Expanding Boundaries - A Framework for Life Cycle Assessment of Concretes with Recycled Aggregates in Large Metropolitan Areas – A. Yazdanbakhsh, L.C. Bank, T. Baez, I. Wernick, A. Hamidi

2016 ◽  
Author(s):  
Yazdanbakhsh, A. ◽  
Bank, L.C. ◽  
Baez, T.
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Metropolitan Areas ◽  
Recycled Aggregates

scholarly journals From Buildings’ End of Life to Aggregate Recycling under a Circular Economic Perspective: A Comparative Life Cycle Assessment Case Study

2021 ◽  
Vol 13 (17) ◽  
pp. 9625
Author(s):  
Ambroise Lachat ◽  
Konstantinos Mantalovas ◽  
Tiffany Desbois ◽  
Oumaya Yazoghli-Marzouk ◽  
Anne-Sophie Colas ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
End Of Life ◽  
Environmental Impacts ◽  
Open Loop ◽  
Decision Makers ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Demolition Waste

The demolition of buildings, apart from being energy intensive and disruptive, inevitably produces construction and demolition waste (C&Dw). Unfortunately, even today, the majority of this waste ends up underexploited and not considered as valuable resources to be re-circulated into a closed/open loop process under the umbrella of circular economy (CE). Considering the amount of virgin aggregates needed in civil engineering applications, C&Dw can act as sustainable catalyst towards the preservation of natural resources and the shift towards a CE. This study completes current research by presenting a life cycle inventory compilation and life cycle assessment case study of two buildings in France. The quantification of the end-of-life environmental impacts of the two buildings and subsequently the environmental impacts of recycled aggregates production from C&Dw was realized using the framework of life cycle assessment (LCA). The results indicate that the transport of waste, its treatment, and especially asbestos’ treatment are the most impactful phases. For example, in the case study of the first building, transport and treatment of waste reached 35% of the total impact for global warming. Careful, proactive, and strategic treatment, geolocation, and transport planning is recommended for the involved stakeholders and decision makers in order to ensure minimal sustainability implications during the implementation of CE approaches for C&Dw.

Life cycle assessment for concrete kerbs manufactured with recycled aggregates

2016 ◽  
Vol 113 ◽  
pp. 41-53 ◽  
Author(s):  
Fernando López Gayarre ◽  
José González Pérez ◽  
Carlos López-Colina Pérez ◽  
Miguel Serrano López ◽  
Alfonso López Martínez
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Recycled Aggregates

Environmental life cycle assessment of coarse natural and recycled aggregates for concrete

2016 ◽  
Vol 22 (4) ◽  
pp. 429-449 ◽  
Author(s):  
Bruno Estanqueiro ◽  
José Dinis Silvestre ◽  
Jorge de Brito ◽  
Manuel Duarte Pinheiro
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Recycled Aggregates ◽  
Environmental Life Cycle Assessment

scholarly journals LIFE CYCLE ASSESSMENT OF RECYCLED AGGREGATES

1996 ◽  
Vol 24 ◽  
pp. 430-434
Author(s):  
Akira IWABUCHT ◽  
Tohru MATSUMOTO ◽  
Hidefumi IMURA
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Recycled Aggregates

Life Cycle Assessment of Natural and Recycled Concrete Aggregate Production for Road Pavements Applications in the Northern Region of Colombia: Case Study

2019 ◽  
Vol 2673 (5) ◽  
pp. 397-406 ◽  
Author(s):  
Gilberto Martinez-Arguelles ◽  
Maria Paola Acosta ◽  
Margareth Dugarte ◽  
Luis Fuentes
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Northern Region ◽  
Recycled Concrete ◽  
Recycled Aggregates ◽  
Aggregate Production ◽  
Road Base ◽  
Mobile Plant ◽  
The Impact

