Study on indoor pavement performance of diatomite-modified asphalt mixture

摘要

In order to improve the pavement performance of asphalt material, diatomite was used as a modifier to prepare diatomite-modified asphalt with 70~# asphalt, and selected the AC-20 gradation and asphalt-aggregate ratio of 4.2% to mix and make the diatomite-modified asphalt mixture in this article, then compared different content diatomite-modified asphalt mixture through marshall, freeze-thaw splitting and rutting test. The results show that the strength, water stability and high temperature stability of asphalt mixture are greatly improved after modification, and its indoor pavement performance is relatively better when the content is 13%.