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Articles by R. Muniandy
Total Records ( 2 ) for R. Muniandy
  R. Muniandy , H. Jafariahangari , R. Yunus and S. Hassim
  Due to the high oil prices the price of asphalt binder has increased tremendously. This scenario has warranted demand for higher viscosity cheaper asphalt for pavement construction. A study was conducted to take advantage of the Empty Fruit Bunch (EFB) of Date and Oil Palm trees (which are considered as waste) to produce cellulose fiber to be used as additives in the asphalt binder. If these EFB’s could be beneficially utilized in any application, it would reduce the load on the nation’s landfills and at the same time reducing the cost of road construction. A total of 11 blends were prepared that consisted of 5 blends with date palm fiber, 5 blends with oil palm fiber and one control sample that contained no fibers. The samples were evaluated using Dynamic Shear Rheometer (DSR) equipment in accordance with the superpave Strategic Highway Research Program (SHRP) requirements. The neat asphalt binders (Unaged), Rolling Thin Film Oven (RTFO) aged and Pressure Ageing Vessel (PAV) samples were then measured for phase angle, shear strain and complex shear modulus and then evaluated in accordance with SHRP requirements. The results indicated that the fibers enhanced the rheological performance of Bio Mastic Asphalt (BMA) blends. The control sample which was categorized as PG58 was enhanced to PG76 with 0.375% date palm fiber. The oil palm has also improved the blend up to PG70 with 0.3% oil palm fiber.
  R. Muniandy , Eltaher Aburkaba , R. Yunus , H. Hamid and H. Salihudin
  The performance of fillers in Stone Mastic Asphalt (SMA) pavements is unclear due to the various interaction effects of filler with asphalt binders, depending on the filler percentage, type and particle size. In this study, a laboratory investigation was conducted on the properties of asphalt binder and filler as a function of type and particle size. One asphalt binder and four filler types with different mineralogy were selected to assess the filler particle size and type effect. The selected fraction of mineral filler was blended with the asphalt binder in three different size proportions of 100/0, 50/50 and 0/100 passing the 75/20 micron sieve. To investigate the influence of filler particle size and type on mastics rheological and performance properties, Dynamic Shear Rheometer (DSR) was used over a broad range of temperatures and aging. The data obtained from this study led to the evaluation of the effects of filler type and the particle size on mastic performance. The analysis of data at the given filler/asphalt ratio showed that medium to coarse particle size filler improves the rutting and the coarse to medium particle size improves the fatigue cracking resistance of the tested mastics. Furthermore, the results from this study indicated that the fine particle size mastics seemed to lead a lower viscosity, higher penetration and lower softening point. The ceramic filler regardless the particle size was found to be more effective on producing mastics that are more elastic and less susceptible to rutting and cracking than the control mastic.
 
 
 
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