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Study of permeability characteristics of open graded friction courses used in wearing courses

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dc.contributor.author Umasangar, K
dc.contributor.author Mampearachchi, WK
dc.contributor.editor Hettiarachchi, MTP
dc.date.accessioned 2022-05-18T10:48:19Z
dc.date.available 2022-05-18T10:48:19Z
dc.date.issued 2016
dc.identifier.citation Umasangar, K., & Mampearachchi, W.K. (2016). Study of permeability characteristics of open graded friction courses used in wearing courses. In M.T.P. Hettiarachchi (Ed.), Proceedings of the Civil Engineering Research Symposium 2016 (pp. 37-40). Department of Civil Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/17863
dc.description.abstract Open graded friction course (OGFC) has been used by several countries since 1950. While many countries report good performance, some countries have stopped using OGFC due to unacceptable performance and/or lack of adequate durability. High permeability is one of the important characteristics of the OGFC mixtures. There is a high possibility of fail the ordinary OGFC mixtures in tropical countries due to heavy dust content in the environment. In the absence of proper, maintenance standard of roads, there is high potential of clogging of dust in OGFC layers. So, there is a need of an improved mix design procedure to help highway agencies in successful use of OGFC. The primary objectives of this study were to evaluate the permeability characteristics of OGFC in the laboratory with various gradations and recommend a proper testing method to evaluate the performance of the OGFC mixes. Typical permeability measures (void ratio, porosity) do not indicate the pore sizes and pore distribution and pore connectivity of the mixtures. An experimental procedure has been proposed to measure the permeability under both laminar and turbulent flow conditions. Three gradations used in a previous study were analysed in the experimental setup proposed in the study. Analysis of the test results of the mixtures showed a comparison of the mixture designs with respect to the pore size and the number of pores which can be used as OGFC mixture design parameter in future. en_US
dc.language.iso en en_US
dc.publisher Department of Civil Engineering, University of Moratuwa en_US
dc.subject Open graded friction course
dc.subject OGFC
dc.subject Mix design
dc.title Study of permeability characteristics of open graded friction courses used in wearing courses en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Civil Engineering en_US
dc.identifier.year 2016 en_US
dc.identifier.pgnos pp. 37-40 en_US
dc.identifier.email wasanthak@uom.lk en_US


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  • CERS - 2016 [17]
    Civil Engineering Research Symposium 2016

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