Characterization of nano particles released during asphalt and concrete laboratory activities

Somayeh Asadi, Marwa M. Hassan, Heather Dylla

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

1 Scopus citations

Abstract

Ultra-fine particles are increasingly being recognized as a potential threat to health. Aerosols in workplace environments may come from a wide variety of sources, depending on the type of activity and processes taking place. To quantify the level of risks associated with engineered nanomaterials, research needs to first quantify the level of nanoparticles' exposure encountered in different construction activities. Therefore, the objective of this study is to evaluate the potential inhalation exposure risk associated with Hot-Mix Asphalt (HMA) and concrete preparation activities in the laboratory. To achieve this objective, the number concentration, size distribution, surface area, and mass concentration were measured for different activities including dry mixing, wet mixing, pouring, and compaction in an asphalt and concrete laboratory using a Scanning Mobility Particle Sizer (SMPS). In addition, Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) characterized the morphology, shape, and measure the primary size distribution of the particles. The estimates obtained by TEM analysis in the workplace study were similar to the estimates obtained by calculations using SMPS for the experimental study.

Original languageEnglish (US)
Title of host publicationConstruction Research Congress 2012
Subtitle of host publicationConstruction Challenges in a Flat World, Proceedings of the 2012 Construction Research Congress
Pages2379-2388
Number of pages10
DOIs
StatePublished - Sep 19 2012
EventConstruction Research Congress 2012: Construction Challenges in a Flat World - West Lafayette, IN, United States
Duration: May 21 2012May 23 2012

Publication series

NameConstruction Research Congress 2012: Construction Challenges in a Flat World, Proceedings of the 2012 Construction Research Congress

Other

OtherConstruction Research Congress 2012: Construction Challenges in a Flat World
CountryUnited States
CityWest Lafayette, IN
Period5/21/125/23/12

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction

Fingerprint Dive into the research topics of 'Characterization of nano particles released during asphalt and concrete laboratory activities'. Together they form a unique fingerprint.

Cite this