Chemical modification of waste cooking oil to improve the physical and rheological properties of asphalt binder

Wan Azahar, Wan Nur Aifa and Putra Jaya, Ramadhansyah and Hainin, Mohd Rosli and Bujang, Mastura and Ngadi, Norzita (2016) Chemical modification of waste cooking oil to improve the physical and rheological properties of asphalt binder. Construction and Building Materials, 126. pp. 218-226. ISSN 0950-0618

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Abstract

The performance of asphalt binder modified with waste cooking oil (WCO) is affected by the quality of the WCO itself because of the degradation process during frying activity. The quality of WCO can be determined by conducting an acid value test, wherein an increased acid value has caused the decreasing of rheological performance. Therefore, untreated WCO with a high acid value is chemically modified and pre-treated with alkaline catalysts to undergo transesterification. The transesterification of WCO is performed as a pre-treatment to reduce high free fatty acid (FFA) content, which is equivalent to the acid value. The treated WCO sample undergoes a chemical test (acid value), physical test (penetration and softening test), and rheological test through a dynamic shear rheometer (DSR). The rheological performance of rutting, which is analyzed using DSR, is compared between the untreated and treated WCO to determine any improvement in rutting resistance after chemical modification. Results show that the acid value reduces from 1.65 mL/g to 0.54 mL/g after the chemical treatment of WCO. The decrease in acid value affects the improvement of penetration, softening point test, and rheological performance test, wherein increased failure temperature is achieved at 70 °C for treated WCO compared with the untreated WCO at 64 °C.

Item Type:	Article (Journal)
Additional Information:	8800/80110
Uncontrolled Keywords:	Asphalt binder, WCO, Acid value, Physical, Rheological performance
Subjects:	T Technology > TE Highway engineering. Roads and pavements T Technology > TE Highway engineering. Roads and pavements > TE250 Pavement and paved roads
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Civil Engineering Kulliyyah of Engineering
Depositing User:	Dr. WAN NUR AIFA WAN AZAHAR
Date Deposited:	28 Apr 2020 09:47
Last Modified:	28 Apr 2020 09:47
URI:	http://irep.iium.edu.my/id/eprint/80110

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