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Rheological Behavior of Polyphosphoric Acid-Vulcanized Liquid Rubber Compound Modified Asphalt Binder

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Iranian Journal of Science and Technology, Transactions of Civil Engineering Aims and scope Submit manuscript

Abstract

The purpose of the study was to improve the anti-rutting property of liquid rubber (LR) asphalt binder. In this study, polyphosphoric acid-vulcanized liquid rubber (PPA-VLR) compound asphalt binder was prepared, and the effect of PPA concentration on binder’s physical and rheological behavior was investigated. The influence of PPA on anti-cracking performance of VLR asphalt was evaluated from various perspectives. Results proved that, with an increase in PPA content, the resistance to rutting of PPA-VLR compound modified asphalt was dramatically improved. Also, the added 1.6 wt% PPA led to the best anti-rutting enhancement and delayed the short- and long-term aging of the binder. Furthermore, the modification of PPA did not affect the PPA-VLR modified asphalt’s anti-cracking property significantly, which meant that PPA-VLR modified asphalt binder maintained an acceptable performance at low temperatures. The chemical fusion in PPA could increase the proportion of high-average molecular weight components. Overall, the incorporation of PPA would provide a basic reference, to extend the applying range of asphalt LR technology.

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Funding

The project was supported by National Key R&D Program of China (NO. 2018YFB1600200) and the Special Fund for Basic Scientific Research of Central Colleges, Chang’an University (NO. 300102318208 and 300102210527).

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CL and ZF were involved in methodology. CL performed investigation, formal analysis, writing—original draft. FM was involved in writing—revised draft & editing. ZF collected resources. JD was involved in writing—review. Yalu Wen was involved in writing—reviewing and editing. YW and JD were involved in supervision and visualization.

Corresponding author

Correspondence to Feng Ma.

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No potential conflict of interest was reported by the author(s).

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Li, C., Ma, F., Fu, Z. et al. Rheological Behavior of Polyphosphoric Acid-Vulcanized Liquid Rubber Compound Modified Asphalt Binder. Iran J Sci Technol Trans Civ Eng 46, 3931–3945 (2022). https://doi.org/10.1007/s40996-022-00831-y

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  • DOI: https://doi.org/10.1007/s40996-022-00831-y

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