Effect of physical hardening on asphalt material: From binder to mixture

Ki Hoon Moon

doi:10.22702/jkai.2025.15.2.27

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2025 Vol.15, Issue 2 Preview Page Next Page

Scientific Paper

Effect of physical hardening on asphalt material: From binder to mixture

31 December 2025. pp. 310-317

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Abstract

The significant effect of physical hardening on asphalt binder properties at low temperature is well documented. However, not many studies addressing physical hardening in asphalt mixtures crucially. This paper investigates physical hardening effect on asphalt mixtures creep behavior especially at low temperatures. Bending Beam Rheometer (BBR) creep tests were performed on asphalt binder and asphalt mixture beams conditioned at the test temperature for 1h and 24h to quantify physical hardening effects. Both laboratory-prepared and field samples were used. For all tested asphalt binders, the additional conditioning time resulted in significant increase in creep stiffness and in significant reduction in m-values. For asphalt mixtures, much less significant changes are observed, and the type of aggregate appears to be a significant factor.

Keywords

Physical hardening effect

Low temperature

Bending Beam Rheometer (BBR) test

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Information

Publisher :KOREAN ASPHALT INSTITUTE
Publisher(Ko) :한국아스팔트학회
Journal Title :Journal of the Korean Asphalt Institute
Journal Title(Ko) :한국아스팔트학회지
Volume : 15
No :2
Pages :310-317
Received Date : 2025-12-19
Revised Date : 2025-12-26
Accepted Date : 2025-12-26
DOI :https://doi.org/10.22702/jkai.2025.15.2.27

Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

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