도심 대형사업장의 토양 입자 비산 억제를 위한 Starch와 PVA(polyvinyl alcohol)의 효율성 평가 = Efficacy of Starch and PVA (polyvinyl alcohol) for the Suppression of Soil Dust Emissions from Large-scale Construction Sites in Urban Areas

다국어 초록 (Multilingual Abstract)

Soil dust emitted from large scale construction sites in urban areas has posed a significant health threats to local residentsby exacerbating air quality. Water-spraying (moistening) is commonly practiced to lower the dust emission in constructionsites, but its long term effectiveness is highly questionable. In this study, the utility of starch and PVA(polyvinyl alcohol)was investigated in suppression of the soil dust emissions in construction sites in Seoul areas. The efficiency of the twosuppressants was tested with test soil sample in a lab-scale wind tunnel box under different concentrations of suppressantsand soil textures. Starch and PVA showed the superior ability to suppress soil dust emission as compared to moistening,resulting in PM10 and PM2.5 lower than the daily limit values of 30 and 15 μg/m3, respectively. PVA showed highersuppression capability than starch for all conditions. The test soils mixed with suppressants also showed dramaticallyenhanced aggregate stability compared to the non-treated soil.

참고문헌 (Reference)

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