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1. Educational Linkage Approach In Cultural Heritage Prof. Antonia Moropoulou - NTUA – National Technical University of Athens The Conservation Process Module 4 Teaching Material Topic 4 . 7 Criteria & Methodology for Consolidation Pilot applications & case studies Advanced Topic Educational Toolkit

2. Educational Linkage Approach In Cultural Heritage Prof. Antonia Moropoulou – National Technical University of Athens Copyright ©ELAICH Beneficiaries 2009-2012 This material is an integral part of the “ELAICH – educational toolkit” and developed as part of the project ELAICH – Educational Linkage Approach in Cultural Heritage within the framework of EuroMed Cultural Heritage 4 Programme under grant agreement ENPI 150583. All rights reserved to the ELAICH Beneficiaries. This material, in its entirety only, may be used in "fair use" only as part of the ELAICH – educational toolkit for the educational purposes by non-profit educational establishments or in self-education, by any means at all times and on any downloads, copies and or, adaptations, clearly indicating “©ELAICH Beneficiaries 2009-2011” and making reference to these terms. Use of the material amounting to a distortion or mutilation of the material or is otherwise prejudicial to the honor or reputation of ELAICH Beneficiaries 2009-2011 is forbidden. Use of parts of the material is strictly forbidden. No part of this material may be: (1) used other than intended (2) copied, reproduced or distributed in any physical or electronic form (3) reproduced in any publication of any kind (4) used as part of any other teaching material in any framework; unless prior written permission of the ELAICH Beneficiaries has been obtained. Disclaimer This document has been produced with the financial assistance of the European Union. The contents of this document are the sole responsibility of the ELAICH Consortium and can under no circumstances be regarded as reflecting the position of the European Union.

3. Abstract Educational Linkage Approach In Cultural Heritage Prof. Antonia Moropoulou – National Technical University of Athens This presentation introduces the theme of consolidation, one of the major types of conservation interventions applied on the built heritage. The definition of consolidation and the aim of its application are explained. Selection criteria and the basic types of consolidation materials are also pointed out. Moreover, the advantages of advanced particle modified consolidants are presented, along with the assessment methodology of consolidation materials. For the better understanding of the theoretical background of consolidation, the case study of Medieval City of Rhodes is presented. Examples of pilot application of consolidation materials are displayed, whereas representative results of analytical and NDT techniques applied on site for the assessment of consolidants are demonstrated.

4. Content Educational Linkage Approach In Cultural Heritage Prof. Antonia Moropoulou – National Technical University of Athens Table of contents of this presentation 4.7.1 Consolidation definition and aim of its application 4.7.2 How do we select consolidants- criteria 4.7.3 Basic types of consolidants 4.7.4 Advantages of advanced particle modified consolidants 4.7.5 Assessment methodology of consolidation materials 4.7.6 Examples of pilot consolidation interventions application – the case study of Medieval City of Rhodes 4.7.7 Assessment of pilot consolidation interventions – presentation of representative results 4.7.8 Assessment conclusions

9. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Advanced Particle Modified Consolidants PMC in Ohio sandstone. Small spheroidal particles are titania pigment. Dynamic elastic modulus of Ohio Masillian sandstone before and after consolidation with PMC (● , ◦ ) and Conservare OH-100 (  , Δ) Aggelakopoulou E., Charles P., Acerra M.E., Garcia A.I., Flatt R.J. and Scherer G.W. “Rheology Optimization of Particle Modified Consolidants” in Materials Issues in Art & Archaeology VI, MRS Symposium Proc. Vol. 712, eds. P.B. Vandiver, M. Goodway, and J.L. Mass (Materials Res. Soc., Warrendale, PA, 2002) pp.15-20 Escalant M.R., Flatt R., Scherer G.W., Tsiourva D., Moropoulou A. “Particle-modified Consolidants”, in Protection and Conservation of the Cultural Heritage of the Mediterranean Cities, eds. E. Galán and F. Zezza (Balkema, Lisse, The Netherlands, 2002) pp. 425-429 Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

10. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Which is the methodology followed for the assessment of the applied consolidation materials and interventions? Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies Property Measurement Technique Physicochemical compatibility Assessment of permeability and water-absorption In situ: IR Thermography Lab : Water sorption measurements Cohesion enhancement Assessment of consolidation penetration depth In situ : Utrasonics Lab : Mechanical strength tests Whether the modification of the microstructural characteristics increases the durability (physicochemical strength) against environmental loads Assessment of microstructure and decay rate In situ : Fibre Optics Microscopy Lab : Microstructural measurements and accelerated ageing tests

12. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Building material: Fossiliferous calcareous highly porous stone, where microcrystalline calcitic binder is embedded by calcareous aggregates Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

13. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Application Sites Immediately after the application of consolidation 3 months after the application of consolidation Entrance of the Moat Masonry constructed of smaller and equally sized blocks of concrete and less deteriorated stone. The humidity level of the stone was lower than in St Paul ’ s Gate. Moropoulou, Tsiourva, Theoulakis, Koui et. al, 2000 Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

14. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Immediately after the application of consolidation 3 months after the application of consolidation St Catherine ’ s Hospice The application was performed on internal wall surfaces, recently restored by freshly quarried stones, yet presenting recession of the surface and material loss. Application Sites Moropoulou, Tsiourva, Theoulakis, Koui et. al, 2000 Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

15. Educational Linkage Approach In Cultural Heritage Acropolis of Athens St Paul ’ s Gate In vicinity to the sea. The application surface is south oriented and the backside of the walls is continuously fed by salt solution due to the sea environment. Application Sites Immediately after the application of consolidation 3 months after the application of consolidation Moropoulou, Tsiourva, Theoulakis, Koui et. al, 2000 Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

16. Educational Linkage Approach In Cultural Heritage Acropolis of Athens 15 months after intervention 15 months after intervention St Paul ’ s Gate Medieval City of Rhodes Presence of humidity in a porous material causes IR emission variations Physicochemical Compatibility Moropoulou, Koui, Kourteli, Theoulakis, Avdelidis, 2001 Assessment of Pilot Consolidation Interventions Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

17. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Physicochemical Compatibility Non Consolidated Stone Moropoulou, A., Bakolas, A., Moundoulas, P., Aggelakopoulou, E., Anagnostopoulou, S., 2001 EU PL PH RP Assessment of Pilot Consolidation Interventions Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies NC CSPH2 CSPL3 CSEU1 CSRP4 Good compatibility Not satisfactory compatibility Non consolidated

19. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Modification of Microstructure Non- treated Treatment with Ludox: SEM Treatment with Silbond: SEM Moropoulou, Tsiourva, Theoulakis, Koui et. al, 2000 Assessment of Pilot Consolidation Interventions Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

20. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Before consolidation After consolidation Evaluation of porous stone surface in the Medieval City of Rhodes with Fibre Optics Microscopy Moropoulou, Tsiourva, Theoulakis, Koui et. al, 2000 Modification of Microstructure Assessment of Pilot Consolidation Interventions Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

21. Educational Linkage Approach In Cultural Heritage Acropolis of Athens FTIR for non treated and treated porous stone samples – Medieval City of Rhodes Moropoulou, A., Tsiourva, Th., Biscontin, G., Bakolas, A., Michailidis, P., Zendri, E., 1997 Assessment of Pilot Consolidation Interventions Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies

22. Educational Linkage Approach In Cultural Heritage Acropolis of Athens Assessment of consolidant penetration depth in treated porous stone compared to non-treated porous stone using ultrasonics The application of consolidants enhances cohesion Moropoulou, Christaras, Tsiourva 1998 Prof. Antonia Moropoulou - Topic 4.7: Criteria & Methodology for Consolidation - Pilot applications & case studies