A review on design, evaluation, and performance of emulsified asphalt-treated bases using recycled aggregates

Chakravarthi, Sarella; Galipelli, Rajkumar; Sabavath, Shankar

doi:10.1007/s11356-022-20522-5

Cited by 9 publications

(1 citation statement)

References 62 publications

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“…Previous technical research works focused on unbound RA applications highlighting the feasibility of its use in civil projects such as to fill embankments (Galvín et al 2018 ; Liu et al 2022 ; Vieira and Pereira 2018 ) and as material for base or subbase layers on road construction (Agrela et al 2012 ; Sarella et al 2022 ) or on unpaved roads (Galvín et al 2013 ; Huber et al 2020 ). Also, the use of RA in the manufacture of recycled construction materials has been evaluated by Silva et al ( 2019 ), Yu et al ( 2021 ), and Lin et al ( 2023 ), which highlights the technical viability of using RA in a broad range of construction applications.…”

Section: Introductionmentioning

confidence: 99%

LCA applied to comparative environmental evaluation of aggregate production from recycled waste materials and virgin sources

Linares,

López-Uceda,

Piccinali

et al. 2024

Environ Sci Pollut Res

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Nowadays, all productive sectors, including the construction industry, are facing the challenge of reducing their environmental impact. To achieve this objective, numerous actions are being carried out to access greater levels of environmental and economic sustainability. Techniques as Life Cycle Assessment contribute to quantifying environmental impacts, promoting a circular economy in a sector that consumes a high volume of resources, materials, and energy while generating large amounts of gaseous, liquid, or solid emissions. The present study aims to deepen our understanding of aspects that demonstrate the benefits of using RA instead of natural aggregates. This study not only quantifies the environmental impact but also explores the effects of potential improvements in the productive system and their impact on reducing environmental harm. The Life Cycle Assessment methodology is applied to quantify and compare the environmental impacts generated in the production of a ton of mixed recycled aggregates (MRA) from construction and demolition wastes, based on the data provided by plant managers. This is compared to the environmental impacts generated in the production of one ton of natural aggregates extracted from a quarry. The results revealed that the production of mixed recycled aggregate is more environmentally beneficial, confirming a reduction of 70.66% in environmental impacts during the production of recycled aggregates, in comparison to the natural aggregates extraction. Furthermore, the economic analysis demonstrates the economic advantage since the cost of producing recycled aggregates is over 30% cheaper than natural aggregates, being more competitive even when the transportation distances from the plant to the work sites exceed those of natural aggregates. Graphical Abstract

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