Laboratory and Field Evaluation of Rapid Setting Materials Used for Repair of Concrete Pavements

摘要

Minimizing lane down-time is of key importance when repairing concrete pavements in high traffic volume areas. As a result, rapid setting repair materials are in great demand. Many such products are available, however, they differ widely in chemical composition, workability, durability, and cost. The following four proprietary rapid setting materials were chosen for laboratory and field evaluation: (1) Duracal (a water-activated blend of portland cement and gypsum); (2) Set-45 (a water-activated magnesia phosphate); (3) Gilco Highway Patch (a water-activated modified portland cement); and (4) Neco-crete (a magnesia powder which is activated by an ammonium phosphate solution).