In-situ investigation of stone consolidation effects with immersed ulttrasonic double-probe

0532346 - ÚTAM 2021 RIV DE eng C - Konferenční příspěvek (zahraniční konf.)
Drdácký, Miloš - Eisler, Marek - Krompholz, R.
In-situ investigation of stone consolidation effects with immersed ulttrasonic double-probe.
Monument future. Decay and conservation of stone. Proceedings of the 14th International congress on the deterioration and conservation of stone. Halle: Mitteldeutscher Verlag, 2020 - (Siegesmund, S.; Middendorf, B.), s. 233-238. ISBN 978-3-96311-172-3.
[International congress on the deterioration and conservation of stone /14./. Göttingen (DE), 07.09.2020-12.09.2020]
Institucionální podpora: RVO:68378297
Klíčová slova: moderately destructive method * stone * ultrasonic investigation * consolidation
Obor OECD: Materials engineering

This paper introduces a portable ultrasonic double-hole probe capable of recording changes in material properties along a depth profile and assessing consolidant penetration depth. Application of the device requires drilling two 20 mm holes of arbitrary distance in the surface layer of the masonry. The holes can be drilled directly into a continuous stone block or advantageously in the mortar joints between blocks, provided that appropriate contacts are achieved between the probe transmitter and receiver and the continuous stone. This moderately destructive method is useful mainly for conducting measurements on stone masonry facades or structures in which drilling holes, with subsequent repair, is acceptable. Consolidation assessment is demonstrated on quartz sandstone blocks in a laboratory as well as on a masonry wall made of the same ashlar blocks. The probe is fully compatible with ultrasonic laboratory equipment, e. g. UKS 12 or UKS 14 Geotron Elektronik.
Trvalý link: http://hdl.handle.net/11104/0318738