Life Cycle Assessment guidelines for the sustainable production and recycling of aggregates: the Sustainable Aggregates Resource Management project (SARMa)

Blengini, Gian Andrea; Garbarino, Elena; Šolar, Slavko V.; Shields, Deborah J.; Hámor, Tamás; Vinai, Raffaele; Agioutantis, Z.

doi:10.1016/j.jclepro.2012.01.020

Cited by 71 publications

(48 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Technically, it is a management tool that considers the quantification of resource consumption and emissions of a product, not only in the production phase, but also in the earlier stages (i.e. extraction of inputs and raw materials) as well as the later stages of the product to its final disposal as waste [37]. In this study, LCA concept can be narrowed down to four main steps, including goal and scope definition and life cycle inventory analysis, life cycle impact assessment and interpretation.…”

Section: Lca Applicationmentioning

confidence: 99%

“…For the mineral processing, LCA practitioners have been seeking to explore the answer of how mining can become more environmentally sustainable for many years. Such applications include iron ore mining [35], coal [36], [37], copper [38], [39], aluminum [40], and gold production [41]. Norgate [11] also assessed all environmental impacts of the gold extraction and production with regards to GHG emissions (t CO2 eq./t Au), embodied energy (GJ/t Au), embodied water (t/t Au) and solid waste burden (t/t Au) by using LCA method.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Assessment of Environmental Impacts of Limestone Quarrying Operations in Thailand

Kittipongvises

2017

Environmental and Climate Technologies

View full text Add to dashboard Cite

-Environmental impacts of the mineral extraction have been a public concern. Presently, there is widespread global interest in the area of mining and its sustainability that focused on the need to shift mining industry to a more sustainable framework. The aim of this study was to systematically assess all possible environmental and climate change related impacts of the limestone quarrying operation in Thailand. By considering the life cycle assessment method, the production processes were divided into three phases: raw material extraction, transportation, and comminution. Both IMPACT 2002+ and the Greenhouse Gas Protocol methods were used. Results of IMPACT 2002+ analysis showed that per 1 ton crushed limestone rock production, the total depletion of resource and GHGs emissions were 79.6 MJ and 2.76 kg CO2 eq., respectively. Regarding to the four damage categories, 'resources' and 'climate change' categories were the two greatest environmental impacts of the limestone rock production. Diesel fuel and electricity consumption in the mining processes were the main causes of those impacts. For climate change, the unit of CO2 eq. was expressed to quantify the total GHGs emissions. Estimated result was about 3.13 kg CO2 eq. per ton limestone rock product. The results obtained by the Greenhouse Gas Protocol were also similar to IMPACT 2002+ method. Electrical energy consumption was considered as the main driver of GHGs, accounting for approximately 46.8 % of total fossil fuel CO2 emissions. A final point should be noted that data uncertainties in environmental assessment over the complete life cycle of limestone quarrying operation have to be carefully considered.

show abstract

Section: Lca Applicationmentioning

confidence: 99%

mentioning

confidence: 99%

Assessment of Environmental Impacts of Limestone Quarrying Operations in Thailand

Kittipongvises

2017

Environmental and Climate Technologies

View full text Add to dashboard Cite

show abstract

“…In contrast to this study, a vigorous sampling campaign which assesses materials from within the pile must be designed and followed. Through adopting such a characterisation approach, the true value of these materials in a circular economy [46,47] context can be ascertained, and a more sustainable approach to mine waste management realised. …”

Section: Risk Assessment Frameworkmentioning

confidence: 99%

Geoenvironmental Characterisation of Heap Leach Materials at Abandoned Mines: Croydon Au-Mines, QLD, Australia

