Design of concrete for restoration interventions on buildings of Byzantine era - Evaluation of their chemical and mechanical characteristics

Title: Design of concrete for restoration interventions on buildings of Byzantine era - Evaluation of their chemical and mechanical characteristics
Author(s): Antonia Moropoulou, Eleni Aggelakopoulou, Asterios Bakolas, Fotis Tzanetos, Panagiota Psymogerakou
Paper category : conference
Book title: International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur
Editor(s): J. Weiss, K. Kovler, J. Marchand, and S. Mindess
Print-ISBN: None
e-ISBN: 2912143926
Publisher: RILEM Publications SARL
Publication year: 2004
Nb references: 8
Language: English

Abstract: In the present work, a preliminary approach is attempted in order to design and evaluate restoration concrete for restoration interventions of monuments thick joints brickwork masonries of Byzantine era. The design of these materials was based on the data obtained by the characterisation of historic concrete of typical Byzantine era monuments that presented a great durability in time. Therefore, traditional materials (aerial lime, hydraulic lime, pozzolana, sand and brick fragments) are used for the concrete production that was evaluated at the time of 1, 3 and 6 months using mechanical tests (compressive, flexural) for the determination of mechanical strength and ultrasonic technique for the determination of dynamic modulus of elasticity. Furthermore, thermal analyses (DTA-TG) were performed for the chemical evolution evaluation of these composite systems in time. The obtained results indicate that the lime/artificial pozzolana (metakaolin) concrete present sufficient mechanical behavior (ratio of Fc/Ff and Ed value), while natural pozzolana used presented a low reactivity in reacting with Ca(OH)2. Several examined concrete seem to be in progress after 3 months of curing, fact that is confirmed by the evolution rate of mechanical characteristics and the Ca(OH)2 conversion.

Online publication: 2004-03-25
Classification: Degradation
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143926.069