The Correlation between Density and Low-Temperature Creep Property of Asphalt

作     者：Zhang Xiaoying Xu Chuanjie 

作者机构：State Key Laboratory of Heavy OilChina University of PetroleumDongying 257061 Shtar Science&Technology GroupChina University of PetroleumDongying 257061 

出 版 物：《China Petroleum Processing & Petrochemical Technology》 (中国炼油与石油化工（英文版）)

年 卷 期：2012年第14卷第2期

页      面：31-38页

核心收录：

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0822[工学-轻工技术与工程] 0702[理学-物理学] 

主　　题：asphalt density creep stiffness low-temperature property 

摘      要：The density of asphalt was measured with the pycnometer and densitometer. Creep properties of the asphalt were investigated with the bending beam rheometer at temperatures ranging from 0 ~C to -36 ~C. The asphalt density data used to correlate with the creep properties were calculated from the regression equation of density and temperature. The asphalt sample used to determine the creep property was aged by the standard RTFOT test and the PAV test. The test results showed that the asphalt density had a linear relationship with temperature changes. The logarithm of the creep stiffness and the slope of the logarithm of the stiffness at 60 seconds all demonstrated a linear relationship with the density, and the regression coefficient of these data was around 0.99. The creep stiffness and the slope of the creep stiffness can be calculated from the asphalt density at the same temperature.