废胶粉改性沥青及其OGFC混合料高温性能研究

Study on High Temperature Properties of Crumb Rubber Modified Asphalt and Its OGFC Mixture

为研究废胶粉改性沥青及其OGFC混合料的高温性能,采用软化点试验、布氏黏度试验、DSR试验研究废胶粉改性沥青的高温性能,车辙试验研究废胶粉改性沥青的OGFC混合料高温性能。结果表明:废胶粉高温性能随废胶粉掺量的增加更优越;废胶粉掺量增加,OGFC混合料高温性能提高;将废胶粉改性沥青的高温性能与废胶粉改性沥青OGFC混合料高温性能综合分析,沥青高温性能试验与废胶粉改性沥青OGFC混合料车辙试验结果整体一致。

In order to study the high temperature performance of crumb rubber modified asphalt and OGFC mixture,the high temperature performance and rutting test of crumb rubber modified asphalt was studied by softening point test, Brinell viscosity test and DSR test. The high temperature performance of crumb rubber modified asphalt OGFC mixture was studied by rutting test. The results showed that the high temperature per-formance of waste rubber powder was better than that of the waste rubber powder. With the increase of waste rubber powder content,the high temperature performance of OGFC mixture was improved. The high tempera-ture perforrrmnce of crumb rubber modified asphfdt find the high temperature perform￡ince of crumb rubber modified asphalt OGFC mixture were analyzed. The results showed that the high temperature performance of asphalt mixture was consistent with the test results of crumb rubber modified asphalt OGFC mixture.