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2019 Vol.9, Issue 2 Preview Page

Scientific Paper

Effects of anti-strip additives on binder stiffness of polymer-modified asphalt mixture
Sungun Kim1
,
Yeongsam Kim2
,
Wonbae Kim3
,
Kyung-Jin Kim4
,
Kwang Woo Kim5*
1Senior Research Engineer, Institute for Advanced Construction Materials, Kangwon National University
2Ph. D. Student, Department of Regional Infrastructure Engineering, Kangwon National University
3Research Engineer, Institute for Advanced Construction Materials, Kangwon National University
4Professor, Division of Civil, Environmental & Urban-Transportation Engineering, Korea National University of Transportation
5Professor, Department of Regional Infrastructure Engineering, Kangwon National University
* Corresponding Author
31 December 2019. pp. 234-243
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Abstract

This study evaluated aging level of polymer-modified asphalt (PMA) binders in SMA mixes, which were prepared using hydrated lime (HL) and liquid additives (LA) as anti-strip additive (ASA). The mixes were short-term aged at 185°C and the large molecular size (LMS) was obtained from gel-permeation chromatography (GPC) test. The high-temperature binder stiffness (G*/sin δ) was estimated from LMS and the estimated stiffness was used for aging level comparison. The objective of this study was to analyse age-retardation effect of HL and LA in PMA mixes which were prepared with HL and LA as ASA. The experimental study results showed that HL was effective on retarding oxidation of binders in PMA mixes and the normal mixes, which were used for comparison purpose. However, it was observed that LAs used in this study were not effective on retarding oxidation of binders in both mixes. Therefore, ASA was found to be one of the sources affecting stiffness level of binder in the mix.

Keywords
PMA
LMS,
G*/sin δ
Short-term aging
Hydrated lime
Liquid anti-strip additive
References
1
Ahn, K., Kim, Y. S., Yun, J. H., Han, J. H., Kim, S. and Kim, K. W. (2015). "Analysis of anti-oxidant effect on retardation of asphalt aging using GPC", Journal of Korean Asphalt Society, 5(1), pp. 12-17.
2
Han, J. Y., Kim, H., Kim, Y. S., Yun, J. H., Kim, S. and Kim, K. W. (2015). Aging characterization of sma and dense-graded asphalt mixture using gel-permeation chromatography, new frontiers in road and airport engineering, ASCE, pp. 143-151.
10.1061/9780784414255.014
3
Jennings, P. W. (1985). "Prediction of asphalt performance by HP-GPC", Proceedings of the Association of Asphalt Paving Technologists, 54, pp. 635-651.
4
Jeong, S., Xiao, F., Kim, Y. S. and Kim, K. W. (2017). "Evaluation of age retardation effect of antioxidant in Dense-Graded Asphalt (DGA) mixture using large molecular size", Construction and Building Materials, 149, pp. 459-466.
10.1016/j.conbuildmat.2017.05.094
5
Kim, K. W., Doh, Y. S. and Amirkhanian, S. N. (2004). "Evaluation of aging characteristics of selected PMA using HP-GPC," Korean Society of Road Engineers, 6(2), pp. 15-24.
6
Kim, S., Lee, S. H. Kwon, O., Han, J. Y. and Kim, K. W. (2016). "Estimation of service life reduction of asphalt pavement due to short-term aging measured by GPC from of asphalt mixture", Road Materials and Pavement Design, 17(1), pp. 153-167.
10.1080/14680629.2015.1066704
7
Kim, S., Shen, J., Lee, S. J., Kim, Y. S. and Kim, K. W. (2019). "Examination of physical property degradation due to severe short-term aging and effect of hydrated lime as antioxidant in asphalt mixture", Road Materials and Pavement Design, 20(7), pp. 1638-1692.
10.1080/14680629.2018.1473281
8
Korean Asphalt Society (2017). Aging data analysis for improving durability and quality of sma pavement, Final Report to Korea Expressway Corps.
9
Lee, S., Han, J., Kim, Y., Kim, S. and Kim, K. W. (2014). "Significance of short-term aging due to high asphalt mixture temperature", Journal of Advanced Mineral Aggregate Composites, 19(1), pp. 11-20.
10
The Ministry of Land, Infrastructure and Transport (2015). Production and construction guide for asphalt mixtures, Sejong, Republic of Korea.
Information
  • Publisher :KOREAN ASPHALT INSTITUTE
  • Publisher(Ko) :한국아스팔트학회
  • Journal Title :Journal of the Korean Asphalt Institute
  • Journal Title(Ko) :한국아스팔트학회지
  • Volume : 9
  • No :2
  • Pages :234-243
  • Received Date : 2019-12-16
  • Revised Date : 2019-12-25
  • Accepted Date : 2019-12-27
  • DOI :https://doi.org/10.22702/jkai.2019.9.2.015
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