AN INTEGRATED DIAGNOSTIC STUDY OF THE BUILDING MATERIALS OF THE

WALLSAT THE IALYSSOSACROPOLIS (SARANTAPICHOS), RHODES

A. Bakolas , E.T. Delegou , E. Ksinopoulou , E. Tsilimantou , K.C. Labropoulos , E.1 1 1 2 1

Oikonomopoulou , J. Sayas , A. Moropoulou2 2 1*

1 SchoolofChemicalEngineering,NationalTechnicalUniversityofAthens,9,IroonPolytechnioustr.,15773Athens,

Greece

2SchoolofRuralandSurveyingEngineering,NationalTechnicalUniversityofAthens9,IroonPolytechnioustr.,15773

Athens,Greece

*Tel:+30-210-772-3276,Fax:+30-210-772-3215,e-mail:amoropul@central.ntua.gr

ABSTRACT

An integrated diagnostic study of the building materials of the walls at the Ialyssos Acropolis

(Sarantapichos), Rhodes was carried out using ultrasonics, infra-red thermography, fibre optics microscopy

and ground penetrating radar, supported by an array of instrumental characterization techniques which

included polarized optical microscopy, X-ray diffraction, scanning electron microscopy, mercury

porosimetry and conductivity measurements to characterize the structural materials and their decay products.

Results revealed the extensive biodecay present on grey compact limestone, as well as cracking,

delamination and detachment of original material. Moreover, decay mapping was elaborated by the

utilization of GIS where it was noted that the grey compact limestone is more susceptible to the growth of

crustoseepilithiclichensthantofungibiodecay.

Key-words: NDT,decaymapping,GIS,archaeologicalsite