Rheological Properties of Asphalt Mortar with High Viscosity

Ming, Xing; Chen, H. X.; Li, Z. Z.; Y., X.; Sun, Yiren; Liang, Zhaohui

doi:10.1088/1757-899x/359/1/012048

Cited by 3 publications

(3 citation statements)

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“…PG classification mainly distinguishes the high- and low-temperature grades and fatigue performance of asphalt materials. Shenoy [ 34 ] corrected the rutting factor of asphalt and obtained G*/(1 − 1/(1/tanδsinδ)) as a new indicator of the high-temperature performance of asphalt. Xing investigated the dynamic shear rheological properties of different types of high-viscosity asphalt slurries, and the results showed that increasing the viscosity of modified asphalt or increasing the specific surface area of mineral powder can effectively reduce the temperature sensitivity of high-viscosity asphalt slurries to rutting factors and improve their high-temperature deformation resistance [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

“…Shenoy [ 34 ] corrected the rutting factor of asphalt and obtained G*/(1 − 1/(1/tanδsinδ)) as a new indicator of the high-temperature performance of asphalt. Xing investigated the dynamic shear rheological properties of different types of high-viscosity asphalt slurries, and the results showed that increasing the viscosity of modified asphalt or increasing the specific surface area of mineral powder can effectively reduce the temperature sensitivity of high-viscosity asphalt slurries to rutting factors and improve their high-temperature deformation resistance [ 34 ]. Overall, the research methods and evaluation indicators for asphalt rheological properties have mostly been continuously improved and developed based on PG, so rheological methods are more closely related to road performance than empirical testing.…”

Section: Introductionmentioning

confidence: 99%

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Research on Low-Cost High-Viscosity Asphalt and Its Performance for Porous Asphalt Pavement

Xia,

Su,

Shan

et al. 2024

Polymers

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To develop a cost-effective, high-viscosity asphalt for porous asphalt pavement, we utilized SBS, tackifier, and solubilizer as the main raw materials, identified the optimal composition through an orthogonal experiment of three factors and three levels, and prepared a low-cost high-viscosity asphalt. We compared its conventional and rheological properties against those of rubber asphalt, SBS modified asphalt, and matrix asphalt, employing fluorescence microscopy and Fourier transform infrared spectroscopy for microstructural analysis. The results indicate that the optimal formula composition for high-viscosity asphalt was 4–5% styrene-butadiene-styrene (SBS) + 1–2% tackifier +0–3% solubilizer +0.15% stabilizer. The components evenly dispersed and the performances were enhanced with chemical and physical modification. Compared with SBS modified asphalt, rubber asphalt, and matrix asphalt, the softening point, 5 °C ductility, and 60 °C dynamic viscosity of high-viscosity asphalt were significantly improved, while the 175 °C Brookfield viscosity was equivalent to SBS modified asphalt. In particular, the 60 °C dynamic viscosity reaches 383,180 Pa·s. Rheological tests indicate that the high- and low-temperature grade of high-viscosity asphalt reaches 88–18 °C, and that high-viscosity asphalt has the best high-temperature resistance to permanent deformation and low-temperature resistance to cracking. It can save about 30% cost compared to commercially available high-viscosity asphalt, which is conducive to the promotion and application of porous asphalt pavement.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Low-Cost High-Viscosity Asphalt and Its Performance for Porous Asphalt Pavement

Xia,

Su,

Shan

et al. 2024

Polymers

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“…High-viscosity asphalt binder is needed to ensure the performance of the mixture. High-viscosity asphalt binder, as an important part of porous asphalt pavement, plays a significant role in asphalt mixtures, the properties of which determine the performance of porous asphalt pavement [ 3 , 4 ]. In hygrothermal environments, asphalt binder viscosity decreases and fluidity increases, and the deformation resistance of porous asphalt pavement and the adhesion between asphalt binder and aggregate can be easily decreased [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Properties of High-Viscosity Modified Asphalt Binder under Hygrothermal Environments

Xing,

Li,

Zhou

et al. 2024

Materials

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High-viscosity modified asphalt binder (HVMA) is used widely as a polymer-modified binder in porous asphalt pavement because it can improve the cohesiveness of the asphalt mixture. However, because of the high voidage in the mixture, HVMA is vulnerable to aging induced by temperature, oxygen, water, sunlight, and other climatic conditions, which degrades the performance of pavement. The properties of asphalt binder are affected adversely by the effects of hygrothermal environments in megathermal and rainy areas. Therefore, it is essential to study the aging characteristics of HVMA under the influence of hygrothermal environments to promote its application as a high-viscosity modifier. A hygrothermal cycle aging test (HCAT) was designed to simulate the aging of HVMA when rainwater was kept inside of the pavement after rainfall in megathermal areas. One kind of base bitumen and three kinds of HVMA (referred to as SBS, A, and B, respectively) were selected in this study. Short-term aging tests, hygrothermal cycling aging tests, and long-term aging tests were performed on the base bitumen and three kinds of modified asphalt binder. Fourier-transform infrared spectroscopy (FTIR), thermo-gravimetric analysis (TGA), and dynamic shear rheological (DSR) tests were used to evaluate the properties of the binders on the micro and macro scales. By comparing the index variations of the four binders before and after aging, the effects of the hygrothermal environment on the properties of HVMA were studied. It was found that the effects of the hygrothermal environment expedited the decomposition of the polymer and the formation of carbonyl groups compared with the TFOT and PAV test, which TGA confirmed further. Moreover, the thermal stability of the samples was improved after HCAT. In addition, the master curves of the complex modulus showed that hygrothermal cycles made the high-temperature rutting resistance of asphalt binder increase significantly. All of the results above verified that the effect of hygrothermal cycling could accelerate the aging of HVMA and shorten its service life.

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Research on high-temperature rheological performance of fiber reinforced high-viscosity asphalt mastics

Chen

et al. 2023

Construction and Building Materials

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Rheological Properties of Asphalt Mortar with High Viscosity

Cited by 3 publications

References 0 publications

Research on Low-Cost High-Viscosity Asphalt and Its Performance for Porous Asphalt Pavement

Research on Low-Cost High-Viscosity Asphalt and Its Performance for Porous Asphalt Pavement

Investigation of the Properties of High-Viscosity Modified Asphalt Binder under Hygrothermal Environments

Research on high-temperature rheological performance of fiber reinforced high-viscosity asphalt mastics

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