The environmental impacts of natural aggregates (NA) and recycled concrete aggregates (RCA) production for use in road pavements have been evaluated in this study through an attributional life cycle assessment (LCA) from cradle to gate. Such effort is relevant considering the increasing interest of national agencies in applying recycled aggregates for construction and rehabilitation (C&R) of highway infrastructures. The study used site-specific data from two different aggregate production plants, stationary and mobile, both located in the northern region of Colombia. The stationary facility produces NA, and the mobile plant processes a combination of NA and RCA from the demolition of Portland cement concrete (PCC) pavements in the city of Barranquilla. The aggregates produced in the stationary facility are generally used as road base and subbase materials, and in the production of PCC, whereas the recycled mobile plant produces aggregate for subbase and road base mainly. Two scenarios were contemplated in the study. The first scenario involved extraction, hauling, and processing of NA. The second scenario involved aggregate (limestone) extraction, hauling, and recycling of RCA, and finally processing the combination of NA with RCA. The environmental impacts related to the production process of both stationary and mobile plants were evaluated using the computer program SimaPro 8.4.0 and the impact assessment method IMPACT 2002+. The results showed that diesel fuel is the principal energy used in both production processes, and is mainly responsible for the negative impact on respiratory inorganics, global warming, and nonrenewable energy. Results were very sensitive to transportation distances.

scholarly journals Life Cycle Assessment of Sustainable Asphalt Pavement Solutions Involving Recycled Aggregates and Polymers

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3867
Author(s):  
Cristina Oreto ◽  
Francesca Russo ◽  
Rosa Veropalumbo ◽  
Nunzio Viscione ◽  
Salvatore Antonio Biancardo ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Asphalt Pavement ◽  
Impact Category ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Base Layer ◽  
Demolition Waste ◽  
Binder Layer ◽  
The Impact

The pursuit of sustainability in the field of road asphalt pavements calls for effective decision-making strategies, referring to both the technical and environmental sustainability of the solutions. This study aims to compare the life cycle impacts of several pavement solution alternatives involving, in the binder and base layers, some eco-designed, hot- and cold-produced asphalt mixtures made up of recycled aggregates in substitution for natural filler and commercial recycled polymer pellets for dry mixture modification. The first step focused on the technical and environmental compatibility assessment of the construction and demolition waste (CDW), jet grouting waste (JGW), fly ash (FA), and reclaimed asphalt pavement (RAP). Then, three non-traditional mixtures were designed for the binder layer and three for the base layer and characterized in terms of the stiffness modulus. Asphalt pavement design allowed for the definition of the functional units of Life Cycle Assessment (LCA), which was applied to all of the pavement configurations under analysis in a “from cradle to grave” approach. The LCA results showed that the best performance was reached for the solutions involving a cold, in-place recycled mixture made up of RAP and JGW in the base layer, which lowered all the impact category indicators by 31% on average compared to those of the traditional pavement solution. Further considerations highlighted that the combination of a cold base layer with a hot asphalt mixture made up of CDW or FA in the binder layer also maximized the service life of the pavement solution, providing the best synergistic effect.

scholarly journals Environmental and Economic Life Cycle Assessment of Recycled Aggregates Concrete in the United Arab Emirates

2021 ◽  
Vol 13 (18) ◽  
pp. 10348
Author(s):  
Mohammed H. Alzard ◽  
Hilal El-Hassan ◽  
Tamer El-Maaddawy
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
United Arab Emirates ◽  
Economic Life ◽  
International Standards ◽  
Recycled Aggregates ◽  
Cement Replacement ◽  
Material Transportation ◽  
Natural Aggregates ◽  
The Cost

This paper studies the potential environmental and economic impact of replacing natural aggregates (NA) with recycled aggregates (RA) in the production of different sustainable concrete mixes in the United Arab Emirates (UAE). A life cycle assessment (LCA) was carried out according to the methodology proposed by the international standards of the series ISO 14040. The performance of concrete mixes having a similar design compressive strength was evaluated. Results showed that the inclusion of steel fibers (SF) led to an increase in the global warming potential (GWP), whereas mixes with cement replacement by fly ash, slag, or microsilica recorded a reduction in GWP. Furthermore, SF-reinforced mixes created with 100% RA were at least three times more expensive than the NA-based control mix, while the cost of those with cement replacement by mineral additives was generally similar to that of the control. Material transportation was found to be a main contributor to the environmental and economic impacts, only second to cement, and its contribution increased with longer distances and steel fiber incorporation and decreased with RA replacement. To integrate these individual measures and select optimum mixes for various applications, multifunctional performance indices were developed. Research findings highlight the possibility to fully replace NA with RA (100%) while maintaining the performance and improving the economic and environmental impacts of concrete produced in the UAE.

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