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Analysis of air void variations in hot mix asphalt wearing course mixtures used in Sri Lankan roads

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dc.contributor.author Lakmal, KHR
dc.contributor.author Mampearachchi, WK
dc.contributor.editor Pasindu, HR
dc.date.accessioned 2022-06-07T05:43:13Z
dc.date.available 2022-06-07T05:43:13Z
dc.date.issued 2015-08
dc.identifier.citation Lakmal, K.H.R., & Mampearachchi, W.K. (2015). Analysis of air void variations in hot mix asphalt wearing course mixtures used in Sri Lankan roads [Abstract]. In H.R. Pasindu (Ed.), Proceedings of the Transportation Research Forum 2015 (p. 2). Department of Civil Engineering, University of Moratuwa. https://uom.lk/sites/default/files/civil/files/TRF%202015_0.pdf en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18161
dc.description.abstract Over the past decades, the road construction with hot mix asphalt (HMA) has been increased significantly. However there were many concerns of the durability of the recently constructed asphalt concrete roads. Therefore, impotency of introduction of new quality control measures is arisen these days. The properties of the asphalt mixture as well as the construction practices are also important for the quality and the durability of asphalt pavements. The present Sri Lankan practice is measure and control of (1) Thickness, (2) Density, (3) Bitumen Content and Aggregate gradation and (4) Roughness Index (IRI) of the laid asphalt mat. The objective of this research is to find out the impotency of measuring the air void of the laid asphalt mat and the need of a combined index of the important parameters to improve the quality and durability of asphalt concrete roads. Core samples were tested at 12 locations with various initial compaction levels at two aging levels, 100 days and 225 days. In addition performance was evaluated of the road sections with various levels of initial compaction after 5 years to check the long term aging of asphalt concrete. It was found that initial air void content significantly decreased under traffic in a short period and long term performance of HMA roads cannot be evaluated by initial air void content alone. 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%202015_0.pdf en_US
dc.subject Air voids en_US
dc.subject Marshall density en_US
dc.subject Degree of compaction en_US
dc.title Analysis of air void variations in hot mix asphalt wearing course mixtures used in Sri Lankan roads 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 2015 en_US
dc.identifier.conference Transport Research Forum 2015 en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos p. 2 en_US
dc.identifier.proceeding Proceedings of the Transport Research Forum 2015 en_US
dc.identifier.email ruwin.lakmal@yahoo.com en_US
dc.identifier.email wasanthak@uom.lk en_US


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