The Research Of Tla Modified Asphalt In Expressway

In the existing highway construction, SBS modified asphalt has been very widely used, but with the continuous improvement of SBS prices, and the emergence of a variety of road damage intensifies, people started looking for an affordable and road performance bituminous material and is very advantageous to replace SBS modified asphalt. Through the use of effects and engineering practice some practical projects, people began to discover Trinidad Lake Asphalt has certain advantages with the performance on the road. This paper studies the application of technology research highway lake modified asphalt in, mainly from the modified asphalt mechanism lake, Lake factors affect the performance of asphalt mixture, asphalt lake in the hot and evaluation studies and regions, the Lake bitumen Research on compatibility and Indoor processing these four aspects to carry out the research, the main conclusions are as follows:① Test by four-component bitumen components can be seen, softening point and a greater impact by changes in asphaltene bitumen content, asphaltene content to a large extent affected the high temperature performance of asphalt.② Rock asphalt and lake asphalt and asphalt comparison, aromatic and saturated Fen Fen significantly lower content of glial little difference, a significant difference is asphaltene content was significantly higher than the asphalt.③ Do not have the kind of pitch change in contact angle with a liquid is not significant, it can be said that has little effect on the relationship between the type of contact angle of bitumen.④ The same bitumen with different kinds of liquid when the type of test, it can be seen, the surface tension of their size and the contact angle between the liquid itself has a very good correlation, and the greater the surface tension of the liquid, the two the contact angle between the greater becomes. The law is the same with the powder.⑤ Combination of dry and wet test results are summarized analysis, resulting in a wet process under conditions of high temperature performance improvement is not significant because: lake modified asphalt mixing pot in place before, since some precipitation occurred ash, a direct result of the Unstable lake modified asphalt bitumen quantity and ash content in the conventional wet process, the uneven ash This phenomenon is inevitable, so in the process, using dry processing technology to achieve more good performance results.⑥ Dry and wet processing have little effect on the Marshall stability of asphalt lake, and its value is far greater than the stability specification of technical requirements. It also shows that Marshall indicators for lake modified asphalt, the technical indicators are not controlled.⑦ PG classification method SHRP research results can be effectively evaluated for TLA modified asphalt.⑧ From the perspective of compatibility, TLA and asphalt basically there is no compatibility problem that with any kind of asphalt are simply using basic physical heating and mechanical stirring manner can be.