ore refining processes produce artificial aggregates as a byproduct.

Environmental and Economic Comparison of Natural and …

Recycled aggregates (RAs) have been playing an important role in replacing natural aggregates (NAs) in concrete production, thereby contributing to a reduction in the extraction of natural resources and the promotion of a circular economy. However, it is important to assess the global impacts of this replacement, in both environmental and …

A systematic review of the utilization of waste materials as

Hot-mix asphalt (HMA) is one of the oldest paving asphalts used to construct durable and smoother roads. Since the past 20 years, 12 million km of new road networks were constructed globally, and it is projected an additional 25 million km of road networks will be constructed by 2050 (Abd Rashid et al. 2020).There are three categories of …

Waste Silt as Filler in Hot Mix Asphalt: A Laboratory

Several studies aimed to improve both the performance and environmental impact of asphalt pavements using waste and recycled materials as fillers. This study focused on the effect of untreated and thermally treated silt as a filler in hot mix asphalt (HMA). The silt used in the study was a byproduct from a local aggregate production …

Recycling of Waste Materials for Asphalt Concrete and …

In this research the types of sample were asphalt mixture with 5% glass, 5% plastic, 2.5% glass and 2.5% plastic; 4% plastic and 1% glass; and 1% plastic and 4% glass. Marshall stability and flow results showed an excellent prospects using 5% plastic in asphalt concrete. The adapted results are given in Table 3.

Sustainability of aggregates in construction

This chapter describes the aggregate industry and sustainable aggregate resource management, including the complex environmental, societal, and social issues associated with the exploration, mining, processing, transportation, and recycling of …

Environmental Implications of Quarry Rock Dust: A …

Quarry rock dust (QRD), a waste obtained during the quarrying process is a significant source of air pollution yet has the potential of becoming a sustainable and economical alternative to sand in concrete. Studies confirmed that replacing sand in conventional concrete with QRD increases its durability and robustness by ten percent.

Lung Function and Respiratory Health of Populations Living …

Despite economic importance, the stone industry has a serious negative impact on the environment at both of its types of sites: quarries and cutting workshops. The rock extraction process in quarries is the main source of dust as well as other problems, including noise, vibration, and land disturbance [3,4].

No Longer Just a Hole in the Ground The …

quarries often negatively impact those who live nearby, but they often leave residual negative impacts on the environment. Runoff of chemical pollutants into bodies of water, loss of natural habitats, farmland, and vegetation, and natural resource exhaustion are …

Cleaner technologies for asphalt mixtures combining reuse …

Aggregates. To guarantee consistency, the fractions of aggregate for the mixtures (0–4, 4–10 and 10–20 mm) were mechanically crushed from the same type of volcanic rock in the same quarry ...

(PDF) Environmental Impact and Sustainability …

Specific efforts should be made within the Life cycle cost (LCC) to capture the environmental impacts of Life cycle Assessment (LCA) significant materials (Concrete, steel, timber, and asphalt) as ...

7 Predicted Environmental Impacts & Mitigation …

operation of the plant will certainly have certain impacts on the environmental receptors. However, mitigating measures will be incorporated in the design, installation and operation to minimise those impacts. The potential environmental impacts associated to the operational phase of an Asphalt Plant are as follows: Dust Emission

Steel Slag and Recycled Concrete Aggregates: Replacing Quarries …

Among the alternative materials that several authors have studied regarding their use as partial or total substitutes for natural aggregates in the asphalt paving industry, the steel slag ...

Steel Slag and Recycled Concrete Aggregates: …

Various researchers are developing efforts to integrate waste and by-products as alternative materials in road construction and maintenance, reducing environmental impacts and promoting a circular …

Mining Wastes as Road Construction Material: A …

The mining industry manages large volumes of tailings, sludge, and residues that represent a huge environmental issue. This fact has prompted research into valorization of these wastes as alternative …

Steel Slag and Recycled Concrete Aggregates: Replacing Quarries …

Various researchers are developing efforts to integrate waste and by-products as alternative materials in road construction and maintenance, reducing environmental impacts and promoting a circular economy. Among the alternative materials that several authors have studied regarding their use as partial or total substitutes for …

Environmental impacts of reclaimed asphalt …

This study investigated the environmental impacts of RAP, with a focus on trace element release from RAPs and potential retention of some metals by natural soil. The RAPs in this study included 1 un-aged fresh hot mix asphalt (HMA) and 3 weathered RAP materials.

