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  • Open Access


    Laboratory Study on CR/SBS Modified Asphalt: Preparation and Performance Characterization

    Liang Song1,2,3, Guoqiang Zhang2, Hongfei Xie2, Jie Gao4,*

    Journal of Renewable Materials, Vol.10, No.6, pp. 1659-1674, 2022, DOI:10.32604/jrm.2022.018335

    Abstract Crumble rubber (CR) can be used to prepare CR and styrene-butadiene-styrene (SBS) composite modified asphalt with a good high-and low-temperature performance, meanwhile the addition of CR could work as the substitute for SBS and help reduce the content of SBS. This study contains three main parts: effect of preparation and effect of material composition as well as rheological performance characterization. Factors during the preparation, including shearing temperature, shearing time, mixing time and swelling time, were selected, while base binder, CR content, CR particle size and SBS content in material composition were considered. The effects of these factors were assessed in… More >

  • Open Access


    The Effect of Bio-Oil on High-Temperature Performance of Bio-Oil Recycled Asphalt Binders

    Hengcong Zhang*, Jianmin Wu, Zhong Qin, Yin Luo

    Journal of Renewable Materials, Vol.10, No.4, pp. 1025-1037, 2022, DOI:10.32604/jrm.2022.017483

    Abstract Bio-oil recycled asphalt binders in road engineering can help solve the problem of oil shortage and reduce the environmental pollution and sustainability. This paper investigated the road performance of the aged asphalt binder by adding bio-oil so that the aged asphalt binder could be reused to reach purpose of reuse. The residual soybean oil was selected as rejuvenator and blended with aged asphalt binder at 0%, 2%, 4%, and 6%, respectively. The results showed that bio-oil increased the penetration of aged asphalt binder, the penetration of bio-oil recycled asphalt binder with a bio-oil content of 6% reached the standard of… More >

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