期刊
ROAD MATERIALS AND PAVEMENT DESIGN
卷 22, 期 5, 页码 1044-1059出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14680629.2019.1661275
关键词
bitumen; ageing; FTIR spectroscopy; rheology; chemo-mechanics
资金
- Dutch Ministry of infrastructure and Water Management
This study investigated the impact of ageing on the chemical and rheological properties of bitumen using FTIR and DSR tests. A linear relationship was found between the combined ageing index and the distance in the crossover map. The results were validated using data of field aged samples.
Ageing has a significant impact on the chemical and mechanical properties of bituminous materials. In this study, Fourier Transform Infrared (FTIR) spectrometer and Dynamic Shear Rheometer (DSR) tests were utilised to investigate the effect of ageing on the chemical and rheological properties of bitumen. Bitumen films with thickness of 2 mm were exposed to laboratory ageing at various conditions. Specifically, different combinations of ageing time, temperature and pressure were applied on the bitumen samples. The FTIR results were used to quantify the changes in the chemical functional groups and to calculate the combined ageing index (summation of carbonyl and sulfoxide indices) of bitumen. In addition, the DSR test results were analysed to determine the evolution of the black diagrams, crossover frequency and crossover modulus with ageing. A linear relationship was found between the combined ageing index and the distance in the crossover map, providing thus a chemo-mechanics framework to describe bitumen ageing. The results were validated by using data of field aged samples.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据