A fuzzy-based approach for characterization of uncertainties in emergy synthesis: an example of paved road system

Reza, Bahareh; Sadiq, Rehan; Hewage, Kasun

doi:10.1016/j.jclepro.2013.06.061

Cited by 34 publications

(17 citation statements)

References 27 publications

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“…For this study, we use centroid method that a center of a triangle is set as a defuzzified value. In emergy studies, the Fuzzy theory has been introduced for decisionmaking optimization [34] and uncertainty propagation [35].…”

Section: Fuzzy Set Theorymentioning

confidence: 99%

Uncertainty characterization of building emergy analysis (BEmA)

Braham

2015

Building and Environment

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Section: Fuzzy Set Theorymentioning

confidence: 99%

Uncertainty characterization of building emergy analysis (BEmA)

Braham

2015

Building and Environment

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“…Techniques such as artificial neural networks (Kim et al, 2004;Lee, 2003), evolutionary algorithms (Jayarama et al, 2009;Nazari, 2013;Tsai and Lin, 2011), fuzzy sets and systems (Bohlooli et al, 2012;Demir, 2005), hybrid systems (Akkurt et al, 2004;Reza et al, 2013) are just a few ex-amples among others.…”

Section: Research Significancementioning

confidence: 99%

An integrated recycling approach for GFRP pultrusion wastes: recycling and reuse assessment into new composite materials using Fuzzy Boolean Nets

Castro

Carvalho

Ribeiro

et al. 2014

Journal of Cleaner Production

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A b s t r a c tIn this study, efforts were made in order to put forward an integrated recycling approach for the ther-moset based glass fibre reinforced polymer (GPRP) rejects derived from the pultrusion manufacturing industry. Both the recycling process and the development of a new cost-effective end-use application for the recyclates were considered. For this purpose, i) among the several available recycling techniques for thermoset based composite materials, the most suitable one for the envisaged application was selected (mechanical recycling); and ii) an experimental work was carried out in order to assess the added-value of the obtained recyclates as aggregates and reinforcement replacements into concrete-polymer com-posite materials. Potential recycling solution was assessed by mechanical behaviour of resultant GFRP waste modified concrete-polymer composites with regard to unmodified materials. In the mix design process of the new GFRP waste based composite material, the recyclate content and size grade, and the effect of the incorporation of an adhesion promoter were considered as material factors and systemat-ically tested between reasonable ranges. The optimization process of the modified formulations was supported by the Fuzzy Boolean Nets methodology, which allowed finding the best balance between material parameters that maximizes both flexural and compressive strengths of final composite.Comparing to related end-use applications of GFRP wastes in cementitious based concrete materials, the proposed solution overcome some of the problems found, namely the possible incompatibilities arisen from alkalis-silica reaction and the decrease in the mechanical properties due to high water-cement ratio required to achieve the desirable workability.Obtained results were very promising towards a global cost-effective waste management solution for GFRP industrial wastes and end-of-life products that will lead to a more sustainable composite materials industry.

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“…Wesley et al constructed an uncertainty model based on lognormal distribution to reduce the error caused by emergy calculation and data error, which provided a reference for determining the main factors that affect uncertainties [80]. Reza et al used fuzzy set theory to evaluate the uncertainty of UEV and discussed effects caused by different uncertainty sources in assessment and the decision-making field [81].…”

Section: Sensitivity Analysis and Uncertainty Analysismentioning

confidence: 99%

Review of Emergy Analysis and Life Cycle Assessment: Coupling Development Perspective

Wang

Xiao

et al. 2020

Sustainability

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Two methods of natural ecosystem assessment—emergy analysis (EMA) and life cycle assessment (LCA)—are reviewed in this paper. Their advantages, disadvantages, and application areas are summarized, and the similarities and differences between these two evaluation methods are analyzed respectively. Their research progress is also sorted out. The study finds that EMA and LCA share common attributes in evaluation processes and research fields, but they focus on different aspects of macrocosms and microcosms. The assessment of system sustainability is valued by both EMA and LCA, but the former has unique advantages in natural system input analysis, and the latter is more convincing in assessing environmental loading capacity. If the system boundaries of the two methods are expanded, in other words, factors such as ecosystem services, labor, and infrastructure construction are integrated into the upstream of the target system, and environmental impact is further analyzed using LCA in the downstream of the system, the two approaches would complete each other. The quantified results would be more objective. Therefore, these two theories have the necessity of coupling development. After reviewing recent coupling application cases, the results show that LCA and EMA have commonality in the upstream of the target system (mainly in inventory database construction), while the environmental impact assessment methods are different in the downstream. So the overall coupling analysis method is not formed. The current paper gives rational suggestions on the coupling development of the two systems in terms of the aggregate emergy flow table, the indicator system construction and indicator evaluation methods. In addition, it is necessary to introduce sensitivity analysis and uncertainty analysis in order to improve the reliability of assessment results. At present, the research on the coupling development of the two theories is in rapid development stage, but there are still many problems that need further exploration.

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A fuzzy-based approach for characterization of uncertainties in emergy synthesis: an example of paved road system

Cited by 34 publications

References 27 publications

Uncertainty characterization of building emergy analysis (BEmA)

Uncertainty characterization of building emergy analysis (BEmA)

An integrated recycling approach for GFRP pultrusion wastes: recycling and reuse assessment into new composite materials using Fuzzy Boolean Nets

Review of Emergy Analysis and Life Cycle Assessment: Coupling Development Perspective

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