OPTIMIZATION ASSESSMENT OF COMPATIBLE REPAIR BYZANTINE CONCRETE FOR THE HISTORIC STRUCTURES’ RESTORATION INTERVENTION

Abstract

The present work is dealing with the optimization assessment of repair Byzantine concrete addressed to restoration interventions on thick joints brickwork masonries of Byzantine era. The design of these materials was based on the data obtained by the characterization of historic concrete of typical Byzantine era monuments that presented a great durability in time. Traditional materials (hydrated lime, hydraulic lime, pozzolanic additions, sand and brick fragments) are used for the concrete preparation. The mechanical characteristics of concrete syntheses are evaluated by using mechanical tests (compressive strength, flexural strength, static modulus of elasticity) and ultrasonic technique (ultrasonic velocity, dynamic modulus of elasticity) at the time of 1, 3, 6 and 12 months. The obtained results indicate that the concrete prepared by a high mixing ratio of lime/metakaolin present sufficient values of compressive strength, flexural strength and static modulus of elasticity.