Abstract
The high-modulus asphalt mixture produced by hard asphalt has played a good role in reducing asphalt pavement rutting and improving pavement durability. It was widely used in the construction of various levels of road engineering in Europe. However, low-grade hard asphalt was rarely used in road engineering in China, and the use of hard asphalt for the design and construction of high modulus asphalt mixtures lacks sufficient engineering experience. Considering the above issues, comparative research on the performance of Chinese and French low-grade hard asphalt and mixture was carried out. In this paper, the performance of French 15# hard asphalt commonly used for EME (Enrobés à Module Elevé Class) high modulus asphalt mixture and China 15# hard asphalt was analyzed comparatively, where six typical high modulus asphalt mixtures corresponding to two low-grade hard asphalts were designed referring to the design requirements of French high modulus asphalt mixtures. The road performance of a high-modulus asphalt mixture was evaluated to verify the feasibility of its application in engineering. The research results show that the performance indicators of both Chinese and French asphalts meet the requirements of binder materials used in high modulus asphalt mixtures, and the performance of their corresponding mixtures of the two asphalts also meet the specifications of high modulus asphalt mixtures. However, the two asphalts and the performance of their corresponding mixture are slightly different. The high modulus asphalt mixture of Chinese low-grade hard bitumen can be used well in road engineering applications in China. It can strongly promote the wide application of high modulus asphalt mixture in China.
Highlights
High modulus asphalt mixture refers to an asphalt mixture with a complex modulus ≥14,000 Mpa under the conditions of 15 ◦C and 10 Hz, which is derived from the French high modulus asphalt mixture EME (Enrobés à Module Elevé Class) and the high modulus asphalt mixture HMAC (High Modulus Asphalt Concrete) of the middle surface layer in the concept of permanent pavement [1,2,3]
French road workers [8,9,10,11,12,13,14,15] applied hard asphalt with a penetration of 151/10 mm to the high-modulus concrete EME structure of the bottom layer and increased the amount of asphalt to the same level as the surface layer at the same time and the results showed that the permanent deformation resistance of the high-modulus asphalt mixture produced by the hard asphalt with a degree of 151/10 mm is better than that of the SBS modified asphalt mixture, and the fatigue life is 30% longer than that of the original subsurface mixture
The following conclusions were given based on the results in this study: 1. The performance indicators of the China 15# hard asphalt meet the requirements of the binder used in the high modulus asphalt mixture
Summary
High modulus asphalt mixture refers to an asphalt mixture with a complex modulus ≥14,000 Mpa under the conditions of 15 ◦C and 10 Hz, which is derived from the French high modulus asphalt mixture EME (Enrobés à Module Elevé Class) and the high modulus asphalt mixture HMAC (High Modulus Asphalt Concrete) of the middle surface layer in the concept of permanent pavement (in the USA) [1,2,3]. French road workers [8,9,10,11,12,13,14,15] applied hard asphalt with a penetration of 151/10 mm to the high-modulus concrete EME structure of the bottom layer and increased the amount of asphalt to the same level as the surface layer at the same time and the results showed that the permanent deformation resistance of the high-modulus asphalt mixture produced by the hard asphalt with a degree of 151/10 mm is better than that of the SBS modified asphalt mixture, and the fatigue life is 30% longer than that of the original subsurface mixture. Qing Huazhou et al [5] carried out a series of high modulus asphalt mixture performance tests and road engineering application research from the aspect of mixture admixtures.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
