期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：233
期号：3
页码：032011
DOI：10.1088/1755-1315/233/3/032011
出版社：IOP Publishing
摘要：Gussasphalt concrete has many excellent characteristics, such as good impermeability, strength, elasticity and so on. In recent years, it has been widely used in large and medium bridges, especially in steel deck pavement. But different from ordinary mixture, gussasphalt needs to undergo long period of high temperature aging during mixing and transportation. In order to reveal the microscopic mechanism of superheat aging of gussasphalt, fourier transform infra-red spectroscopy (FTIR) is mainly used in this paper. The changes of functional groups of gussasphalt before and after aging were analyzed from the microscopic point of view. The results show that there is no new absorption peak of lake asphalt when it is added to the matrix asphalt, the asphalt is mainly physically modified by lake asphalt, and the aging degree of gussasphalt can be quantitatively characterized by carbonyl coefficient.
