Methodology for predicting the reflection cracking life of asphalt concrete overlays
Abstract
An experimental testing procedure was established, for quantitative analysis of overlays designed to reduce reflection cracking. From this testing procedure the overlay scheme that shows the most resistance to cracking can be chosen. The procedure uses crack propagation tests on overlay samples which are conducted on a machine called the overlay tester. This machine was specifically built to stimulate the displacements resulting from temperature changes in the cracked or jointed pavement or base materials that are beneath an overlay. Various types of overlay samples were investigated on the overlay tester. These include samples with fabric, such as 'Petromat', and samples composed of different grades of asphalt.
- Publication:
-
Interim Report
- Pub Date:
- March 1979
- Bibcode:
- 1979tamu.reptQ....G
- Keywords:
-
- Concretes;
- Cracking (Fracturing);
- Experiment Design;
- Life (Durability);
- Pavements;
- Crack Propagation;
- Mathematical Models;
- Structural Strain;
- Temperature Effects;
- Thickness Ratio;
- Engineering (General)