|Document ID (ISN)||111320|
|ISSN - Serial title
||1545-9624 - Journal of Occupational and Environmental Hygiene
|Convention or series no.
||Akbar-Khanzadeh F., Milz S.A., Wagner C.D., Bisesi M.S., Ames A.L., Khuder S., Susi P., Akbar-Khanzadeh M.
||Effectiveness of dust control methods for crystalline silica and respirable suspended particulate matter exposure during manual concrete surface grinding
||Dec. 2010, Vol.7, p.700-711. Illus. 28 ref.
||Concrete grinding exposes workers to unacceptable levels of crystalline silica dust, known to cause diseases such as silicosis and possibly lung cancer. This study examined the influence of major factors of exposure and effectiveness of existing dust control methods by simulating field concrete grinding in an enclosed workplace laboratory. Air was monitored during 201 concrete grinding sessions while using a variety of grinders, accessories, and existing dust control methods, including general ventilation (GV), local exhaust ventilation (LEV), and wet grinding. Findings are discussed. No combination of factors or control methods reduced an 8-hr exposure level to below the recommended criterion of 0.025 mg/m│ for crystalline silica, requiring further refinement in engineering controls, administrative controls, or the use of respirators.
||silica; airborne dust; concrete grinders; construction industry
||determination in air; exposure evaluation; wet dust control; ventilation; limitation of exposure; threshold limit values
||D - Periodical articles
Toxic and dangerous substances
|Broad subject area(s)
||Construction industry and civil engineering