Prediction of Asphalt Rheological Properties Using HP-GPC

Wahhab, Hamad I. Al‐Abdul; Ibrahim, Azmi; Ali, Firyal Mohammed; Al-Dubabi, I. A.

doi:10.1061/(asce)0899-1561(1999)11:1(6)

Cited by 64 publications

(12 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The GPC analysis also revealed some other unexpected results. Typically, the LMS content of an asphalt binder MSD has a direct correlation with the viscosity and G * / sin δ [20,21]. For this testing, however, such trends do not consistently exist.…”

Section: Phasementioning

confidence: 99%

Effects of Fiber Finish on the Performance of Asphalt Binders and Mastics

Putman

2011

Advances in Civil Engineering

View full text Add to dashboard Cite

The objective of this study was to determine the effects of finishes applied to polyester fibers on the properties of asphalt binders and mastics. Asphalt binders were mixed with finishes that were extracted from the fibers, and mastics were also made with binder and fibers (with and without finish) to isolate the effects of the finish. The results indicated that crude source plays a significant role in how the fiber finish affects the binders and mastics. Additionally different finishes had different effects on binder properties. The major finding of this study is that different polyester fibers, even from the same manufacturer, may not necessarily perform the same in an asphalt mixture. It is important to use fibers that are compatible with the particular asphalt binder that is being used because of the significance of the binder source on the interaction between the finish and the binder.

show abstract

Section: Phasementioning

confidence: 99%

Effects of Fiber Finish on the Performance of Asphalt Binders and Mastics

Putman

2011

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…The resultant chromatogram is typically divided into three portions [19]: large molecular size (LMS), medium molecular size (MMS), and small molecular size (SMS). Asphalt binders with identical molecular weight/size distributions are anticipated to exhibit similar rheological behaviors [20]. In this study, the GPC test was conducted in a Waters GPC system equipped with Waters 2410 differential refractive index detector.…”

Section: Gpc Testmentioning

confidence: 99%

Investigation on self-healing of neat and polymer modified asphalt binders

Wang

Xue

Xie

et al. 2020

Archiv.Civ.Mech.Eng

View full text Add to dashboard Cite

The paving asphalts have long been recognized to be capable of self-healing. The objective of this study was to evaluate the healing potential of asphalt binders and investigate its relationship with molecular characteristics in terms of composition and structures. Five neat and styrene-butadiene-styrene (SBS) modified asphalt binders were characterized using the recently developed linear amplitude sweep-based healing test. The data were analyzed based on the viscoelastic continuum damage theory to establish healing master curves and determine the healing rate H R. Chemical evaluation methods included saturates, aromatics, resins, and asphaltenes fractionation, gel permeation chromatography, and nuclear magnetic resonance spectroscopy. Results indicated that the presence of more light/low-polarity fractions of saturates and aromatics or higher concentrations of small molecules promoted healing, as these molecules were expected to have higher mobility facilitating molecular diffusion across crack interfaces. Lower percentages of aromatic ring structures and more aliphatic chains corresponded to higher healing rates. The SBS-modified asphalt binders contained higher concentrations of aromatic rings, but still provided comparable healing potential with the neat asphalts.

show abstract

“…The LMS were only plotted and utilized to characterize the modified binder fractions' change in properties. Research has shown that the LMS components of binder had better correlations with asphalt binder properties than other components [20][21][22]. Figure 1 shows the temperature sweep viscoelastic properties for rheological properties (a) * and (b) for the samples interacting at 160 ∘ C, 30 Hz after 120 minutes with 3% UMO, 10% CRM, or both modifiers after 120 minutes of interaction time, respectively.…”

Section: Gel Permeation Chromatography (Gpc)mentioning

confidence: 99%

Investigation of the Physical and Molecular Properties of Asphalt Binders Processed with Used Motor Oils

Ragab

Abdelrahman

2015

Journal of Materials

View full text Add to dashboard Cite

In this work we investigated the performance aspects of addition of used motor oils (UMO) to neat and crumb rubber modified asphalts (CRMA) and related that to the change of molecular size distribution of modified asphalt's fractions; asphaltenes, saturates, naphthene aromatics, and polar aromatics. Based on the results of temperature sweep viscoelastic tests, addition of crumb rubber modifier (CRM) alone or with UMO results in the formation of internal network within the modified asphalt. Based on the results of short and long term aged asphalts, the utilization of combination of UMO and CRM enhanced the aging behavior of asphalt. Bending beam rheometer was utilized to investigate the low temperature behavior of UMO modified asphalts. Based on those tests, the utilization of the UMO and CRM enhanced the low temperature properties of asphalts. Based on the results of the asphalt separation tests and the Gel Permeation Chromatography (GPC) analysis, it was found that saturates and naphthene aromatics are the two asphalt fractions that have similar molecular size fractions as those of UMO. However, UMO only shifts the molecular sizes of saturates after interaction with asphalt. Results also show that polar aromatics pose higher molecular size structures than UMO.

show abstract

Prediction of Asphalt Rheological Properties Using HP-GPC

Cited by 64 publications

References 4 publications

Effects of Fiber Finish on the Performance of Asphalt Binders and Mastics

Effects of Fiber Finish on the Performance of Asphalt Binders and Mastics

Investigation on self-healing of neat and polymer modified asphalt binders

Investigation of the Physical and Molecular Properties of Asphalt Binders Processed with Used Motor Oils

Contact Info

Product

Resources

About