 ISSN 1392-110X ISSN 2029-056X (online) |
2009 m. Nr. 1-2 Investigation of particulate matter and chloride concentrations in the environment of gravelled roads
The main problem related to gravelled roads is their dustability during the warm season of the year. The formation of dust is mainly predetermined by traffic intensity, climatic factors and the quality of gravel applied. A large variety of treatment materials and methods are applied to deal with the problem of dustiness. Bituminous emulsion and calcium chloride are among the most popular and widespread materials used to reduce dustiness in Lithuania. The article presents the findings obtained from the investigation of gravelled-road sections treated and untreated with different materials reducing dustiness in different regions of Lithuania. According to these findings, when inserted in the paving of gravelled roads, bituminous emulsion is most effective in reducing dustiness: its effectiveness reaches up to 95%. When impacted by precipitation, calcium chloride is leached out of the top layer of the treated gravelled road paving, and its efficiency in binding particulate matters reaches 17–25%. Keywords: particulate matter, gravelled roads, dustiness reduction, bituminous emulsion, calcium chloride, roadside soil |
Issues:
2011 - Vol.53 No. 1, No. 2, No. 3 2010 - Vol.52 No. 1-4 2009 - Vol.51 No. 1-2, No. 3-4 2008 - Vol.50 No. 1, No. 2, No. 3, No. 4, No. Priedas 2007 No. 1, No. 2, No. 3, No. 4 2006 No. 1, No. 2, No. 3, No. 4 2005 No. 1, No. 2, No. 3, No. 4 2004 No. 1, No. 2, No. 3, No. 4 2003 No. 1, No. 2, No. 3, No. 4 2002 No. 1, No. 2, No. 3, No. 4 2001 No. 1, No. 2, No. 3, No. 4 |