2022
DOI: 10.58286/27220
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Sorting of construction and demolition waste by combining LIBS with NIR spectroscopy

Abstract: Closed material cycles and unmixed material fractions are required to achieve high recovery and recycling rates in the building industry. In construction and demolition waste (CDW) recycling, the preference to date has been to apply simple but proven techniques to process large quantities of construction rubble in a short time. This is in contrast to the increasingly complex composite materials and structures in the mineral building materials industry. Manual sorting involves many risks and dangers for the exe… Show more

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Cited by 3 publications
(3 citation statements)
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“…The increasing diversity of CDW makes it more difficult to distinguish between the many components. Manual sorting exposes the executing crew to several risks and depends exclusively on visually visible differences for separation ( Klewe et al, 2022 ). In addition, to properly apply circular economy in a construction company, numerous dimensions, such as social, governmental, economic, behavioural, technological and environmental factors, must be clarified in detail.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The increasing diversity of CDW makes it more difficult to distinguish between the many components. Manual sorting exposes the executing crew to several risks and depends exclusively on visually visible differences for separation ( Klewe et al, 2022 ). In addition, to properly apply circular economy in a construction company, numerous dimensions, such as social, governmental, economic, behavioural, technological and environmental factors, must be clarified in detail.…”
Section: Resultsmentioning
confidence: 99%
“…To tackle such barriers, according to many researchers ( Ghisellini et al, 2018 ; Klewe et al, 2022 ; López Ruiz et al, 2020 ; Mercader-Moyano et al, 2022 ; Mohammadiziaz and Bilec, 2023 ; Papamichael et al, 2022 ; Purchase et al, 2022 ), a holistic circular economy model must include (i) policies and strategies regarding the industry; (ii) sustainable by design waste management practices (including waste prevention, deconstruction, collection and segregation practices, on-sire sorting, efficient distribution of resources, transportation, etc. ); (iii) implementation of R strategies of circular economy like repair (return used products to working conditions), refurbish (improve quality of used products), remanufacture (implementation of specific standards for remanufacturing used products), recycling (use of recycled or recyclable materials), reuse (CDW reuse where applicable) and material recovery (recover of materials or energy) for end-of-life management and (iv) monitoring of CDW accumulation through key metrics and tools (i.e.…”
Section: Resultsmentioning
confidence: 99%
“…Since the LIBS system is currently still under construction, an at-line LIBS system (concrete-LIBS, Secopta analytics) was used instead. Data acquisition for LIBS data including processing steps and feature extraction have already been presented in [10]. For hyperspectral data the spectra were first smoothed (Savitzky-Golay filter) and baseline corrected (convex hull).…”
Section: Classificationmentioning
confidence: 99%