Aerosolized particulate matter from fragmentation of carbon nanotube-enhanced concrete

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Abrahamsson, CamillaLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,LTH profilområde: Aerosoler,LTH profilområden,LTH profilområde: Nanovetenskap och halvledarteknologi,LU profilområde: Ljus och material,Lunds universitets profilområden,Other operations, LTH,Faculty of Engineering, LTH,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,LTH Profile Area: Nanoscience and Semiconductor Technology,Faculty of Engineering, LTH,LU Profile Area: Light and Materials,Lund University Profile areas,Lund University, Sweden (author)

Aerosolized particulate matter from fragmentation of carbon nanotube-enhanced concrete

Article/chapterEnglish2023

Publisher, publication year, extent ...

2023
1 s.

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LIBRIS-ID:oai:lup.lub.lu.se:3276f63b-33bc-427f-af7f-717f879b7b6c
https://lup.lub.lu.se/record/3276f63b-33bc-427f-af7f-717f879b7b6cURI
https://doi.org/10.1093/annweh/wxac087.231DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-71332URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:kon swepub-publicationtype
Subject category:ref swepub-contenttype

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Aerosoliserade partiklar från fragmentering av kolnanorörsförstärkt betong

Notes

Construction and demolition workers are exposed to high levels of particulate matter (PM) from building materials throughout their working life. Although nano-enabled building materials (NEBMs) may improve the performance and functionality of buildings, concerns are being raised regarding health risks from occupational exposure to PM from NEBMs. In this work, an experimental set-up for integrated resuspension and characterization of PM from NEBMs was developed and tested using three types of concrete (low density, normal, high strength), each enhanced with Carbon Nanotubes (CNTs) at different concentrations (0, low, high). The performance of portable devices used in occupational exposure assessments (DustTrak and NanoTracer) was compared with stationary instruments and gravimetric filter techniques. 40-70% of the mass and 90-98% of the number of particles were within the respirable fraction, with primary modes at 150 nm and 2-3 µm. Addition of CNTs significantly decreased mean particle number concentrations (PNCs) across the entire characterized size range (7 nm - 20 µm) for low density concrete, whereas the opposite was the case for normal strength and high strength concrete. It was hypothesised that the concrete matrix primarily governs the PM formation, which is in turn modulated by CNT-matrix interactions either suppressing or supporting fragmentation during crushing. SEM imaging could display partially submerged CNTs protruding from concrete fragments. Fundamental interactions at the interface of the nanomaterial and the surrounding matrix needs to be investigated to determine how the PM generated from NEBMs differ from their non-nano counterparts and how to prevent future exposure during demolition.

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Isaxon, ChristinaLund University,Lunds universitet,Metalund,Annan verksamhet, LTH,Lunds Tekniska Högskola,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,LTH profilområde: Aerosoler,LTH profilområden,Other operations, LTH,Faculty of Engineering, LTH,Other operations, LTH,Faculty of Engineering, LTH,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,Lund University, Sweden(Swepub:lu)desi-cti (author)
Hedmer, MariaLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Avdelningen för arbets- och miljömedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Tillämpad masspektrometri inom miljömedicin,Forskargrupper vid Lunds universitet,LTH profilområde: Aerosoler,LTH profilområden,Other operations, LTH,Faculty of Engineering, LTH,Division of Occupational and Environmental Medicine, Lund University,Department of Laboratory Medicine,Faculty of Medicine,Applied Mass Spectrometry in Environmental Medicine,Lund University Research Groups,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,Lund University, Sweden(Swepub:lu)ymed-mhe (author)
Kåredal, MonicaLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Avdelningen för arbets- och miljömedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Genetisk arbets- och miljömedicin,Forskargrupper vid Lunds universitet,LTH profilområde: Aerosoler,LTH profilområden,Other operations, LTH,Faculty of Engineering, LTH,Division of Occupational and Environmental Medicine, Lund University,Department of Laboratory Medicine,Faculty of Medicine,Genetic Occupational and Environmental Medicine,Lund University Research Groups,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,Lund University, Sweden(Swepub:lu)ymed-mkr (author)
Rissler, JennyRISE,Lund University,Lunds universitet,Metalund,Annan verksamhet, LTH,Lunds Tekniska Högskola,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,LTH profilområde: Aerosoler,LTH profilområden,Other operations, LTH,Faculty of Engineering, LTH,Other operations, LTH,Faculty of Engineering, LTH,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,Material- och ytdesign,Lund University, Sweden(Swepub:ri)JennyRi@ri.se (author)
NanoLund: Centre for NanoscienceAnnan verksamhet, LTH (creator_code:org_t)

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In:Abstracts from the 2022 Airmon-10 conference and the 2023 Inhaled Particles and NanOEH conference67:Supplement_1, s. i94-i952398-73162398-7308
In:Annals of Work Exposures and Health67:Supplement_1, s. i94-i95

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