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 |