Evaluation of moisture damage of palm oil fuel ash (pofa) as filler in hot mix asphalt (HMA)

Shamshudin, Mustafa Kamal and Abdullah, Mohd Ezree and Ahmad Zamhari, Kemas and Amkaromi, Nor Azlina (2009) Evaluation of moisture damage of palm oil fuel ash (pofa) as filler in hot mix asphalt (HMA). In: Simposium XII Forum Studi Transportasi Antara Perguruan Tinggi, 14 November 2009, Surabaya Indonesia.

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Abstract

The Hot Mix Asphalt ( H M A ) can be characterized as a combination of three phases: air voids, coarse aggregate, and asphalt matrix ( A M ) , w h i c h includes binder and fine aggregate. This study focuses on the characterization of the moisture damat < I I MA containing Palm Oil Fuel Ash (POFA) as a filler material. Marshall design method was utilized io chimin (he optimum bitumen content of HMA. Different percentages of POFA were added to HMA prior to t h e 1 1 : i nnce test to determine the optimal POFA dosage. The mixtures were prepared using granite aggregates I |vnc:ration grade 8 0 - 1 0 0 binder. Marshall specimens were tested using the universal testing machine to d • •'; • I: i ••. the initial stiffness modulus and the stiffness modulus after the conditioned period (retained stiffness m o d u l u s ) based on the I n d i r e c t Tensile Stiffness Modulus (ITSM) test method. The analysis revealed that the POFA significantly improves the visco-elastic response of the moisture damaged resistance of AM. The stiffness m o d u l u s of the H M A i m p r o v e d ' ^ to improvement of the AM with the additional of POFA. The most effective : c : 'i e of P O F A as ' ! ; -.aerial is ranging from 50 to 75 % respectively. The study founds that the ITS 1 t -w w : h o d combining- -,\ I AASHTO T-283 conditionings is suitable to distinguish the lab-measured mois -e > tibility o f H M A U palm oil fuel ash (POFA) as a filler material. Besides that, it is a good potenti; f POFA as a fillc- ial to the enhancement of the moisture damage resistance of HMA.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:moisture damage; palm oil fuel ash(POFA); filler; stiffness modulus
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA703-711 Engineering geology. Rock mechanics. Soil mechanics.
Divisions:Faculty of Civil and Environmental Engineering > Department of Transport and Geotechnique Engineering
ID Code:1990
Deposited By:Khairunnisa Ahmad
Deposited On:05 Oct 2011 10:21
Last Modified:05 Oct 2011 10:21

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