01698437

Component

A full-scale experiment was conducted at the Florida Department of Transportation's (FDOT’s) accelerated pavement testing (APT) facility to assess the impact of different in-place density levels on asphalt pavement performance. Three test sections having similar underlying condition and asphalt mixture were constructed. A typical 12.5-mm fine-graded Superpave asphalt mixture used in Florida with a PG 76-22 polymer modified asphalt (PMA) binder was placed at target in-place densities of 87%, 90%, and 93%, respectively, while complying with all the other standard FDOT construction and materials specifications and methods. The findings of this experiment showed that higher in-place density corresponded to better rutting performance, and higher indirect tensile (IDT) strength which is indicative of better cracking resistance. The Cantabro loss test results showed that higher in-place density resulted in lower material loss which is indicative of better raveling resistance. Results from the Dynamic Friction Tester (DFT) showed that in-place density did not affect surface friction. The surface macrotexture mean profile depth (MPD) data showed that higher in-place density resulted in the lower MPD during Heavy Vehicle Simulator (HVS) testing.

This paper was sponsored by TRB committee AFH60 Standing Committee on Asphalt Pavement Construction and Rehabilitation.

19-01863

English

8p

2019

Transportation Research Board 98th Annual Meeting

Digital/other

Figures; References; Tables

Accelerated tests; Asphalt pavements; Friction; In place density; Pavement performance; Polymer asphalt; Rutting; Stripping (Pavements); Superpave

Indirect tensile strength; Mean profile depth

Florida

Construction; Highways; Pavements

Transportation Research Board Annual Meeting 2019 Paper #19-01863

TRIS, TRB, ATRI

Dec 7 2018 9:34AM