Enhanced fly ash use in concrete: Ex-ante LCA on an emerging electro-mass separation technology

Maes, Ben; Buyle, Matthias; Audenaert, Amaryllis; Craeye, Bart

doi:10.1016/j.clet.2021.100076

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…Several studies have developed practical methods based on Weidema's theoretical framework [4,5,23]. However, these have focused on identifying the marginal suppliers historically or in the near future.…”

Section: Introductionmentioning

confidence: 99%

Prospective consequential life cycle assessment: Identifying the future marginal suppliers using integrated assessment models

Maes,

Sacchi,

Steubing

et al. 2023

Renewable and Sustainable Energy Reviews

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Section: Introductionmentioning

confidence: 99%

Prospective consequential life cycle assessment: Identifying the future marginal suppliers using integrated assessment models

Maes,

Sacchi,

Steubing

et al. 2023

Renewable and Sustainable Energy Reviews

Self Cite

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“…One of the important uses of LCA is to assess alternative solutions in order to give environmental parameters to improve decision-making [34]. LCA results can be used to determine whether the proposed alternative is significantly better than the reference technology [35]. The LCA studies about concrete started in 2012 when Habert et al [36] determined the reduction in environmental impact by concrete strength improvements in concrete bridges.…”

Section: Introductionmentioning

confidence: 99%

LCA of Mortar with Calcined Clay and Limestone Filler in RC Column Retrofit

2022

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Cement manufacture contributes about 5–7% of the global carbon dioxide emission. The fastest short-term remedy is to replace parts of ordinary Portland cement (OPC) in concrete with supplementary cementitious materials (SCMs) to reduce CO2 emissions. Calcined clay and limestone filler have proven to be potential substitutes to good quality SCMs such as fly ash and slag because of their abundance, low cost, and potential reactivity to calcium hydroxide to form calcium silicate hydrates (C-S-H) which are responsible for the strength and other mechanical properties of concrete. A life cycle assessment (LCA) to evaluate the environmental impact of mortar with calcined clay and limestone filler in reinforced concrete (RC) column retrofitting is carried out using data from a multi-purpose complex project in Rizal province in the Philippines. A total of four retrofitting methods are evaluated based on two retrofitting techniques (RC column jacketing and steel jacketing) with two material alternatives (pure OPC-based mortar and mortar with partial replacements). Results show that RC column jacketing using patched mortar with partial replacement of calcined clay and limestone fillers is the least environmentally damaging retrofit option. The use of these SCMs resulted in a 4–7% decrease in global warming potential and a 2–4% decrease in fine particulate matter formation. Meanwhile, RC column jacketing decreased the effect on human carcinogenic toxicity by 75% compared to steel jacketing.

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“…The case study is an emerging technology called the dusty cloud separator (DCS), developed by Value Ash Technologies (VASHT) NV whose environmental benefit has been assessed in a preliminary study [3]. This separation technology aims to increase the environmental benefit of class F fly ash in the cement sector.…”

Section: Introductionmentioning

confidence: 99%

Ex-ante LCA on an emerging electro-mass separation technology: The importance of the background system

et al. 2022

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Ex-ante LCA is a novel approach that provides a way to assess the eventual environmental performance of technologies that are currently under development. Between now and the investigated time several changes may have occurred to the foreand background system, which may affect the results of the assessment. If this is the case, such changes should be integrated in to the life cycle inventory. The goal of this study was to determine how influential those changes are to the foreground system and if it is relevant to apply a cornerstone scenario approach when assessing potential changes. This is analysed using an emerging electro-mass separation technology as a case study. This technology can separate fly ashes based on their particle size. The main benefit of the technology lies in the ultra-fine fly ashes that are produced, which can be used to produce Ultra-High-Performance Concrete. Results showed a considerable difference between the reference and mitigation scenarios, and a smaller but still noticeable difference between the different mitigation pathways.

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Enhanced fly ash use in concrete: Ex-ante LCA on an emerging electro-mass separation technology

Cited by 6 publications

References 17 publications

Prospective consequential life cycle assessment: Identifying the future marginal suppliers using integrated assessment models

Prospective consequential life cycle assessment: Identifying the future marginal suppliers using integrated assessment models

LCA of Mortar with Calcined Clay and Limestone Filler in RC Column Retrofit

Ex-ante LCA on an emerging electro-mass separation technology: The importance of the background system

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