Alternative methodologies to evaluate storage stability of rubberised bitumens

Lo Presti, D.; Memon, N.; Grenfell, J.R.A.; Airey, G.

Abstract

Tyre Rubber Modified Binders (TR-MBs), produced through the McDonald wet process and used worldwide (e.g. asphalt rubber), have demonstrated various benefits to pavements and, moreover, they represent a good opportunity for recycling tyre rubber. However this technology is still struggling to be fully adopted in Europe. One of the reasons is their poor stability during high temperature storage, which leads to high initial costs due to usage of specialised equipment. No- Agitation (storage-stable) TR-MBs is proving to be a great alternative and its development could also be the key to increase the use of tyre rubber in paving applications in Europe. This paper presents the results of a study which focuses on investigating conventional and alternative methodologies to evaluate the storage stability of TR-MBs. Results have shown that an accurate binder design is fundamental to improve compatibility of TR-MBs. Furthermore, the study highlights that Dynamic Mechanical Analysis (DMA) and X-Ray CT scans are very suitable techniques to control the compatibility of tyre-rubber bitumen blends leading to the development of storage-stable TR-MBs. © 2014 Taylor & Francis Group, London.

Citation

Lo Presti, D., Memon, N., Grenfell, J., & Airey, G. (2014, June). Alternative methodologies to evaluate storage stability of rubberised bitumens. Presented at 12th International Conference on Asphalt Pavements, ISAP 2014, Raleigh, NC

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 12th International Conference on Asphalt Pavements, ISAP 2014
• Start Date: Jun 1, 2014
• End Date: Jun 5, 2014
• Acceptance Date: Feb 4, 2014
• Online Publication Date: Jun 1, 2014
• Publication Date: Jun 1, 2014
• Deposit Date: Dec 10, 2018
• Volume: 2
• Pages: 1481-1489
• Book Title: Asphalt Pavements: Proceedings of the International Conference on Asphalt Pavements, ISAP 2014
• ISBN: 9781138027138
• DOI: https://doi.org/10.1201/b17219-180
• Keywords: DMA; Modified bitumen; Storage stability; Tyre rubber; X-ray CT; Asphalt pavements; Binders; Bituminous materials; Rubber; Stability; Tires; DMA; Modified bitumen; Storage stability; Tyre rubber; X-ray CT; Rubber applications
• Public URL: https://nottingham-repository.worktribe.com/output/1305058
• Publisher URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904135066&partnerID=40&md5=a8d5110f688930257ffcf0218dc5fc65