Journal Published Online: 01 November 2018
Volume 48, Issue 4

Multiple Stress Creep and Recovery Behavior of SBR-Modified Bitumen Emulsions

CODEN: JTEVAB

Abstract

The effect of two grades of styrene-butadiene rubber (SBR) at 2, 4, 6, and 8 wt. % on the deformation behavior of cationic polymer-modified bitumen emulsion by a multiple stress creep and recovery test at three different temperatures (58°C, 68°C, and 78°C) was investigated. It was observed that increasing SBR latex content leads to a decrease in nonrecoverable creep compliance (Jnr) of the bituminous residue, whereas increasing temperature leads to an increase in Jnr. The results also revealed that reduction in Jnr is not remarkable for polymer content higher than 6 wt. %. Furthermore, comparing the effect of different SBRs revealed that at equal polymer content, the Jnr of SBR-modified bitumen emulsion residue was found to be twice that of a branched carboxylated styrene-butadiene rubber (X-SBR)–modified one. At the same polymer modification rate and temperature, X-SBR can be used for higher traffic levels compared to an SBR-modified bitumen emulsion.

Author Information

Abedini, Mohammad
Department of Civil Engineering, Birjand Branch, Islamic Azad University, Birjand, Iran
Hassani, Abolfazl
Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran
Kaymanesh, Mahmoud Reza
Department of Civil Engineering, Payame Noor University, Tehran, Iran
Yousefi, Ali Akbar
Iran Polymer and Petrochemical Institute, Tehran, Iran
Abedini, Hossein
Iran Polymer and Petrochemical Institute, Tehran, Iran
Pages: 9
Price: $25.00
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Stock #: JTE20180031
ISSN: 0090-3973
DOI: 10.1520/JTE20180031