Parbhakar-Fox

2016

Minerals

View full text Add to dashboard Cite

Abstract:Heap leaching is a well-established metallurgical technology which allows metal recovery (e.g., Au, Cu, U) from low-grade ores. However, spent heap leach materials remaining at abandoned or historic mine sites may represent a potential source of contamination. At the Croydon Au-mines, heap leaching operations (1984)(1985) were performed on mineralized rhyolites hosting sulphides including pyrite, galena, arsenopyrite and minor sphalerite. Characterization of spent heap leach materials (n = 14) was performed using established geochemical and mineralogical techniques, supplemented by automated mineralogical evaluations. Whilst these materials contained low sulphide-sulphur (0.08 to 0.41 wt %) and returned innocuous paste pH values (pH 5.1 to 8.6), they were classified uncertain by net acid producing potential/net acid generating criteria. This was likely due to the reaction of secondary mineral phases (i.e., beudantite, hidalgoite, kintoreite and Fe-As-Pb oxides) during these tests. It is hypothesised that during heap leaching, gangue sulphides have differentially reacted with the cyanide lixiviant, pre-conditioning the formation of these complex secondary phases during surficial oxidation, after heap leaching termination. These materials are considered to represent a moderate geoenvironmental risk as dissolved Pb in basal leachates is in excess of the World Health Organization (WHO 2006) guideline values. Considering this, these materials should be included in ongoing rehabilitation works at the site.

show abstract

“…The building industry, in fact, represents a significant nature-consuming activity (2), with the quarrying activities for the production of aggregates for concrete being expensive in terms of "environmental costs". In this view, in the last decade, much research (3)(4)(5)(6)(7)(8)(9)(10)(11) has been oriented to the partial substitution of natural aggregates by industrial by-products, in particular foundry sand and slag, rubber, glass, electric arc furnace slag and many other secondary materials.…”

Section: Introductionmentioning

confidence: 99%

Concrete manufactured with crushed asphalt as partial replacement of natural aggregates

2016

View full text Add to dashboard Cite

ABSTRACT:The paper focuses on the reuse of crushed asphalt (GA) as a partial replacement (up to 20%) of natural aggregates for concrete manufacture. Addition of GA aggregates produced a positive effect on workability loss. The GA mixes, however, showed a significant tendency to bleed and segregate at the highest replacement percentage applied. GA led to a decrease of compressive strength in concrete (with respect to that of the reference concrete) up to 50% due to the weakness of the cement paste / recycled aggregate interface. To compensate for this negative effect, a reduction of w/c for the GA concretes was necessary. A decrease of w/c allowed the GA concretes to show drying shrinkage values substantially similar to those of reference concrete with the same cement factor. The experimental results confirmed the possibility of partial substitution (max. 15%) of natural aggregates with crushed asphalt for making concrete. RESUMEN:Hormigón fabricado con asfalto triturado como reemplazo parcial de áridos naturales. El artículo se centra en la reutilización del asfalto triturado (AM) como reemplazo parcial (hasta 20%) de áridos naturales para la fabricación de hormigón. Los áridos de AM además produjeron un efecto positivo sobre la pérdida de la trabajabilidad. Las mezclas de AM mostraron una marcada tendencia a la exudación y segregación en el más elevado porcentaje de sustitución. El AM condujo a una disminución de la resistencia a la compresión en el hormigón (con respecto al hormigón de referencia) de hasta un 50% debido a la debilidad de la pasta de cemento. Para compensar este efecto, fue necesaria una reducción de agua-cemento (a/c) para hormigones AM. Se consiguieron valores de retracción de secado sustancialmente similares a los de hormigón de referencia con el mismo contenido de cemento. Los resultados experimentales confirmaron la posibilidad de sustitución parcial (máximo 15%) de áridos naturales por asfalto triturado para la fabricación de hormigón.

show abstract

Life Cycle Assessment guidelines for the sustainable production and recycling of aggregates: the Sustainable Aggregates Resource Management project (SARMa)

Cited by 71 publications

References 19 publications

Assessment of Environmental Impacts of Limestone Quarrying Operations in Thailand

Assessment of Environmental Impacts of Limestone Quarrying Operations in Thailand

Geoenvironmental Characterisation of Heap Leach Materials at Abandoned Mines: Croydon Au-Mines, QLD, Australia

Concrete manufactured with crushed asphalt as partial replacement of natural aggregates

Contact Info

Product

Resources

About