The objective of this study was to effectively evaluate the effects of the demolition of existing structures by explosion on dust. It is difficult to estimate and control the dust generated by explosion, as compared to noise, vibration, and scattering particles, but it is very important to manage it since such dust could create direct problems such as civil petitions from surrounding areas against scattering dust as well as secondary pollution from any pollutant contained in the dust accumulated inside or outside the site.
In this study, measurements were taken every second from 10 demolition sites using the light scattering method for about 50 minutes before and after the explosion. Also, the general characteristics of the dust particle sizes and the maximum amount of dust generated at the time of the explosion were analyzed, because their effects on the human body vary significantly.
According to the experiment, even if a large amount of dust is generated at the time of the explosion, most of the dust particle sizes are large, so there is much less chance of people inhaling them ; and if the dust does not have heavy metal components, it will likely not harm the human body. The measures for controlling dust from explosive demolition work, the spraying method, taking into consideration the size of the instant dust particles at the time of water sprinkling, could provide netter control results.
explosive demolition, dust, PM10, PM2.5, PM1.0, TSP