Development of Laboratory Methods for Determining D-Cracking Susceptibility of Ohio Gravel and Limestone Coarse Aggregates in Concrete Pavements.

摘要

The D-cracking susceptibility of Ohio gravel and limestone coarse aggregates can be determined in the laboratory by a rapid freeze and thaw test performed in a manner similar to ASTM C 666Procedure A or B. Procedure A is much more severe than Procedure B and test results can therefore be obtained more rapidly. Test data from both methods correlate well with the service records of coarse aggregates used in concrete pavements. The absorption-adsorption test does not appear to be a desirable method of determining D-cracking susceptibility of Ohio limestone and gravel coarse aggregates. Test data obtained by this method does not correlate well with aggregate service records.