A Review on Improving Asphalt Pavement Service Life Using Gilsonite-Modified Bitumen

Hayder Al Hawesah, Monower Sadique, Clare Harris, Hassan Al Nageim, Karl Stopp, Harry Pearl and Ali Shubbar
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Hayder Al Hawesah: School of Civil Engineering and Built Environment Liverpool John Moores University (LJMU), Byrom Street, Liverpool L3 3AF, UK
Monower Sadique: School of Civil Engineering and Built Environment Liverpool John Moores University (LJMU), Byrom Street, Liverpool L3 3AF, UK
Clare Harris: School of Civil Engineering and Built Environment Liverpool John Moores University (LJMU), Byrom Street, Liverpool L3 3AF, UK
Hassan Al Nageim: School of Civil Engineering and Built Environment Liverpool John Moores University (LJMU), Byrom Street, Liverpool L3 3AF, UK
Karl Stopp: STOPPTECH Ltd., The Mill, Pury Hill Business Park, Alderton Road, Towcester NN12 7LS, UK
Harry Pearl: Billian UK Limited, Butterthwaite Business Park, 1a, Butterthwaite Ln, Sheffield S35 9WA, UK
Ali Shubbar: School of Civil Engineering and Built Environment Liverpool John Moores University (LJMU), Byrom Street, Liverpool L3 3AF, UK

Sustainability, 2021, vol. 13, issue 12, 1-18

Abstract: Hot mix asphalt has various benefits such as good workability and durability. It is one of the most general materials used as asphalt mixtures in road pavements. Asphalt mixtures and binders can be improved by modifying them with various additives. Gilsonite is a natural asphalt hydrocarbon which may be used as an additive to hot mix asphalt. It is used as an asphalt binder modifier (wet process) and an asphalt mixture modifier (dry process) to improve the properties of the mix. It provides the option of improved rheological properties, stability, strength rutting resistance and moisture sensitivity. This paper examines the current research relating to the use of gilsonite to improve the asphalt properties (binder and mixture). The rheological properties of the modified asphalt binders and mechanical properties of the modified asphalt mixtures will be reviewed. The influence of adding gilsonite individually or combined with other additives will be discussed. Furthermore, assessment of the environmental and economic perspectives of the studied asphalt along with some suggestions to improve the asphalt binders and mixtures will be explored.

Keywords: polymer modified asphalt; asphalt gilsonite; natural asphalt; powder asphalt (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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