Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix Additives

Bei Chen; Xin Yu; Fuqiang Dong; Wenxiu Wu; Yuanzhe Zu; Shisong Ren

doi:10.1061/JMCEE7.MTENG-14839

Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix Additives

Bei Chen, Xin Yu, Fuqiang Dong^*, Wenxiu Wu, Yuanzhe Zu, Shisong Ren

^*Corresponding author for this work

Pavement Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

54 Downloads (Pure)

Abstract

High-viscosity modified asphalt (HVMA) is the most commonly applied method in drainage asphalt pavements. However, some disadvantages of hot-mix HVMA, including high energy consumption and unavoidable environmental pollution, should be improved. Therefore, warm-mix additive (WMA) was introduced. In this paper, the effects of WMA on the rheological and microstructural properties of HVMA were studied to select optimum WMA conditions. WMAs mainly include foam warm mix (1%, 3%, and 5%), Sasobit (1%, 3%, and 5%), Evotherm (0.4%, 0.8%, and 1.2%), and the newly introduced warm additive glow brand (GLWBR) (0.4%, 0.8%, and 1.2%). Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests were performed on HVMA after rheological processes. Also, microstructural properties were examined by Fourier transform infrared spectroscopy and scanning electron microscopy methods. Based on the obtained results, all WMAs reduced the viscosity (135°C) of HVMA and achieved warm mixing effects. However, absolute viscosity (60°C) was enhanced by Sasobit and GLWBR. In addition, GLWBR improved high-temperature rheological performance and had no significant effect on the low-temperature and aging performance of HVMA. These findings were further verified by morphological observations.

Original language	English
Article number	04023099
Number of pages	14
Journal	Journal of Materials in Civil Engineering
Volume	35
Issue number	5
DOIs	https://doi.org/10.1061/JMCEE7.MTENG-14839
Publication status	Published - 2023

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Funding

The work described in this paper is supported by the National Key R&D Program of China (Grant No. 2021YFB2601200), the Fundamental Research Funds for the Central Universities (B210202040), and the National Natural Science Foundation of China (51708177).

Keywords

Aging performance
High-viscosity modified asphalt (HVMA)
Morphological observation
Physical properties
Rheological properties

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1061/JMCEE7.MTENG-14839

Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix AdditivesFinal published version, 5.8 MB

Cite this

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title = "Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix Additives",

abstract = "High-viscosity modified asphalt (HVMA) is the most commonly applied method in drainage asphalt pavements. However, some disadvantages of hot-mix HVMA, including high energy consumption and unavoidable environmental pollution, should be improved. Therefore, warm-mix additive (WMA) was introduced. In this paper, the effects of WMA on the rheological and microstructural properties of HVMA were studied to select optimum WMA conditions. WMAs mainly include foam warm mix (1%, 3%, and 5%), Sasobit (1%, 3%, and 5%), Evotherm (0.4%, 0.8%, and 1.2%), and the newly introduced warm additive glow brand (GLWBR) (0.4%, 0.8%, and 1.2%). Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests were performed on HVMA after rheological processes. Also, microstructural properties were examined by Fourier transform infrared spectroscopy and scanning electron microscopy methods. Based on the obtained results, all WMAs reduced the viscosity (135°C) of HVMA and achieved warm mixing effects. However, absolute viscosity (60°C) was enhanced by Sasobit and GLWBR. In addition, GLWBR improved high-temperature rheological performance and had no significant effect on the low-temperature and aging performance of HVMA. These findings were further verified by morphological observations.",

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AU - Dong, Fuqiang

AU - Wu, Wenxiu

AU - Zu, Yuanzhe

AU - Ren, Shisong

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2023

Y1 - 2023

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Rheological Properties of High-Viscosity Modified Asphalt Containing Warm-Mix Additives

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

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