JAUE2018-084 Estimation of Secondary Scattering Asbestos Fibers Generated from Damaged ACBM in the Event of a Disaster

Abstract

Asbestos has been used in many types of building materials. It is not normally hazardous, but it can have a very harmful effect on human health if a disaster such as a building collapse occurs. Therefore, in this study, we aimed to quantify the generation of secondary asbestos dust that affects workers after the collapse of a building. To do so, 
actually damaged ACBM was used to carry out an experiment on scattering asbestos fibers in a laboratory chamber. The SEM and EDX analyses verified the presence of secondary scattering asbestos dust. As a result of analyzing the concentration of secondary scattering asbestos dust over time, the maximum concentration value was found to 
be 0.162 f/cc (elapsed time: 0), and the minimum value was found to be 0.119 f/cc (elapsed time: 36). These results showed that secondary scattering asbestos fiber concentrations exceeded the permissible limit set by most countries. 
Therefore, it is necessary to establish appropriate measures to reduce scattering asbestos fibers for the protection of workers and the health of residents in the areas surrounding the site of a building collapse. This study will significantly contribute to the protection of workers at the disaster site and the human health of residents in the surrounding areas by quantifying the amount of secondary asbestos dust generated.