By Stavros K. (Ed.) Kourkoulis, Stavros K. Kourkoulis
The recovery and conservation of stone monuments is a classy multi-disciplinary job and the choices ultimately reached needs to be in response to a company and particular wisdom of the mechanical behaviour of either the genuine fabrics and the unreal stones. during this quantity scientists from varied disciplines (Structural Engineers, Archaeologists, Architects, Chemical Engineers, Geologists) current their adventure and their medical paintings in development in regards to the houses of a chain of stones which have been used for the erection of a few of an important stone monuments of the foreign cultural historical past and are used at the present time for substitution of lacking elements or final touch of broken ones. hence it really is obvious that the quantity should be a truly useful gizmo within the palms of a extensive number of scientists operating within the box of the development fabrics of historic monuments: It offers with the topic globally and it includes unpublished study effects in regards to the fabrics which are used or will be used for the conservation of the foreign cultural historical past.
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Extra info for Fracture and Failure of Natural Building Stones
10). 3. RESULTS AND DISCUSSION In this section, the SCG results of both four-point bending and double torsion test are presented and compared. 1 Four-point bending test The log-log plot of the crack growth rate, v, versus normalized SIF, KI/KIC, of 4PB tests on granite specimens in the environments of air, water and dilute sulphuric acid (pH value of 2) are shown in Figure 10. Studies on Subcritical Crack Growth in Façade Rock Panel 27 Figure 10. Log (KI /KIC) – log v curve for granite using four-point bending test.
19. G. G. Trantina, Stress analysis of the double torsion specimen, Journal of the American Ceramic Society 60, 338-341 (1977). 3 NOTCHED MARBLE SPECIMENS UNDER DIRECT TENSION: THE INFLUENCE OF THE SHAPE OF THE NOTCH Zacharias G. Agioutantis1, Stavros K. gr Abstract: In this paper the influence of the shape of the notch on the intensity of the strain field developed in marble plates subjected to direct tension was studied both experimentally and numerically. The specimens were made from Dionysos marble, the material used for the restoration project of the Parthenon Temple of Athens.
F. Wong are likely to bend under both thermal stress induced by sunshine and wind loads. Thus, to simulate a more realistic condition of cracking, 4PB test is proposed for subcritical cracking test in this study. It should be noted that the bending stress is constant in the middle one-third of the rock panel under four-point bending test. For comparison reasons, DTTs were also carried out. Both the K – v curve and the SCG index n are compared. 2. EXPERIMENTAL DETAILS In this section, the 4PB test method is first presented.