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Open AccessArticle

Pavement Performance Investigation of Nano-TiO2/CaCO3 and Basalt Fiber Composite Modified Asphalt Mixture under Freeze‒Thaw Cycles

College of Transportation, Jilin University, Changchun 130022, China
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Appl. Sci. 2018, 8(12), 2581; https://doi.org/10.3390/app8122581
Received: 12 November 2018 / Revised: 5 December 2018 / Accepted: 7 December 2018 / Published: 12 December 2018
(This article belongs to the Special Issue Asphalt Materials)
The objective of this research is to evaluate the pavement performance degradation of nano-TiO2/CaCO3 and basalt fiber composite modified asphalt mixtures under freeze‒thaw cycles. The freeze‒thaw resistance of composite modified asphalt mixture was studied by measuring the mesoscopic void volume, stability, indirect tensile stiffness modulus, splitting strength, uniaxial compression static, and dynamic creep rate. The equal-pitch gray prediction model GM (1, 3) was also established to predict the pavement performance of the asphalt mixture. It was concluded that the high- and low-temperature performance and water stability of nano-TiO2/CaCO3 and basalt fiber composite modified asphalt mixture were better than those of an ordinary asphalt mixture before and after freeze‒thaw cycles. The test results of uniaxial compressive static and dynamic creep after freeze‒thaw cycles showed that the high-temperature stability of the nano-TiO2/CaCO3 and basalt fiber composite modified asphalt mixture after freeze‒thaw was obviously improved compared with an ordinary asphalt mixture. View Full-Text
Keywords: nanometer materials; basalt fiber; composite modified asphalt mixture; freeze‒thaw cycle; damage model nanometer materials; basalt fiber; composite modified asphalt mixture; freeze‒thaw cycle; damage model
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Gong, Y.; Bi, H.; Tian, Z.; Tan, G. Pavement Performance Investigation of Nano-TiO2/CaCO3 and Basalt Fiber Composite Modified Asphalt Mixture under Freeze‒Thaw Cycles. Appl. Sci. 2018, 8, 2581.

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