Evaluation of Co-polymer Based Dust Suppressant Mixed with Soil in Unpaved Road: Lab Experiment
Fugitive dusts, which are considered as a type of the atmospheric particular matter (PM), are produced from the surface of unpaved roads. Since fugitive dusts are atmospheric PM, they can cause respiratory illness and lung damage for humans, and even lead to premature death in sensitive individuals. In order to reduce the fugitive dusts generated from the road surface, a number of dust suppressants have been tested and used in the construction industry. In this paper, a co-polymer based suppressant was used, aiming to find a good method to cope with the fugitive dust emissions. The three concentration rates of co-polymer based dust suppressants were prepared: 1%, 3%, and 5% by weight. The soil was sampled in Sedona, Arizona, USA, and was mixed with co-polymer based dust suppressants. A series of lab experiments were conducted including moisture retention tests, surface strength tests, dynamic rolling (grinding) tests, and scanning electron microscopy (SEM) imaging. Based on test results, the 5% co-polymer treated specimens showed better performance in mitigating the generation of fugitive dust emissions as compared with 0%, 1% and 3% co-polymer treated specimens.
KeywordsDust suppressants Dust control Fugitive dusts Co-polymer based solution
This research work is supported by the following grants: (1) Natural Science Foundation of Hunan Province, China (18JJ4028), (2) the Foundation of National Key Laboratory for Safety and Health of Mines sponsored by the MaanShan Institute of Mining Research CO., LTD., SinaSteel Group, China (2017-JSKSSYS-05), (3) the Industrial Collaboration Funding of Hengyang Science and Technology Program, China (2015kc58), (4) 2016 Technology Funding for Safe Production and Severe Incident Prevention (Hunan-0003-2016AQ), and (5) 2017 Technology Funding for Safe Production and Severe Incident Prevention (Hunan-0007-2017AQ), and (6) the Opening Foundation Project of Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines at Hunan University of Science and Technology, China (201405). The authors expressed their gratitude for the above funding supports. The authors also would like to thank Desert Mountain Inc. for providing polymer dust suppressants to be used in the experiments. The assistance from staff of Desert Mountain Inc. is gratefully appreciated.
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