Mix Design and Road Performance of Strong Interlocked Skeleton Close-Grained Lime-Flyash Stabilized Aggregate

Abstract:

To improve the road performance of lime-flyash stabilized aggregate (LFSA), mix design method for skeleton close-grained LFSA is proposed by the method of multi-level filling theory and particle interference theory. Road performance of it is verified by indoor test. The results show that the designed LFSA, with the mix design method of strong interlocked skeleton close-grained (SISC) LFSA proposed in this article, has good road performance. Compared with LFSA of the gradation of Chinese technical specification for construction of highway asphalt pavements (CS gradation), the late strength of LFSA of SISC gradation increases 18%, the temperature shrinkage coefficient and dry shrinkage coefficient respectively increase by 15% and 45%, the scour resistance increases by 20%. Therefore, the SISC LFSA has a broad application prospect.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 125-130
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.125
• Online since: October 2013
• Authors: Xiao He Xu, Fan Cao, Jin Shun Xue, Ying Jun Jiang
• Keywords: Lime-Fly Ash Stabilized Aggregate, Mix Design Method, Road Engineering, Road Performance, Skeleton Close-Grained Gradation, Strong Interlocked Structure

References

[1] JTG F40-2004, Technical Specification for Construction of Highway Asphalt Pavements, Ministry of Transport of the People's Republic of China, Beijing, (2004).

[2] JTG51-2009, Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering, Ministry of Transport of the People's Republic of China, Beijing, (2009).

[3] Y. Jiang. Application research of cement stabilized crushed stone base course based on vibration design method, Highway, 12 (2008) 36-41.

[4] G. Zhang, A. Sha, Z. Zhou. Proportion of cement to fly-ash in cement-fly-ash stabilized crushed-stones pavement, Journal of Chang'an University (Natural Science Edition), 27 (2007) 1-5.

DOI: 10.4028/www.scientific.net/amr.168-170.1881

[5] Y. Jiang. Mix Design Method for lime flyash stabilized aggregate of multilevel dense built-in grading structure, Journal of Chongqing Jiaotong University (Natural Science), 29 (2010) 732-736.

[6] S. Liu. Lime fly ash stabilized macadam composition design, Journal of Highway and Transportation Research and Development, 8 (2007) 49-52.