Rheological evaluation of asphalt binder with various emulsifying agents for designing optimized Cement Asphalt Mortar (CAM)

Sang Gab Cho; Ki Hoon Moon; Falchetto Augusto Cannone; Il Hwan Kang; Tae Soon Park

doi:10.22702/jkai.2023.13.1.4

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2023 Vol.13, Issue 1 Preview Page Next Page

Scientific Paper

Rheological evaluation of asphalt binder with various emulsifying agents for designing optimized Cement Asphalt Mortar (CAM) 최적화된 시멘트 아스팔트 모르타르(CAM) 설계를 위한 다양한 유화제가 적용된 아스팔트 바인더의 유변학적 평가

11 July 2023. pp. 20-35

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Abstract

Designing an optimized Cement Asphalt Mortar (CAM) is essential not only for providing smoother riding quality on road pavements but also for reducing vibration and noise on railways. In producing CAM material, one of the most crucial factors is the selection of asphalt binders with good mixing compatibility when combined with various emulsifying agents. Many emulsifying agents and corresponding modified asphalt binders have been studied and developed over the past decades to improve the material performance of the asphalt mixture. However, the mechanical properties of blends of asphalt binder and emulsifying agents were not studied and considered significantly from a perspective of an application in railways. This demands a dedicated evaluation of these asphalt binder blends using various mathematical models in the attempt to design better-performing CAM. In this paper, a rheological evaluation of asphalt binder mixed with three emulsifying agents was performed with different mathematical models, including a newly developed formulation named C2MKP model. Dynamic Shear Rheometer (DSR) tests were conducted as experimental work. Complex modulus and phase angle results were computed; then, the corresponding master curve was generated based on different mathematical models. All the results were compared visually on a wide range of given test frequencies. It was found that modified asphalt binder can provide similar rheological performance compared to the conventional asphalt binder, suggesting that modified asphalt binder can be successfully adopted in the CAM production for railways.

Keywords

Cement asphalt mortar (CAM)

Emulsifying agent

Modified asphalt binder

Dynamic modulus

Phase angle

Dynamic shear rheometer (DSR)

Master curve

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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 : 13
No :1
Pages :20-35
Received Date : 2022-11-30
Revised Date : 2022-12-16
Accepted Date : 2022-12-17
DOI :https://doi.org/10.22702/jkai.2023.13.1.4

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

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