A comparative study on properties of Malaysian porous asphalt mixes with different bitumen contents

Aman, Mohamad Yusri and Shahadan, Zulkurnain and Mohd Tamin, Nor Raihan (2015) A comparative study on properties of Malaysian porous asphalt mixes with different bitumen contents. Research Journal of Applied Sciences, Engineering and Technology, 9 (10). pp. 797-806. ISSN 2040-7467

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Abstract

Inadequate bitumen content in porous pavement construction may result in incomplete coating of aggregates which a thin bitumen film can oxidize rapidly resulting in premature failure of the pavement. This and presents the effects of porous asphalt prepared with 4.0% and up to 6.0% binder content with 0.5% increments binder. Bitumen penetration grade 60/70 and crushed granite were used in preparing the porous asphalt specimen. The porous asphalt mixes were compacted by applying 50 blows on each face using a Marshall Impact compactor. The specimens were tested for air voids, indirect tensile strength and water permeability and abrasion loss. The moisture sensitivity was assessed according to the AASHTO T283 procedures. The result shows that the increasing of bitumen content has decreased the, bulk density air voids, coefficient of permeability and abrasion loss values However, the Indirect Tensile Strength (ITS) has significantly increased and this is a good indication to resistance against moisture sensitivity. It can be concluded that the increasing of bitumen content in porous asphalt has increased the thickness of binder coating around the aggregates. This results reduction in air voids and water permeability, on the other hands it increases resistance to disintegration and ITS value which give better resistance to moisture sensitivity of porous specimens.

Item Type:Article
Uncontrolled Keywords:bitumen content; moisture sensitivity; porous asphalt; resistance to disintegration
Subjects:T Technology > TE Highway engineering. Roads and pavements
Divisions:Faculty of Civil and Environmental Engineering > Department of Infrastructure and Geomatic Engineering
ID Code:7262
Deposited By:Normajihan Abd. Rahman
Deposited On:27 Sep 2015 14:59
Last Modified:27 Sep 2015 14:59

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