Large-Scale Laboratory Trials of Self-Healing Technologies

Prolonging the life of reinforced concrete structure is most promising solution to reduce carbon emissions from concrete. To achieve that, should be protected crack formation, which acts as an easy pathway for deleterious agents. Self-healing technologies are intended provide long-term resilience against cracking due various deterioration processes. Technologies that performed well in small, laboratory-scale studies taken next level assess their performance on a larger scale and monitored using NDT equipment. A 1m long beam with cross-section (140×120 mm) was cast two rebars – one cover depth 50 mm top another 20 bottom. The mix design consists CEM IIIA (50 OPC: Slag) cement 30% lightweight aggregate replacement coarse aggregate. At 28 days curing, beams subjected accelerated corrosion (by applying voltage bottom rebar) induce internal cracking. Once induced, under water healing. via ultrasonic pulse velocity half-cell potential before after application. This paper shows preliminary results self-healing efficiency resistance these continuously being severe chloride conditions predict performance.