Synthesis report: D-cracking in portland cement concrete pavements
Abstract
The mechanisms and testing procedures for D-cracking in portland cement concrete pavements are examined. Benefication procedures are also investigated. The three general responses to freezing in the aggregate/paste system include elastic accommodation, high internal pressure, and high external pressure. It is found that the critical aggregate parameters influencing D-cracking are degree of saturation, maximum particle size, permeability, porosity, and pore size distribution. Evaluation of present laboratory testing procedures indicated that the ASTM C666, VPI slow-cool, Mercury Porosimetry, and Iowa Pore Index Tests correlated the best with field performance of concrete with respect to D-cracking.
- Publication:
-
Civil Engineering Studies
- Pub Date:
- June 1980
- Bibcode:
- 1980uill.rept.....T
- Keywords:
-
- Cements;
- Concretes;
- Cracking (Fracturing);
- Pavements;
- Freezing;
- Internal Pressure;
- Particle Size Distribution;
- Performance Tests;
- Permeability;
- Porosity;
- Engineering (General)