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Impact of fine mate...
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Edvardsson, KarinHögskolan Dalarna,KTH,Väg- och banteknik,Byggteknik
(författare)
Impact of fine materials content on the transport of dust suppressants in gravel road wearing courses
- Artikel/kapitelEngelska2011
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LIBRIS-ID:oai:DiVA.org:kth-12358
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12358URI
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https://doi.org/10.1061/(ASCE)MT.1943-5533.0000282DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:du-10430URI
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Språk:engelska
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Sammanfattning på:engelska
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QC 20100616. Updated from submitted to published 20120326. Previous title: Transport of Dust Suppressants in Gravel Road Wearing Courses Related to Fine Material Content
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A significant problem when dust-suppressing agents are used on gravel roads is that they tend to leach during rainfall. The purpose of this study is to illustrate this problem by using laboratory studies and studies in situ. Both capillary rise and leaching of suppressants were examined by using cylinders filled with wearing course material. Chloride was more prone than lignosulphonate to transport upwards by means of capillary rise, and therefore, it showed a more effective performance over a longer period of time. Optimal percentages of fine material for minimal lignosulphonate and chloride leaching were found to be 15% by weight and 10-15% by weight, respectively. Ions of calcium chloride seemed to flocculate clay particles, which probably prevents them from leaching. To study the in situ longevity of fine material in general, calcium carbonate, mesa, was used as a marker. The fine material in gravel wearing courses must be replenished regularly. Mesa loss was up to 80% after 1 year.
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Magnusson, RolfHögskolan Dalarna,Vägteknik(Swepub:du)rmg
(författare)
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KTHVäg- och banteknik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of materials in civil engineering23:8, s. 1163-11700899-15611943-5533
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