Effects of curing on emulsion cold mix asphalts and their extracted binder

Functional Composite Materials

Frédéric Delfosse¹  Christine Leroy¹  Jean-Michel Piau²  Emmanuel Chailleux²  Amélie Thiriet²  Vincent Gaudefroy² 

[1] Routes de France, Paris, France;Université Gustave Eiffel/IFSTTAR (French institute of science and technology for transport, development and network), Nantes, France;

关键词: Curing;    Emulsion cold mix asphalt;    Binder;    Oedometer test;    Rheology;   

DOI  :  10.1186/s42252-021-00024-2

来源: Springer

【 摘 要 】

This paper focuses on the physicochemical changes that happen in cold mix asphalts during curing, and more specifically, while and after transitioning to different simulated seasons. Several tests were carried out in order to better grasp the influence of the weather (temperature and humidity) on the curing of such materials. The mechanical behaviour of the mix was assessed using oedometer tests. The physicochemical evolutions of extracted binders, such as oxidation and rheology, were evaluated. The results show stiffening of the mix and ageing of the binder linked to a higher temperature and a lower humidity. A low temperature and high moisture seem to slow down these evolutions. However the binder behaviour does not explain the whole mix behaviour as the kinetics between them are not always similar. Thus other mechanisms are yet to be found and taken into account to fully understand cold mix asphalts behaviour.

【 授权许可】

CC BY