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Crushed Brick / Lime Mortars of Justinian's Hagia Sophia

Published online by Cambridge University Press:  26 February 2011

A. Moropoulou ,
A. Cakmak  and
G. Biscontin
A. Moropoulou
Affiliation:
Materials Science and Engineering Section, National Technical University of Athens, 9, Iroon Polytechniou St., Zografou 157–73, Athens, Greece, amoropul@central.ntua.gr
A. Cakmak
Affiliation:
Dpt of Civil Engineering and Operations Research, School of Engineering and Applied Science, Princeton University, Princeton, NJ 08544, ahmet@tremor.princeton.edu
G. Biscontin
Affiliation:
Dpt di Scienze Ambientali, Universita di Venezia, Calle Larga S. Marta 2137, 30123 Venezia, Italy, bisco@unive.it
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Abstract

Structural studies to determine the earthquake worthiness of Hagia Sophia in Istanbul have proved that the monument's static and dynamic behavior depends very strongly on the mechanical and chemical properties of these mortars and bricks used in its masonry. So, the cementrtious nature of the mortars not only explains the fact that the monument still stands but also the very large static deformations which it has undergone, since such mortars have a very long curig period from one to two years. According to the analysis of the dynamic data, the strong motion data from a 4.8R magnitude earthquake about 120 Km south of the building was used to determine the first three natural frequencies of the building. These results show a decrease of about 5–10% in the natural frequencies, as the amplitude of the accelerations increases and returns to their initial values, due to the non-linear nature of the masonry. The above mentioned behavior allows the structure to absorb energy without effecting its material properties, irreversibly. The properties of the mortars and bricks leaded to an extensive study, employing several experimental techniques (FOM, OM, XRD, SEM, TEM, TG/DTA). The results indicated mortars with considerable mechanical strength along with longevity. The model used proved to be resistant to the environmental pollution and to the presence of sah, while the gel phase as binder allows for greater energy absorption and the compatibility of the mortar to the original ones allows continuous stresses and strains. Hence, the recreation of the Hagia Sophia is attempted through a reverse engineering approach to simulate the historical mortars.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 462: Symposium DD – Materials Issues in Art and Archaeology V , 1996 , 307
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1. Cakmak, A.S., Davidson, R., Mullen, C.L. and Erdik, M. (1993), in Dynamic Analysis and Earthquake Response of Haaia Sophia. Proc. of STREMA ‘93, 3rd Intern. Conf, Bath, UK, June 16–18, 1993.Google Scholar
2. Cakmak, A.S., Moropoulou, A., Mullen, C.A., in Interdisciplinary Study of Dynamic Analysis and Earth Response to Haeia Sophia. J. of Soil Dynamics and Earthquake Engineering, 14 (1995), 125–133 Google Scholar
3. Moropoulou, A., Bakolas, A., Micahelidis, P., Chronopoulos, M., Spanos, Ch., in Traditional technologies tn Crete providing mortars with effective mechanical properties. Proc, of STREMA ‘95, 4th Intern Conf 1995.Google Scholar
4. Day, W. and Glover, J. (1993) in The Application of Geophysical Technique to the Investigation and Assesment of Structures. Bridge Management 2, (Thomas Telford, London), pp. 747–756.Google Scholar
5. Erdik, M. and Cakti, E. (1993) in Instrumentation of Hagia Sophia and the Analysis of the Response of the Structure to an Earthquake of 4.8 Magnitude, Proc of STREMA ‘93, 3rd Intern Conf. Bath, UK, 1993Google Scholar
6. Findell, K., Koyluoglu, H.U. and Cakmak, A.S. (1993) in Modelling and Simulating Earthquake Accelerogramms Using Strong Motion Data from the Instabul, Turkey Region. Soil Dynamics and Earthquake Engineering, 1.Google Scholar
7. Livingston, A.R., Slutzman, E.P., Mark, R. and Erdik, M., in 1992 Preliminary analysis of the masonry of Hagia Sofia Basilika, Instabul. Mater. Res. Soc., vol. 267, p. 721–730 Google Scholar
8. Program agreement on the Seismic Protection of the Hagia Sophia between the Bogasizi University, Princeton University and National Technical Univesity of Athens, Instabul, Turkey, March 1994 Google Scholar
9. Mark, R., Cakmak, A.S., in Mechanical Test of Material from the Hagia Sophia Dorne. Dumbaron Dales Papers, Number Forty-eight, 1994.Google Scholar
10. Tassios, T.P., National Technical University of Athens test report sent as personal communication to A.S Cakmak, dated 1 Sep. 1993.Google Scholar
11. Geticonglu, T. STFA Inspection and Quality Control Research Consulting Co., Ltd., Instabul Turkey, test report sent as personal communication to A.S. Cakmak dated 1 Sep. 1993.Google Scholar
12. Yuzugullu, O., Durukal, E., and Beyen, K., in Assessment of Mortar and Brick Properties of Hagia Sophia by Non-destructive Testing Techniques. Pact J. 1996.Google Scholar
13. Moropoulou, A., Biscontin, G., Bisbikou, K., Bakolas, A., Theoulakis, P., Theodoraki, A., Tsiourva, Th., in Physico-chemical Study of Adhesion Mechanisms among Binding Material and Brick Fragments in “Coccio pesto”. Scienza e Bermi Culturali, Vol IX, 1993, pp. 373–387 Google Scholar
14. Moropoulou, A., Biscontin, G., Theoulakis, P., Zendri, E., Bakolas, A., Bisbikou, K., Theodoraki, A., in Study of Mortar in the Medieval City of Rhodes. Intem Congr on the Conserv. of Stone and other Mater, Unesco-Rilem editions, 1993, pp. 394–401.Google Scholar
15. Moropoulou, A., Theoulakis, P., in Conditions causing destructive NaCl crystalization into the porous sandstone building material of the medieval City of Rhodes. Proc. of the 2nd Intern. Symp. for the Conservation of Monuments in the Mediterranean Basin, Geneva 1991, p. 493.Google Scholar
16. Moropoulou, A., Bakolas, A., Bisbikou, K., in Thermal analysis as a method of characterizing ancient ceramic technologies, Thermochemica Acta 2570 (1995), p 743–753 Google Scholar
17. Moropoulou, A., Theodoraki, A., Bisbikou, K., Michaelidis, P., in Restoration Mortars Synthesis of crushed brick imitating Byzantine lime and material technologies in Crete. Mater. Res. Soc. Symp. Proc. Vol. 352, 1995, p. 759–769.Google Scholar