ELAICH - Educational Linkage Approach in Cultural Heritage. For more information and presentations, please visit: http://elaich.technion.ac.il/ The use of infrared thermography to assess compatibility of building materials: The cases of Hagia Sophia and the Venetian Fortifications of Herakleion

1. Educational Linkage Approach In Cultural Heritage
Educational Toolkit
Exercises
Basic Course
Cours
Module 2 Knowing the built heritage
The use of infrared thermography to assess compatibility of building
Exercise 2 .C materials: The cases of Hagia Sophia and the Venetian Fortifications of
Herakleon
Prof. Antonia Moropoulou - NTUA – National Technical University of Athens

2. Educational Linkage Approach In Cultural Heritage
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Prof. Antonia Moropoulou - NTUA – National Technical University of Athens

3. The porous structure of
materials and the study of their
compatibility in relation to
water and soluble salts
transport phenomena
Prof. Antonia Moropoulou 3

4. THE USE
OF INFRARED THERMOGRAPHY (IRT) TO
ASSESS COMPATIBILITY OF BUILDING
MATERIALS
Prof. Antonia Moropoulou 4

5. COMPATIBLE REPAIR MORTARS FOR THE
EARTHQUAKE PROTECTION OF
HAGIA SOPHIA
Prof. Antonia Moropoulou 5

6. RERAIR MORTARS SYNTHESES
Ι. AERIAL LIME MORTAR
BINDING MATERIAL: LIME PUTTY
ΙΙ. HYDRAULIC MORTARS
HYDRAULIC LIME MORTARS
MORTARS WITH POZZOLANIC MORTARS
a) Lime Putty (25%) – Ceramic Fragments (37.5%) - Sand (37.5%)
b) Lime Putty (20%) – Ceramic Powder (10%) Sand (31,5%) – Ceramic
Fragments (38,5%)
c) Hydraulic Lime (25%) – Ceramic Fragments (37.5%) - Sand (37.5%)
Moropoulou, A., Bakolas, A., Moundoulas, P., Aggelakopoulou, E., Anagnostopoulou, S., 2001
Prof. Antonia Moropoulou 6

7. WATER ABSORPTION TESTS COMBINED WITH INFRA RED
THERMOGRAPHY MONITORING
W a te r A b s o r p tio n o f P o r o u s S to n e & M o r ta r s
25
ST1
20
Imbibed Water, wgt. %
HLS1
15
LS1
10
CS1
5
0
0 20 40 60 80 100 120
(T im e , s e c ) 1 /2
STONE (ST1) HYDRAULIC MORTAR (HLS1) LIME MORTAR (LS1) CEMENT MORTAR (CS1)
Prof. Antonia Moropoulou 7

8. S im u la tin g P ro to ty p e s - E v a p o r a tio n
R H = 60% and T = 25C & 40C 40C
25C
0 .2 5
SP3
0 .2
SP2
Weight Loss (%)
0 .1 5
0 .1
STONE – LIME MORTAR –
SP1
STONE SYSTEM (SP1)
0 .0 5
0
0 10 20 30 40 50 60
(T im e , s e c ) 1 /2
Moropoulou, Moundoulas, Avdelidis, Bakolas 2003
STONE – HYDRAULIC MORTAR
The systems with lime and hydraulic mortars present compatibility
– STONE SYSTEM (SP2)
with the reference stone during evaporation, while the system with
cement mortar present incompatible behavior and different levels of
humidity concentration during evaporation (monitoring with infra
red thermography)
STONE – CEMENT MORTAR –
STONE SYSTEM (SP3)
Prof. Antonia Moropoulou 8

9. VENETIAN FORTIFICATIONS
OF HERAKLION
Prof. Antonia Moropoulou 9

10. Venetian Fortifications of Heraklion
Presentation of the sampling points
1: ΟΑΝΑΚ
2: Stadium
3: Basket
4: St. Andrews
Moropoulou, Koui, Avdelidis
et. alls. 1999
Galati, Koui, Moropoulou,
Delegou, 2000
Moropoulou, Delegou 2003
Prof. Antonia Moropoulou 10

11. Venetian Fortifications of Heraklion
GIS presentation
of sampling
points
with respective
IR thermographs
Moropoulou, Koui,
Avdelidis et. alls. 1999
Galati, Koui, Moropoulou,
,
Delegou 2000
Moropoulou, Delegou
2003
Prof. Antonia Moropoulou 11

12. • The cementitious repair mortars are
attributed with “hot” colors (higher T)
• The building stones are attributed with “cold”
colors (lower T)
The difference in temperature distribution
between the masonry materials indicates
different humidity distribution and
incompatibility of the cementitious repair
mortars with the historic building materials
Prof. Antonia Moropoulou 12