Evaluation of Anti-Stripping Agents on Warm Porous Asphalt Mixtures

Aman, Mohamad Yusri; Hamzah, Meor Othman
July 2014
Australian Journal of Basic & Applied Sciences;Jul2014, Vol. 8 Issue 10, p437
Academic Journal
The presence of water in porous asphalt mixtures detrimentally affects the bonding within the binder and bonding between the binder and the aggregates which is prone to stripping. The purpose of this paper is to evaluate the effectiveness of anti-stripping agents in improving water sensitivity of porous asphalt mixes prepared using Sasobit® modified bitumen. Hydrated lime and a newly developed anti-stripping agent known as Pavement Modifier (PMD) as filler were investigated. Specimens were compacted by applying 35 blows on each face using Marshall Impact compactor at various compaction temperatures. Subsequently, the specimens were tested for their strength, air voids and indirect tensile strength ratio (ITSR). The results indicated that the specimens incorporating PMD exhibit higher ITS and better resistance to water sensitivity compared to specimens containing hydrated lime. It can be concluded that samples prepared with PMD have better resistance to moisture damaged as compared to samples with hydrated lime.


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