Hydration and Microwave Curing Temperature Interactions of Repair Mortars

Microwave curing of repair patches provides an energy efficient technique for rapid concrete repair. It has serious economic potential due to time and saving especially repairs in cold weather which can cause work stoppages. However, the high temperatures resulting from combination microwave exposure accelerated hydration cementitious materials need be investigated prevent durability problems patch repairs. This paper investigates magnitude peak temperature during (MC) six cement based a CEM II mortar. Repair material specimens were cured surface 40-45 °C while their internal monitored. Their was further monitored up 24 hours order determine effect on heat hydration. The results show that short period early age increases brings forward relative control are continuously exposed ambient conditions (20 °C, 60% RH). normal density, hardening Portland with either pfa or polymer addition almost merges end period. Similarly, lightweight modified also develop rapidly density ordinary materials, without addition, occurs post sum easily exceed limit about 70 some at very age, problems.