Evaluation of Saw Blade Designs on Controlling Dust from Cutting Fiber-cement.

ABSTRACT: Fiber-cement can contain as much as 50% crystalline silica and cutting this material has shown to cause excessive exposures to respirable crystalline silica. We conducted this study to evaluate different saw blades for cutting fiber-cement siding, aiming at identifying blade design features that lead to lower dust release. Through laboratory evaluations of 22 saw blades, the releasing rate of respirable dust, i.e., G_APS, was analyzed and compared with and without engineering control measures. Two on-tool passive control measures were specifically evaluated. First, a dust-collecting box with a capped exhaust port was attached to the circular saw. Second, the dust-collecting box was connected to a passive dust collector, which includes a cyclone dust collector and an air filter. B

SUBMITTER: Qi C 

PROVIDER: S-EPMC11951340 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature