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Jie Wang
Assistant Professor, Research Institute of Highway, Ministry of Transport, No. 8 Xitucheng Rd., Haidian District, Beijing 100088, China. ORCID:

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Journal article
Published: 01 January 2019 in Journal of Materials in Civil Engineering
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Increasing the percentage of reclaimed styrene-butadiene-styrene (SBS)–modified asphalt pavement (RAP-SBS) is a promising way to promote the development of sustainable roadway systems. The excellent properties of RAP-SBS are the key to its application in high percentages. This study evaluates the properties of hot mix asphalt (HMA) mixtures with 0%, 30%, 50%, and 70% RAP-SBS replacement in terms of rutting, low-temperature anticracking, and moisture susceptibility. The dynamic modulus test evaluates the stiffness. Both unaged and long-term aged (LOTA) samples are evaluated. Moreover, the effect of freeze-thaw (F-T) cycles on the splitting strength is also investigated. The results show that the RAP-SBS is feasible to recycle, and HMAs mixture with higher percentages of RAP-SBS exhibit better rutting resistance, and lower anti-cracking properties and moisture susceptibility. When the RAP-SBS percentage is less than 30%, the anticracking property of the recycled mixture is basically close to that of HMA mixture between −20 to −10°C, and the moisture susceptibility of the two types of mixture is similar when the percentage is less than 50%, but the durability of both recycled mixtures is poor. In addition, no continuous increase in dynamic modulus is demonstrated as the RAP-SBS percentage increases. When subjected to F-T cycles, the strength of mixtures with RAP-SBS is more sensitive than that of HMA mixtures, especially for mixtures with high RAP-SBS percentages.

ACS Style

Jie Wang; Wei Zeng; Yongchun Qin; Yange Zhang; Songchang Huang; Jian Xu. Properties of Mixtures with High Percentages of Reclaimed SBS–Modified Asphalt Pavement. Journal of Materials in Civil Engineering 2019, 31, 04018354 .

AMA Style

Jie Wang, Wei Zeng, Yongchun Qin, Yange Zhang, Songchang Huang, Jian Xu. Properties of Mixtures with High Percentages of Reclaimed SBS–Modified Asphalt Pavement. Journal of Materials in Civil Engineering. 2019; 31 (1):04018354.

Chicago/Turabian Style

Jie Wang; Wei Zeng; Yongchun Qin; Yange Zhang; Songchang Huang; Jian Xu. 2019. "Properties of Mixtures with High Percentages of Reclaimed SBS–Modified Asphalt Pavement." Journal of Materials in Civil Engineering 31, no. 1: 04018354.

Research article
Published: 27 August 2017 in Advances in Materials Science and Engineering
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To study the effect of aging SBS modified asphalt on the performance of asphalt pavement, aging at various times and temperatures was conducted with thin film oven, and then tests were made about the penetration, softening point, ductility, viscosity, toughness, and fluorescence microscopy of modified asphalt with different aging levels. The results show that, with the increasing of aging time, the penetration and ductility of modified asphalt decrease while its softening point and viscosity increase, and the variation trend of the toughness and tenacity is related to the aging temperature; the aging dynamic model with viscosity as parameter can well characterize the aging process of modified asphalt; at microlevel, with the decreasing of SBS particle size, the uniformity of particle size is better. Analysis of macroscopic properties, microscopic characteristics, and significance shows that the SBS particle area ratio has a significant correlation with tenacity as the aging temperature changes. When the aging temperature is 163°C, the SBS particle area ratio still has a significant correlation with tenacity as the aging time changes.

ACS Style

Jie Wang; Yongchun Qin; Songchang Huang; Jian Xu. Laboratory Evaluation of Aging Behaviour of SBS Modified Asphalt. Advances in Materials Science and Engineering 2017, 2017, 1 -12.

AMA Style

Jie Wang, Yongchun Qin, Songchang Huang, Jian Xu. Laboratory Evaluation of Aging Behaviour of SBS Modified Asphalt. Advances in Materials Science and Engineering. 2017; 2017 ():1-12.

Chicago/Turabian Style

Jie Wang; Yongchun Qin; Songchang Huang; Jian Xu. 2017. "Laboratory Evaluation of Aging Behaviour of SBS Modified Asphalt." Advances in Materials Science and Engineering 2017, no. : 1-12.

Journal article
Published: 21 July 2017 in Applied Sciences
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To evaluate the effect of rejuvenating agent on reclaimed SBS (styrene-butadiene-styrene) modified asphalt pavement (RSMAP) material, different tests of asphalt and mixtures were conducted. Firstly, the improvement effect of rejuvenating agents on the aged modified asphalt was tested at macroscopic and microscope level. Then the properties of hot mix asphalt (HMA) with different RSMAP contents (0%, 30%, 50% and 70%) were evaluated by conducting freeze-thaw split, semi-circular bending (SCB) and dynamic modulus (DM). The results indicate that rejuvenating agent can recycle the properties of aged modified asphalt effectively. The initial phase structure of the aged modified asphalt is not changed by adding rejuvenating agents. Moreover, the SBS particles area ratio of modified asphalt blends is significantly correlated with tenacity as the proportion of rejuvenating agent increases. For mixtures, RSMAP is harmful to moisture susceptibility and low-temperature cracking resistance of recycled mixture, especially with high RSMAP content. Moreover, the two properties can be improved by adding rejuvenating agents, but the recycled mixtures with high RSMAP content are not easy to recover to HMA mixture level. In general, the rejuvenating agent has an effect on the stiffness of the recycled mixture, but this is effect not obvious. When loading frequency reaches a higher value, the DM of recycled mixtures and HMA mixture tend to be consistent including high RSMAP content.

ACS Style

Jie Wang; Wei Zeng; Yongchun Qin; Songchang Huang; Jian Xu. Laboratory Evaluation of Rejuvenating Agent on Reclaimed SBS Modified Asphalt Pavement. Applied Sciences 2017, 7, 743 .

AMA Style

Jie Wang, Wei Zeng, Yongchun Qin, Songchang Huang, Jian Xu. Laboratory Evaluation of Rejuvenating Agent on Reclaimed SBS Modified Asphalt Pavement. Applied Sciences. 2017; 7 (7):743.

Chicago/Turabian Style

Jie Wang; Wei Zeng; Yongchun Qin; Songchang Huang; Jian Xu. 2017. "Laboratory Evaluation of Rejuvenating Agent on Reclaimed SBS Modified Asphalt Pavement." Applied Sciences 7, no. 7: 743.