Approach for Quantifying the Effect of Binder Oxidative Aging on the Viscoelastic Properties of Asphalt Mixtures

2013 ◽  
Vol 2373 (1) ◽  
pp. 109-120 ◽  
Author(s):  
Mohammad Zia Alavi ◽  
Elie Y. Hajj ◽  
Nathan E. Morian
Keyword(s):  
Viscoelastic Properties ◽  
Asphalt Mixtures ◽  
Oxidative Aging

Oxidative Aging of Asphalt Binders in Hot-Mix Asphalt Mixtures

2011 ◽  
Vol 2207 (1) ◽  
pp. 107-116 ◽  
Author(s):  
Nathan Morian ◽  
Elie Y. Hajj ◽  
Charles J. Glover ◽  
Peter E. Sebaaly
Keyword(s):  
Hot Mix Asphalt ◽  
Asphalt Mixtures ◽  
Asphalt Binders ◽  
Oxidative Aging

scholarly journals Study on Viscoelastic Properties of Asphalt Mixtures Incorporating SBS Polymer and Basalt Fiber under Freeze–Thaw Cycles

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1804
Author(s):  
Wensheng Wang ◽  
Guojin Tan ◽  
Chunyu Liang ◽  
Yong Wang ◽  
Yongchun Cheng
Keyword(s):  
Viscoelastic Properties ◽  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Asphalt Mixtures ◽  
Freeze Thaw ◽  
Static Creep ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Static Creep Test ◽  
Butadiene Styrene

This study aims to study the viscoelastic properties of asphalt mixtures incorporating styrene–butadiene–styrene (SBS) polymer and basalt fiber under freeze–thaw (F-T) cycles by using the static creep test. Asphalt mixture samples incorporating styrene–butadiene–styrene (SBS) polymer and basalt fiber were manufactured following the Superpave gyratory compaction (SGC) method and coring as well as sawing. After 0 to 21 F-T cycles processing, a uniaxial compression static creep test for the asphalt mixture specimens was performed to evaluate the influence of F-T cycles. The results indicated that the F-T cycles caused a larger creep deformation in the asphalt mixtures, which led to a decrease in the rut resistance of the asphalt mixtures incorporating SBS polymer and basalt fiber. Besides, the resistance to deformation decreased significantly in the early stage of F-T cycles. On the other hand, the viscoelastic parameters were analyzed to discuss the variation of viscoelastic characteristics. The relaxation time increased with F-T cycles, which will not be conducive to internal stress dissipation. Compared with lignin fiber, basalt fiber can improve the resistance to high-temperature deformation and the low-temperature crack resistance of asphalt mixtures under F-T cycles.

scholarly journals Influence Analysis and Optimization for Aggregate Morphological Characteristics on High- and Low-Temperature Viscoelasticity of Asphalt Mixtures

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2034 ◽  
Author(s):  
Yongchun Cheng ◽  
Wensheng Wang ◽  
Jinglin Tao ◽  
Meng Xu ◽  
Xiaoli Xu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Viscoelastic Properties ◽  
Viscoelastic Model ◽  
Asphalt Mixture ◽  
Morphological Characteristics ◽  
Relaxation Modulus ◽  
Mixture Design ◽  
Asphalt Mixtures ◽  
Raw Material ◽  
Viscoelastic Parameters

Aggregate is an indispensable raw material for asphalt pavement construction. This study evaluates the influences of aggregate morphological characteristics on the high- and low-temperature viscoelasticity of asphalt mixtures. Based on simplex lattice mixture design (SLD), asphalt mix samples were designed and prepared with the same gradation but three different types of aggregates. Subsequently, three morphological characteristics of aggregate (roundness, perimeter index, and erosion-dilation area ratio) are presented to characterize fine and coarse aggregates. Then based on Burgers viscoelastic model, uniaxial compression static creep test was carried out to analyze the high-temperature viscoelastic properties for asphalt mortar and mixture. Meanwhile fitting Prony series models have been utilized to represent relaxation modulus conversed from creep compliance and the low-temperature relaxation characteristics can be also discussed. The experimental results indicated that morphological characteristics of aggregate, especially fine aggregates, are strongly correlated with the viscoelastic parameters of asphalt mixtures. However, the complex morphological characteristics of aggregates have opposite influences on the high- and low-temperature viscoelastic parameters. Therefore, when considering both high- and low-temperature viscoelastic properties, the aggregate proportion was optimized for the appropriate morphological characteristics, which will provide a reference for asphalt mixture design.

