Structural evolution of recycled tire rubber in asphalt

Yao, Hongru; Zhou, Shuai; Wang, Shifeng

doi:10.1002/app.42954

Structural evolution of recycled tire rubber in asphalt

Journal Article · Mon Oct 19 04:00:00 EDT 2015 · Journal of Applied Polymer Science

DOI:https://doi.org/10.1002/app.42954· OSTI ID:1400726

Yao, Hongru ^[1]; Zhou, Shuai ^[1]; Wang, Shifeng ^[1]

School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China

ABSTRACT

The performance of recycled‐tire‐rubber‐modified asphalt mainly depends on the structure of rubber in the asphalt. The effects of the curing temperature, mixing time, and shearing on the evolution of the chemical structure and morphological structure of crumb rubber in asphalt were investigated. The crosslink density, compositions, and morphological evolution of the residual crumb rubber were characterized. The results show that the structure evolution of tire rubber in asphalt was greatly affected by the curing temperature. At a low curing temperature (180°C), the crosslinking network of the tire rubber was broken down, and this led to the partial dissolution of natural rubber (NR). However, at high curing temperature (240°C), the dissolution of NR, synthetic rubber, carbon black, and inorganic filler was observed. The released carbon black covered with a thin layer of bound rubber dispersed at a microstructured or nanostructured size in the asphalt. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 42954.

View Accepted Manuscript (Publisher)

Sponsoring Organization:: USDOE

OSTI ID:: 1400726

Journal Information:: Journal of Applied Polymer Science, Journal Name: Journal of Applied Polymer Science Journal Issue: 6 Vol. 133; ISSN 0021-8995

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: United States

Language:: English

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