硬质铺面沥青混合料的路用性能评价

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Abstract In this study, a hard-grade paving asphalt with a penetration of 10/20 (0.1 mm) and a limestone aggregate were used to produce a hard-grade asphalt mixture AC-20 (HaGAM). Basic performance tests, such as a wheel rutting test at 60℃, a three-point beam bending test at -10℃, and an indirect tensile strength test during freezing-thawing cycles, were conducted to evaluate the conventional properties of HaGAM. The viscoelastic property of HaGAM was investigated by conducting a uniaxial compression test, through which the resilient moduli and complex moduli were determined under variable conditions. The master curve of the complex moduli of HaGAM was constructed using a sigmoid model. The road performance of HaGAM is comparable to that of a styrene-butadiene-styrene (SBS)-modified asphalt mixture based on conventional properties. However, HaGAM shows better performance than the SBS-modified mixture in terms of resilient and complex moduli. Therefore, hard-grade asphalt could be used to resist permanent deformation and ultimately improve the long-term performance of asphalt pavements.

Key words： road engineering pavement property viscoelastic analysis hard-grade paving asphalt master curve

Received: 12 January 2015

Fund:Supported by the International Cooperation Foundation of Ministry of Science and Technology (No.GJHZ2011-001); the Program of Cooperation Foundation of Ministry of Transportation (No.112010368); and the Science and Technology Foundation of Beijing Transportation Committee (No.KY200917)

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	DONG Yu-ming
	TAN Yi-qiu

Cite this article:

DONG Yu-ming,TAN Yi-qiu. Performance Evaluation of Hard-Grade Paving Asphalt Mixture[J]. Journal of Highway and Transportation Research and Development, 2015, 9(3): 7-14.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/ OR http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/Y2015/V9/I3/7

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