dc.contributor.author	Rusbintardjo, Gatot
dc.date.accessioned	2024-08-21T15:10:46Z
dc.date.available	2024-08-21T15:10:46Z
dc.date.issued	2011
dc.description	Thesis (PhD. (Civil Engineering))
dc.description.abstract	The objective of this study was to investigate the feasibility of using oil palm fruit ash (OPFA) as a bitumen modifier, to formulate the mix between OPFA and bitumen as a new binder with better physical and mechanical properties, and to evaluate the use of OPFA-modified bitumen (OPFA-MB) as a binder of stone mastic asphalt (SMA). In this study two sources of bitumen, bitumen B-1 and bitumen B-2 each had penetration grade 80/100 were modified by using OPFA. The bitumen was mixed with 2.5%, 5%, 7.5%, 10%, 12.5%, and 15% OPFA by weight of the bitumen at mixing temperature 160°C, mixing time 60 minutes, and mixing stirring speed 800 revolution per minute. There were two types of OPFA, Fine and Coarse-OPFA. FineOPFA was OPFA which had uniform particle size 75µm, and Coarse-OPFA was OPFA which had graded particle with maximum grains size 600µm. The bitumen mixed with OPFA was called OPFA-modified bitumen (OPFA-MB). There were four types of OPFA-MB namely Fine-OPFA-MB1, Coarse-OPFA-MB1, FineOPFA-MB2, and Coarse-OPFA-MB2. Each type of OPFA-MB had six OPFA content. For all of OPFA-MB penetration test at 25°C, softening point test, and viscosity test at 60°C and 135°C were conducted to determine penetration index (PI) and penetration-viscosity number (PVN). The results show that all OPFA-MB were not susceptible to the changes of temperature. Rheology test using dynamic shear rheometer (DSR), bending beam rheometer (BBR), and direct tension tester (DTT) show that OPFA-MB with the content of fine-OPFA 5%, 2, 5%, and 10% can withstand rutting at a temperature of 70°C, withstand fatigue cracking at a temperature of 20°C, and resist to thermal cracking at a temperature of -15°C. Using in stone mastic asphalt (SMA-14) mixtures resulted in higher Marshall stability than the minimum specification requirements. Resilient modulus, creep, and wheel tracking rutting tests show that OPFA-MB can strengthen SMA-14 mixtures. Static immersion test, boiling water and drain-down test show that OPFA-MB has good adhesion to bind aggregate. Based on penetration value and the results of rheology testing, OPFA-MB can be categorized as binder penetration grade 60/700 and Superpave bitumen grade PG 70 – 16. Overall test results suggest that OPFA is feasible to be used as modifier of the bitumen, and as a binder for stone mastic asphalt.
dc.description.sponsorship	Faculty of Civil Engineering
dc.identifier.uri	https://openscience.utm.my/handle/123456789/1320
dc.language.iso	en
dc.publisher	Universiti Teknologi Malaysia
dc.subject	Bituminous materials—Testing
dc.subject	Binders (Materials)
dc.subject	Penetration mechanics
dc.title	Bitumen modification using oil palm fruit ash for stone mastic asphalt
dc.type	Thesis
dc.type	Dataset

Bitumen modification using oil palm fruit ash for stone mastic asphalt

Files

Original bundle

License bundle

Collections