Worker exposure to ultrafine particles in asphalt laboratory

Somayeh Asadi, Marwa M. Hassan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Air pollution is a public health issue that may cause health problems for workers in the construction industry including workers involved in asphalt paving operations. Epidemiological studies have reported an increase loss of lung function among asphalt workers over the asphalt paving season. Therefore, the goal of this study is to quantify and characterize nanoparticle and ultrafine particle exposure to workers during asphalt mixture preparation activities in an asphalt laboratory. Scanning Mobility Particle Sizer (SMPS) was used to measure the size distribution, surface area, mass, and particle concentrations during pouring, mixing, and compaction activities. Particles were also characterized using Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) to get a better understanding of their particle size and morphology. Based on the results of the study, the highest number of particles was observed during the pouring process. Laboratory measurement showed that more than 70% of particles in asphalt preparation activities were ultrafine particles, which have diameter smaller than 0.1 micrometer. In addition, the size of the particles obtained by SMPS was compared to the particle size based on the TEM analysis. The estimated sizes obtained by TEM analysis in the asphalt workplace study were in agreement with the estimate size obtained by calculations using SMPS.

Original languageEnglish (US)
Title of host publicationAsphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014
PublisherTaylor and Francis - Balkema
Pages41-47
Number of pages7
ISBN (Print)9781138027121
DOIs
StatePublished - Jan 1 2014
Event12th International Conference on Asphalt Pavements, ISAP 2014 - Raleigh, NC, United States
Duration: Jun 1 2014Jun 5 2014

Publication series

NameAsphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014
Volume1

Other

Other12th International Conference on Asphalt Pavements, ISAP 2014
CountryUnited States
CityRaleigh, NC
Period6/1/146/5/14

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Architecture

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    Asadi, S., & Hassan, M. M. (2014). Worker exposure to ultrafine particles in asphalt laboratory. In Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014 (pp. 41-47). (Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014; Vol. 1). Taylor and Francis - Balkema. https://doi.org/10.1201/b17219-12