Rheological Characteristics of Polyphosphoric Acid–Modified Asphalt Mastic

Li, Jun; Yan, Kezhen; Liu, Jenny

doi:10.1061/(asce)mt.1943-5533.0002555

Cited by 24 publications

(12 citation statements)

References 23 publications

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“…Coatings 2023, 13, x FOR PEER REVIEW 5 of 15 appropriate filler content was verified to range from 60% to 120% in Superpave design [10]. In order to investigate the mastic behavior in a wide range of filler content, the limestone filler was mixed with the PG70 and PG76 asphalt binders at 0%, 50%, 80%, 100%, 120%, 150%, and 180% filler content to fabricate mastics in this study.…”

Section: Filler Content =mentioning

confidence: 99%

“…In addition, mineral fillers in the asphalt mastic can enhance its elastic response and decrease its susceptibility to permanent deformation [9]. Liu et al [10] estimated the high-temperature rheological properties of polyphosphoric acid (PPA)-modified asphalt mastic. The filler/asphalt (F/A) ratio by mass had a significant effect on the stiffness of the mastic, and the optimal F/A ratio was chosen to be 90% for PPA-modified asphalt mastic.…”

Section: Introductionmentioning

confidence: 99%

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Laboratory Evaluation of the Relationship of Asphalt Binder and Asphalt Mastic via a Modified MSCR Test

et al. 2023

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Asphalt mastic, which consists of an asphalt binder and a mineral filler, provides critical adhesion and viscoelasticity to an asphalt mixture. The rheological response of the asphalt mastic is mainly derived from its asphalt binder. In this study, a simple laboratory test method is proposed to estimate the relationship of asphalt binder and its mastic. Two modified binders (3.5% and 4.0% styrene–butadiene–styrene (SBS) of asphalt binder by mass) were blended with a limestone filler at six different mineral filler contents to produce mastic samples. A modified multiple stress creep-recovery (MSCR) test was conducted on both the asphalt binder and its mastic with the same testing protocols, and the stress conditions and rheological response of asphalt binder in the mastic with linear or nonlinear viscoelasticity were both investigated. The results show that the stress of the asphalt binder in its mastic decreased with increasing filler contents. However, for the linear-viscoelasticity mastic, the decrease rate of the stress began to slow down when the filler content had reached 100% or 120%. For the rheological properties of the asphalt binder in the mastic, the %R of the asphalt binder was improved by adding filler, especially for the nonlinear-viscoelasticity mastic. The asphalt binder of the linear-viscoelasticity asphalt mastic also showed a linear viscoelastic response and a good recovery property. The performance of the asphalt mastic and rheological properties of its asphalt binder were highly related to its filler content.

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Section: Filler Content =mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laboratory Evaluation of the Relationship of Asphalt Binder and Asphalt Mastic via a Modified MSCR Test

et al. 2023

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“…Based on this testing, given the low values of creep stiffness and high m -values, ECP specimens are more flexible and, therefore, exhibit a good resistance to low-temperature cracking. In this study, the authors followed the recommendations from previous studies when analyzing the creep stiffness and m -values of the different ECP combinations ( 28 , 29 ). In accordance with the American Association of State Highway and Transportation Officials (AASHTO) M 320 standard, two performance thresholds were set for both the creep stiffness and m -value.…”

Section: Resultsmentioning

confidence: 99%

Assessment of the Rheological and Mechanical Properties of Emulsion–Cement Paste

Saidi

Purdy

Mehta

et al. 2023

Transportation Research Record: Journal of the Transportation R

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The main objective of this study was to evaluate the rheological and mechanical properties of emulsion–cement paste (ECP), which is generally formed during the mixing process of cold recycled mixtures. Forty-five combinations of ECP specimens were prepared at varying amounts of emulsion, cement, and water. Specimens were mixed using a low-shear mixer, then allowed to cure in an oven at 60°C for 72 h. The testing program for ECPs included multiple stress creep recovery, bending beam rheometer, linear amplitude sweep, penetration, and isothermal calorimetry tests. Statistical analyses were then conducted to assess the significance of the impact of ECP constituents on the low-, intermediate-, and high-temperature properties. Results showed that varying the proportions of emulsion, cement, and water significantly influenced the properties of ECPs. Higher cement and water contents improved the properties of ECP at high temperatures, but reduced their resistance to intermediate- and low-temperature cracking. Conversely, increasing the emulsion content improved the resistance of ECPs to fatigue and low-temperature cracking, while increasing their rutting susceptibility at high temperatures. The outcomes of this study provide more knowledge about the interactions among emulsion, cement, and water, which can be beneficial to the designers of asphalt mixtures that involve the use of emulsion, cement, and water, such as cold recycled mixtures.

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“…However, excessive use of mineral powder can cause agglomeration within the asphalt mastic, which reduces the low-temperature bond strength [ 25 ]. Liu’s research found that the asphalt-to-filler mass ratio significantly affects the stiffness of asphalt mastic at different temperatures but has little effect on the low-temperature creep rate [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of GFRP Powder on the High and Low-Temperature Properties of Asphalt Mastic

et al. 2023

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Glass fiber reinforced polymer (GFRP) is the main composite material used in wind turbine blades. In recent years, zero-carbon energy sources such as wind power have been widely used to reduce carbon emissions, resulting in a large amount of waste GFRP, and causing serious environmental problems. To explore efficient ways to recycle waste GFRP, this study explores the impact of adding GFRP powder (nominal maximum particle size ≤ 0.075 mm) on the high and low temperature properties of asphalt mastic. Samples of GFRP asphalt mastics were prepared with filler-asphalt mass ratios of 0.01:1, 0.1:1, 0.8:1, and 1:1, as well as two control samples of limestone filler asphalt mastics with filler-asphalt mass ratios of 0.8:1 and 1:1. The study analyzed the effect of GFRP on the asphalt mastic’s performance using temperature sweep, MSCR, and BBR tests. Results showed that the presence of GFRP improved the high-temperature resistance and recovery of asphalt mastic but led to decreased low-temperature crack resistance. The results suggest that GFRP has the potential to be used as a filler in asphalt mastic, with a recommended filler-asphalt mass ratio range of less than 0.8:1 for optimal low-temperature performance. However, further research is necessary to determine the optimal content of GFRP in asphalt mastic and to study its impact on other road performance metrics.

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Rheological Characteristics of Polyphosphoric Acid–Modified Asphalt Mastic

Cited by 24 publications

References 23 publications

Laboratory Evaluation of the Relationship of Asphalt Binder and Asphalt Mastic via a Modified MSCR Test

Laboratory Evaluation of the Relationship of Asphalt Binder and Asphalt Mastic via a Modified MSCR Test

Assessment of the Rheological and Mechanical Properties of Emulsion–Cement Paste

The Effect of GFRP Powder on the High and Low-Temperature Properties of Asphalt Mastic

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