Comparative evaluation of ageing effects on the properties of regular and highly polymer modified asphalt binders

Autor:	Edith Arámbula-Mercado, Pravat Karki, Diana B. Sánchez, Silvia Caro, Carlos Rivera
Rok vydání:	2021
Předmět:	Polymer modified chemistry.chemical_classification Materials science chemistry Asphalt General Materials Science Building and Construction Polymer Composite material Material properties Durability Civil and Structural Engineering Comparative evaluation
Zdroj:	Construction and Building Materials. 302:124163
ISSN:	0950-0618
DOI:	10.1016/j.conbuildmat.2021.124163
Popis:	The use of polymer modified asphalt is steadily growing due to the increasing loading demands in asphalt pavements. Although common polymer modification doses range between 2.5 and 3.5% by weight of asphalt binder, higher dosages are being increasingly used to enhance the performance and durability of asphalt mixtures. These higher doses range between 7 and 8% by weight of asphalt, and the resulting binders are denoted as highly or heavily modified asphalts (HiMA or HP). The objective of this work is to characterize and compare different fundamental material properties and the expected mechanical performance of a regular polymer modified and a HiMA asphalt at the binder and mastic levels, under different ageing conditions. The results confirm an enhanced expected long-term mechanical performance of the HiMA asphalt in road projects as compared to conventional polymer modified binders.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a365a8ccfcd4a3b03f37ca07ef765d79 https://doi.org/10.1016/j.conbuildmat.2021.124163 Zobrazit plný text záznamu Full Text from ScienceDirect