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Effective DGAB construction techniques for optimizing segregation during compaction process

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dc.contributor.author Ariyarathne, KVRK
dc.contributor.author Mampearachchi, WK
dc.contributor.editor Pasindu, HR
dc.date.accessioned 2022-06-09T10:57:50Z
dc.date.available 2022-06-09T10:57:50Z
dc.date.issued 2012-07
dc.identifier.citation Ariyarathne, K.V.R.K., & Mampearachchi, W.K. (2013). Effective DGAB construction techniques for optimizing segregation during compaction process [Abstract]. In H.R. Pasindu (Ed.), Proceedings of the Transportation Research Forum 2012 (p. 7). Department of Civil Engineering, University of Moratuwa. https://uom.lk/sites/default/files/civil/files/TRF%20book%202012%20-e-copy_0.pdf en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18250
dc.description.abstract Road construction in Sri Lanka widely uses Graded Aggregate (Dense Graded Aggregate Base - DGAB) for base construction with RDA specified Gradation requirements. But in loading, transporting, unloading, handling and in construction processes the segregation occurs deviating specified gradation. This study covered investigation on DGAB segregation during layer compaction by focusing; (1) What factors contribute to segregation of DGAB Layers, (2) The relationship between compaction effort and segregation, (3)The co-relations between water content, compaction effort and the extent of segregation , (4) To find out practical measures to control / minimize segregation effect in layer compaction In site trials it is generally observed that following segregation effects present and those make compacted layer non-uniform throughout its depth, (1) Fine particles tend to migrate upward while course particles remain at underneath layers at high water content. And (2) Fine Particles tend to settle down at dry condition Compaction trials were done in both thin (App. 150mm Loose) and thick layers (App. 225mm Loose). A number of factors like layer thickness, water content at compaction, the type of roller used (weight, with or without vibration) gives a major impact on particle dislocation and to the extent of segregation. en_US
dc.language.iso en en_US
dc.publisher Department of Civil Engineering, University of Moratuwa. en_US
dc.relation.uri https://uom.lk/sites/default/files/civil/files/TRF%20book%202012%20-e-copy_0.pdf en_US
dc.subject Dense grade aggregate base segregation
dc.subject Road construction
dc.title Effective DGAB construction techniques for optimizing segregation during compaction process en_US
dc.type Conference-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Civil Engineering en_US
dc.identifier.year 2012 en_US
dc.identifier.conference Transport Research Forum 2012 en_US
dc.identifier.place Colombo en_US
dc.identifier.pgnos p. 7 en_US
dc.identifier.proceeding Proceedings of the Transport Research Forum 2012 en_US
dc.identifier.email wasanthak@uom.lk en_US


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