Master Curve Establishment and Complex Modulus Evaluation of SBS-Modified Asphalt Mixture Reinforced with Basalt Fiber Based on Generalized Sigmoidal Model.

Guojin Tan,Zhiqing Zhu,Wensheng Wang,Yong Wang,Yongchun Cheng

doi:10.3390/polym12071586

Guojin Tan, Zhiqing Zhu + Show 3 more

Open Access

https://doi.org/10.3390/polym12071586

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Journal: Polymers	Publication Date: Jul 17, 2020
Citations: 25	License type: CC BY 4.0

Affiliation: Jilin University, Jilin Meteorological Bureau

Abstract

Basalt fiber has been proved to be a good modified material for asphalt mixture. The performance of basalt fiber modified asphalt mixture has been widely investigated by extensive researches. However, most studies focused on ordinary static load tests, and less attention was paid to the dynamic mechanical response of asphalt mixture incorporating with basalt fiber. This paper aims to establish the master curve of complex modulus of asphalt mixture incorporating of styrene-butadiene-styrene (SBS) polymer and basalt fiber using the generalized Sigmoidal model. Both loading frequency and temperature were investigated for dynamic mechanical response of asphalt mixture with basalt fiber. In addition, based on the time-temperature superposition principle, the master curves of complex modulus were constructed to reflect the dynamic mechanical response at an extended reduced frequency range at an arbitrary temperature. Results indicated that the generalized Sigmoidal model in this paper could better reflect the dynamic mechanical response accurately with correlation coefficients above 0.97, which is utilized to predict the dynamic mechanical performances accurately. Simultaneously, the modulus values exhibit an increasing trend with loading frequency and decrease versus temperature. However, the phase angle values showed different trends with frequency and temperature.

Highlights

With the rapid increase of traffic, ordinary asphalt pavements often fail to meet the performance requirements, resulting in a few destructions including low and medium-temperature cracking, high-temperature rutting and freeze-thaw (F-T) destruction, and so on [1,2,3,4]
Determination of Dynamic Modulus of Asphalt Mixture Reinforced with Basalt Fiber
The dynamic deformation response would change with loading frequency, deformation during the unloading process

Summary

Introduction

With the rapid increase of traffic, ordinary asphalt pavements often fail to meet the performance requirements, resulting in a few destructions including low and medium-temperature cracking, high-temperature rutting and freeze-thaw (F-T) destruction, and so on [1,2,3,4]. Various additives such as rubbers, polymers, fibers and other additive materials have been adopted to incorporate with asphalt [5,6,7,8]. Studies demonstrated that polymers including styrene-butadiene-styrene (SBS), styrene-butadiene rubber (SBR), etc. Adding fibers to asphalt mixtures usually increases the mechanical performances, such as cracking resistance [10] To improve the compressive capabilities of asphalt materials effectively, researchers have made lots of efforts and tried many novel additives.

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