Modelling of ultimate zone on asphalt binder applied sigmoid function approach

Sang Gab Cho; Tae Soon Park; Ki Hoon Moon

doi:10.22702/jkai.2023.13.2.19

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2024 Vol.13, Issue 2 Preview Page Next Page

Scientific Paper

Modelling of ultimate zone on asphalt binder applied sigmoid function approach 시그모이드함수 기반으로 아스팔트 바인더의 극한영역 모델링 연구

17 January 2024. pp. 250-261

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Abstract

This study was performed to predict the viscoelastic behavior on Asphalt binder by means of mathematic modeling approach. As testing material, PG 64-22 asphalt binder was prepared. The Dynamic Shear Rheometer (DSR) test was performed as mechanical experimental activities of asphalt binder. As result, complex shear modulus of given asphalt binder at various temperature and frequency conditions was computed then generated. To predict and analyze the global mechanical performance of tested asphalt binder from DSR test results, a master curve construction and generation approach was considered. In the previous studies, two mathematical models: Sigmoidal and Richards models, were considered to predict the global complex shear modulus pattern of given asphalt binders. However, not many studies considered on developing more advanced mathematical models on global complex shear modulus behavior than the previous ones in the past decades. In this paper, three different mathematical modeling approaches for complex shear modulus master curve construction were introduced. It was found that the newly developed three mathematical models can successfully explain and predict global complex shear modulus of asphalt binder compared to the previous ones. This means there can be more options for DSR test results prediction. More experimental works and corresponding analyses are needed to further strengthen the findings in this paper as a future research.

Keywords

Complex Shear Modulus

Master Curve

Mathematical Model

Sigmoidal and Richards Models

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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 :2
Pages :250-261
Received Date : 2023-12-10
Revised Date : 2023-12-20
Accepted Date : 2023-12-20
DOI :https://doi.org/10.22702/jkai.2023.13.2.19

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

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