Cement and Concrete: The Environmental Impact — PSCI

The Production Process of Concrete: Concrete is constructed using cement mixed with an aggregate-- a grainy blend of materials such as stone and sand. After mixing, the concrete is poured into a mold and left to harden then use in building. The aggregates are sourced from a local body of water and crushed in a natural procedure.

Environmental Management at Aggregate Operations

• Storm water runoff from mine and quarry stockpiles and pit walls, as well as from equipment like rock crushers, hot mix asphalt, and concrete production plants. A site with runoff needs to have a Pollution Prevention Plan implemented for the operations at that particular site. Good management practices such as vegetative

GCCA Sustainability Guidelines for Quarry Rehabilitation …

watersheds. Minimizing environmental impact is therefore a fundamental requirement for the sustainable operation in the cement sector. Impacts can be successfully addressed and mitigated through the development and implementation of an effective quarry rehabilitation plan and a Biodiversity Management Plan, especially in areas of

Extracting Minerals

There are more than 2,000 quarries and associated production sites across Great Britain – from quarries and cement works to concrete factories and asphalt plants. Each site is different depending on the type of material, the location of the site, the processes required, the size of the market they supply and many other factors.

Information Summary Asphalt Grindings / RAP …

concrete surfaces. Asphalt grindings contain approximately five to seven percent asphalt, which is used as a binder for the quarry materials (stone, rock, sand, silt) that make up the load-bearing portion of a bituminous concrete surface. The asphalt millings are produced by grinding a bituminous concrete-paved surface.

Potential of dolomite industrial waste as construction material…

Kumar et al. [ 85] showed the impact of adding dolomite waste as a replacement of cement in concrete. The 0%, 5%, 10%, 15%, and 20% of cement were replaced in the various mixes. They found the maximum compressive strength (an increase of 5.84%) at a 5% replacement of cement by dolomite waste powder.

Recycling of Waste Materials for Asphalt Concrete …

This paper provides an overview of some promising waste products like high-density polyethylene, marble quarry waste, building demolition waste, ground tire rubber, cooking oil, palm oil fuel ash, coconut, sisal, cellulose and polyester fiber, starch, plastic …

Characterization of quarry dusts and industrial by-products …

The bulk generation of quarry dust (QD) from quarries, aggregates, and decorative stone plants, is a serious environmental issue. However, QD has the potential to provide eco-economic and technical merits when incorporated in the construction products. This review provides current investigations on the development of QD-based …

The Environmental Impact of Asphalt Plants

ScienceDirecthttps://

Reducing the environmental impact of concrete and …

Web•. The impact is measured using scenarios and life-cycle assessment. •. The scenarios show a maximum reduction of 39% in environmental impact. •. Substantial impact reduction can be realized through applying warm-mix asphalt. Keywords. …

اقرأ أكثر

Overview of the Sand and Aggregate Industry-edited …

Manufactured sand is produced by the mechanical crushing or milling of rock and gravel. Mine-dump sand can also be classified as manufactured sand, being a waste product in the mining industry. 3. PRODUCTION PROCESS How is aggregate and sand produced? Most hard rock material used to produce coarse aggregate is sourced from open pit quarries

You don't want to live near a concrete batch plant. But TCEQ …

Volatile organic compounds (VOCs) are also a problem at concrete batch plants, Dr. Latrice Babin, director of Harris County Pollution Control, says. VOCs can irritate the eyes and respiratory system and cause shortness of breath, headaches, fatigue, skin problems and impair the memory. Higher concentrations of VOCs, she says, can even …