606
Views
28
CrossRef citations to date
0
Altmetric
Articles

Comparative laboratory evaluation of waste cooking oil rejuvenated asphalt concrete mixtures for high contents of reclaimed asphalt pavement

ORCID Icon &
Pages 1297-1308 | Received 19 Feb 2018, Accepted 14 Oct 2018, Published online: 10 Nov 2018
 

ABSTRACT

This study focuses on the ability of waste cooking oil (WCO) to recycle old asphalt pavement into new pavements. The application of WCO was contemplated in the pavement materials to reduce the stiffness effect of reclaimed asphalt pavement (RAP). Following the Marshall's method, a detailed laboratory investigation was conducted to evaluate some of the properties of the WCO rejuvenated mixture and compared with the mixture without any RAP (SM) and the mixtures rejuvenated by a commercial rejuvenator (CR). For this comparison, laboratory tests of indirect tensile strength (ITS), percentage of ITS loss and resilient modulus (MR) were conducted following the respective standard method. Three different percentages (13%, 20% and 27%) of WCO (by RAP binder content) were evaluated for three different percentages of RAP mixture (30%, 40% and 50%). The statistical analysis of variance (ANOVA) was applied to quantify the effect of the WCO and the percentage of RAP on the mentioned properties of the rejuvenated mixture. It is observed that the values for ITS, percentage of ITS loss and MR of the WCO rejuvenated mixtures are compatible with those of the mixtures rejuvenated by CR and SM. However, the compatibility exists till a certain extent of RAP and WCO, and the increase in the percentage of RAP (>40%) and WCO (>13%) in the mixtures results in a deviation from the observed properties.

Acknowledgments

The authors would like to thank Qatar University (QU) and King Fahd University of Petroleum and Minerals (KFUPM) for their assistance in this research.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by Qatar University and King Fahd University of Petroleum and Minerals.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.