RESEARCH ARTICLE


Research on Design Technology of TLA Modified Asphalt Mixture



Xinjun Feng*, 1, Xudong Zha1, Peiwen Hao1
1 School of Communication and Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, China
2 School of Highway, Chang'an University, Xi'an 710064, China


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© 2011 Feng et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Communication and Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, China; Tel: +86-731-85258575; Fax: +86-731-85258375; E-mails: fxjasphalt@yahoo.com.cn, fxjasphalt@sina.com


Abstract

Marshall Test design methods are used to design TLA modified asphalt mixture and base asphalt mixture respectively, and their pavement performance is tested. The results showed that there is a transforming coefficient of 1.15 between OAC of 40% TLA modified asphalt mixture and that of base asphalt mixture, and ultimate gradation of the TLA modified asphalt mixture is finer than previous gradation. TLA modified asphalt mixture has excellent high temperature stability, capacity of moisture-resistance damage and impermeability. So it can be applied to asphalt pavements engineering of expressway in China.

Keywords: TLA, modified asphalt mixture, mixture design, pavement performance, , , .