Evaluation of full depth asphaltic concrete pavements : final report.
-
1982-10-01
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:the aim of this study was to evaluate the full depth asphaltic concrete pavement design concept by observing the performance characteristics of two 13-inch pavements constructed in 1970. Pavement performance measurements, over an 11-year period, included Dynaflect deflections, Mays Ride Meter serviceability measurements, as well as documentation of rutting, cracking, and patching.
At five years of age one of the pavement (Interstate I-20) had experienced surface raveling and intermittent wheelpath cracking. By 1977 the raveling and cracking had intensified to the extent that the pavement required resurfacing to restore surface continuity and to seal out surface water. During the same period the full depth pavement on Interstate 12 developed longitudinal and transverse cracking along with surface raveling, but has not required resurfacing. Both pavements are beginning to require spot patching in the wheelpaths and have carried approximately 35% of their designed traffic loads.
Roadway cores indicated a fatigue failure of the wearing and binder course layers. Rapid oxidation of the AC-40 wearing course and an unstable binder course layer are cited as contributing to the early failures. A change in asphalt type (AC-40 to AC-30) along with the addition of antistrip additives is expected to enhance performance of subsequent full depth pavements beyond level observed in this study.
-
Format:
-
Collection(s):
-
Main Document Checksum:
-
File Type:
Supporting Files
-
No Additional Files
More +