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

Published: Dec 22, 2022
Artificial stone Healing Mechanical Properties Physical Proper-ties 3D acoustic tomography
Evangelia Tsampali
Stamatios Amanatiadis
Georgios Karagiannis
Maria Stefanidou

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

Diagnosis Multisystems, N. Moudania, Chalkidiki, Greece

Papayianni I. Design of compatible repair materials for the restoration of monuments. Int J Restor 2004;1–6:623–36.
Gooch JW. Encyclopedic dictionary of polymers. Atlanda: Springer; 2011.
M. Stefanidou, V. Pachta, I. Papayianni Design and testing of artificial stone for the resto-ration of stone elements in monuments and historic buildings Construction and Building Materials Volume 93, 15 September 2015, Pages 957-965
Lee MY, Ko CH, Chang FC, Lo SL, Lin JD, Shan MY, et al. Artificial stone slab produc-tion using waste glass, stone fragments and vacuum vibratory compaction. Cement Concr Compos 2008;30:583–7.
C. Edvardsen, Water permeability and autogenous healing of cracks in concrete, ACI Ma-ter. J. 96 (4) (1999) 448–454.
M. Roig-Flores, F. Pirritano, P. Serna, L. Ferrara, Effect of crystalline admixtures on the self-healing capability of early-age concrete studied by means of permeability and crack closing tests, Construction and Building Materials 114 (2016) 447–457
M. Stefanidou, E. Evangelia, et. al., Techniques for recording self-healing efficiency and characterizing the healing products in cementitious materials, Material Design & Pro-cessing Communication, Volume 3, Issue 3, (2020)
E. Tsampali, E. Yfantidis, A. Ioakim, M. Stefanidou, Efficacy of different crystalline ad-mixtures in self-healing capacity of fibre reinforced concrete, Lorcenis Conference (2019).
Briggs, Andrew, ed. Advances in acoustic microscopy. Vol. 1. Springer Science & Busi-ness Media, 2013.