Khan, Md Zahid Hossain and Koting, Suhana and Katman, Herda Yati Binti and Ibrahim, Mohd Rasdan and Babalghaith, Ali Mohammed and Asqool, Obada (2021) Performance of high content reclaimed Asphalt Pavement (RAP) in asphaltic mix with crumb rubber modifier and waste engine oil as rejuvenator. Applied Sciences, 11 (11). ISSN 2076-3417, DOI https://doi.org/10.3390/app11115226.
Full text not available from this repository.Abstract
The utilisation of reclaimed asphalt pavement (RAP) as a suitable substitute for natural aggregate and binder offers an energy-saving and cost-effective approach to enhance the performance of asphalt mix. Realising the potential use of RAP as a promising recycling technique, many countries are seeking to recycle RAP as part of the global effort to address the rising challenge of climate change and contribute to a sustainable environment. This study aimed to develop an integrated approach to determine the amount of RAP to be used in an asphaltic concrete wearing course with 14 mm nominal maximum aggregate size (ACW14). The RAP was incorporated with two waste materials comprising waste engine oil (WEO) as a rejuvenator and Crumb Rubber (CRM) as a binder modifier. A total of five different mixes, which include R0 (control mix), R30, R50, R70, and R100 (replacement of 30%, 50%, 70%, and 100% of RAP aggregates in the mix, respectively) were evaluated. The Marshall parameters, resilient modulus (M-R), indirect tensile fatigue, moisture susceptibility, and mass loss (ML) tests were conducted to investigate the performance of each mix. Finally, an arbitrary scale was developed to optimise the RAP content. The results showed that the Marshall parameters, moisture susceptibility, and ML values of the RAP mixes met the criteria outlined in the standard. According to the M-R performance, the R50, R70, and R100 mixes were more resilient than the R0. In terms of fatigue resistance, the R30, R50, and R70 mixes showed better performance than the R0. Overall, the collective performance of all RAP mixes was above the R0 and it increased with the increment of RAP content. Therefore, it was possible to design ACW14 mixes with up to 100% RAP in combination with WEO and CRM.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya, grant name "Others MOHE-Top 100 (IIRG)-IISS" [IIRG009C-19IISS], Universiti Tenaga Nasional (UNITEN), Malaysia [BOLD 2020RIO10517844/046], Local Government Engineering Department, Bangladesh |
| Uncontrolled Keywords: | Reclaimed asphalt pavement; ACW14 mix; Hot mix asphalt; Waste engine oil; Crumb rubber modifier |
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 04 Aug 2022 02:31 |
| Last Modified: | 04 Aug 2022 02:31 |
| URI: | http://eprints.um.edu.my/id/eprint/28401 |
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