橡胶沥青黏度衰减规律研究

Study on Viscosity Attenuation Law of Rubber Asphalt

摘要:

随着我国经济的快速发展，汽车保有量激增，废旧轮胎的处理成为亟待解决的环境与资源问题。为促进废旧轮胎的有效回收利用，通过橡胶沥青布氏旋转黏度试验、Haake黏度试验和混合料性能试验，分析了橡胶沥青的黏度衰减规律及其对橡胶沥青混合料路用性能的影响。研究结果表明，采用不同橡胶粉的橡胶沥青黏度均会随着时间增长而逐渐降低，且会对成品混合料路用性能产生影响，因此橡胶沥青生产完成后不宜长时间储存。此外，布氏旋转黏度与Haake黏度试验结果变化规律完全一致，说明2种方法都可用于橡胶沥青的黏度测试与评价。

Abstract:

With the rapid development of economy in China, the number of cars has increased rapidly, and the disposal of waste tires has become an urgent environmental and resource problem. In order to promote the effective recycling and utilization of waste tires, through the Brinell rotational viscosity test, Haake viscosity test and mixture performance test of rubber asphalt, the viscosity attenuation law of rubber asphalt and its impact on the pavement performances of rubber asphalt mixture are analyzed. The research results indicate that the viscosity of rubber asphalt using different rubber powders will gradually decrease with the time increase, and it will also have an impact on the pavement performance of the asphalt mixture. Therefore, it is not advisable to store rubber asphalt for a long time after its production is completed. In addition, the changes in Brinell rotational viscosity and Haake viscosity test results are completely consistent, which indicates that both methods can be used for viscosity testing and evaluation of rubber asphalt.