Evolution of Thermoviscoelastic Properties of Asphalt Mixtures with Oxidative Aging

2014 ◽  
Vol 2447 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Nathan E. Morian ◽  
Mohammad Zia Alavi ◽  
Elie Y. Hajj ◽  
Peter E. Sebaaly
Keyword(s):  
Asphalt Mixtures ◽  
Oxidative Aging

Impact of Aging on the Viscoelastic Properties and Cracking Behavior of Asphalt Mixtures

2019 ◽  
Vol 2673 (6) ◽  
pp. 406-415 ◽  
Author(s):  
Runhua Zhang ◽  
Jo E. Sias ◽  
Eshan V. Dave ◽  
Reyhaneh Rahbar-Rastegar
Keyword(s):  
Viscoelastic Properties ◽  
Complex Modulus ◽  
Fatigue Cracking ◽  
Compact Tension ◽  
Asphalt Mixtures ◽  
Fatigue Properties ◽  
Cracking Behavior ◽  
Stiffness Reduction ◽  
Fracture Tests

Aging can significantly affect the viscoelastic properties and cracking behavior of asphalt mixtures, causing increase in stiffness, reduction in relaxation capability, and increase in brittleness. Eleven mixtures are evaluated using different laboratory conditioning protocols to evaluate how the properties of asphalt mixtures, including viscoelastic properties, fatigue, and fracture behavior will change over time. Comparisons between different aging levels and mixtures are conducted by using complex modulus (E*) (field cores are included), simplified viscoelastic continuum damage (S-VECD) approach, semi-circular bending (SCB), and disk shaped compact tension (DCT) fracture tests. The climatic aging index developed by the NCHRP 09-54 project is utilized in this study to calculate the appropriate field aging duration corresponding to the different laboratory aging protocols. Pavement evaluation tools FlexPAVETM and IlliTC are also used to predict and compare the fatigue and thermal cracking performance of these mixtures. The results of E* and S-VECD tests indicate that the mixtures are more prone to fatigue cracking with aging, and the two long-term conditioning protocols induce statistically similar changes in linear viscoelastic and fatigue properties. However, prediction of fatigue performance from FlexPAVE TM does not show a consistent trend once pavement structure and traffic are considered. Fracture tests and IlliTC predictions show the virgin mixtures and those with soft base binders will have better capability to resist cracking after long-term aging. In this study, the two mixtures with the largest difference between high and low temperature performance grade (PG) show the largest change in fracture and fatigue properties with aging.

Effect of select warm-mix additives on thermo-viscoelastic properties of asphalt mixtures

2013 ◽  
Vol 14 (sup1) ◽  
pp. 175-186 ◽  
Author(s):  
Elie Y. Hajj ◽  
Mohammad Zia Alavi ◽  
Nathan E. Morian ◽  
Peter E. Sebaaly
Keyword(s):  
Viscoelastic Properties ◽  
Asphalt Mixtures ◽  
Warm Mix Additives

Influence of Hydrogreen Bioasphalt on Viscoelastic Properties of Reclaimed Asphalt Mixtures

2013 ◽  
Vol 2371 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Elie Y. Hajj ◽  
Mena I. Souliman ◽  
Mohammad Zia Alavi ◽  
Luis Guillermo Loría Salazar
Keyword(s):  
Viscoelastic Properties ◽  
Asphalt Mixtures ◽  
Reclaimed Asphalt
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