Inspecting the healing process in an artificial stone used for repair works containing crystallines

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Published: Dec 22, 2022
DOI: https://doi.org/10.12681/ta.32160
Keywords:
Artificial stone Healing Mechanical Properties Physical Proper-ties 3D acoustic tomography
Evangelia Tsampali
Laboratory of Building Materials, School of Civil Engineering, Aristotle University of Thessaloniki, Greece
Stamatios Amanatiadis
Ormylia Foundation, Ormylia Art Diagnosis Centre, Greece
Georgios Karagiannis
Ormylia Foundation, Ormylia Art Diagnosis Centre, Greece
Maria Stefanidou
Laboratory of Building Materials, School of Civil Engineering, Aristotle University of Thessaloniki, Greece
Abstract

Stone has been a basic building material of different monuments and structural components such as foundations and masonry. At the same time, dif-ferent types of stones have been used for decorative architectural elements, such as cornices, reliefs, colonnettes, and corbels. The maintenance of stone ele-ments is essential for the continuity of these structures. Many studies have been performed to produce stones with artificial materials. This study aims to present a new approach to artificial stone with self-healing capability. Crystallines have been implied in two different dosages: 0.8 and 1.6% w./w, to achieve this goal. The addition of the crystalline admixtures affected the physical properties, de-creasing the porosity and the capillary absorption, proving the sealing properties of the admixtures. The self-healing efficiency has been tested with the sorption test, recovery of compressive strength, and 3D acoustic microscopy. The crys-talline admixtures accelerate the self-healing, increasing the sealing efficiency by 20% and recovering compressive strength by 15%. The analysis by 3D to-mography provided results that confirm the healing of the crack hasn't occurred only on the surface but extended to a certain depth.

Article Details
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  • Uni and interdisciplinary approach for the sustainable preservation of Cultural Heritage
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Author Biography
Georgios Karagiannis , Ormylia Foundation, Ormylia Art Diagnosis Centre, Greece

Diagnosis Multisystems, N. Moudania, Chalkidiki, Greece

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