The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.
Recycling concrete: An undiscovered source of ultrafine particles
Open accessAbstract
While concrete recycling is practiced worldwide, there are many unanswered questions in relation to ultrafine particle (UFP; Dp < 100 nm) emissions and exposure around recycling sites. In particular: (i) Does recycling produce UFPs and in what quantities? (ii) How do they disperse around the source? (iii) What impact does recycling have on ambient particle number concentrations (PNCs) and exposure? (iv) How effective are commonly used dust respirators to limit exposure? We measured size-resolved particles in the 5–560 nm range at five distances between 0.15 and 15.15 m that were generated by an experimentally simulated concrete recycling source and found that: (i) the size distributions were multimodal, with up to ∼93% of total PNC in the UFP size range; and (ii) dilution was a key particle transformation mechanism. UFPs showed a much slower decay rate, requiring ∼62% more distance to reach 10% of their initial concentration compared with their larger counterparts in the 100–560 nm size range. Compared with typical urban exposure during car journeys, exposure decay profiles showed up to ∼5 times higher respiratory deposition within 10 m of the source. Dust respirators were found to remove half of total PNC; however the removal factor for UFPs was only ∼57% of that observed in the 100–560 nm size range. These findings highlight a need for developing an understanding of the nature of the particles as well as for better control measures to limit UFP exposure.
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“There is a huge amount of waste concrete around the globe with approximately 317 MT of concrete waste in the USA, 510 MT in Europe, and 239 MT of waste in China during the period of 2009–2010 [52].”
From Nanoparticles in Construction Materials and Other Applications, and Implications of Nanoparticle Use (2019) · cites this paper as [52]
In the citing paper
“With the inclusion of nanoparticles in concrete construction and recycling, a new hazard is introduced, and the risk management plans need to be accommodating of this change [52].”
From Nanoparticles in Construction Materials and Other Applications, and Implications of Nanoparticle Use (2019) · cites this paper as [52]
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Metadata
- Authors
- Kumar, P., & Morawska, L.
- Affiliations
- University of Surrey (GB)
- Corresponding author
- Kumar, Prashant
- ORCID
- Kumar, Prashant
- Venue
- Atmospheric Environment
- Publisher
- Elsevier BV
- Published
- 2014-06
- Volume
- 90
- Pages
- 51-58
- ISSN
- 1352-2310 (ISSN-L)
- OpenAlex
- W1973229707
- Cited by
- 37
- References
- 43
- Citations by year
- 2025: 1 · 2022: 1 · 2021: 1 · 2020: 5 · 2019: 4 · 2018: 2 · 2017: 3 · 2016: 6 · 2015: 9 · 2014: 5
- FWCI
- 5.05
- Type
- journal article
- Language
- en
- Open access
- green
- eprints.qut.edu.au
- Licence
- cc-by-nc-nd
- www.elsevier.com/tdm/userlicense/1.0/ (tdm)
- Locations
- Atmospheric Environment (publishedVersion)
- QUT ePrints (Queensland University of Technology) (submittedVersion, cc-by-nc-nd)
- Surrey Research Insight Open Access (The University of Surrey) (submittedVersion)
- Institute of Health and Biomedical Innovation; Science & Engineering Faculty
- Topics
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
- Keywords
- concrete recycling, ultrafine particles, particle number concentration, particle size distribution, particle dispersion, respiratory tract deposition, dust respirators, size-resolved particles, construction dust
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