An experimental campaign was carried out to compare the results of IRT and GPR applied to the most common masonry types of historical buildings (regular brickwork, irregular stonework, and a mixed one) covered by different types of plasters (traditional fresco of natural hydraulic lime - NHL, and hydraulic lime-based – HL, or cement-based - C ones). Some of the modern plasters refer to an intervention technique, i.e., jacketing, which is commonly applied to masonry walls to improve their mechanical performances, especially in seismic zone. In such case, plasters were reinforced by welded steel meshes or innovative BTRM (basalt textile reinforcing matrix, including thin steel threads). Artificial anomalies were realized at various depths from the surface, simulating detachments at the plaster-masonry interface or inclusions of other materials at the masonry face level.
Effect of type of plasters in detection of anomalies on masonry panels by IRT and GPR investigations
M. R. Valluzzi
;R. Deiana
2025
Abstract
An experimental campaign was carried out to compare the results of IRT and GPR applied to the most common masonry types of historical buildings (regular brickwork, irregular stonework, and a mixed one) covered by different types of plasters (traditional fresco of natural hydraulic lime - NHL, and hydraulic lime-based – HL, or cement-based - C ones). Some of the modern plasters refer to an intervention technique, i.e., jacketing, which is commonly applied to masonry walls to improve their mechanical performances, especially in seismic zone. In such case, plasters were reinforced by welded steel meshes or innovative BTRM (basalt textile reinforcing matrix, including thin steel threads). Artificial anomalies were realized at various depths from the surface, simulating detachments at the plaster-masonry interface or inclusions of other materials at the masonry face level.
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