Investigation of Damp and Salt Distribution in Outdoors Full-Scale Masonry Wall via Wireless Monitoring and Radar Testing

Abstract:

Porous construction materials such as masonry constituents are notoriously affected by weathering, pollutants attack and damp transport with manifest consequences on the masonry visible appearance and its mechanical reliability. Water transport mechanisms inside such materials as well as the chemical reactions and phase changes occurring in salt at varying combinations of temperature and humidity content have been previously studied. Nevertheless the investigation of damp and salts degradation processes since their appearance in real structural elements and the monitoring over time of their evolution is a problem never completely investigated...

• Periodical: Key Engineering Materials (Volume 624)
• Pages: 155-162
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.624.155
• Online since: September 2014
• Authors: Elena Gabrielli, Camilla Colla*
• Keywords: Brick, Crystallization Cycles, Masonry, Moisture, Monitoring, Radar, Rain, Salt, Weathering, Wireless Sensor

References

[1] Guerra E. P., Risanamento di murature umide e degradata. Sintomi e cause – Rimedi – Soluzioni progettuali. Dario Flaccovio Editore s. r. l. (2011), 336 pp.

[2] Borrelli E., Porosity, in Conservation of Architectural Heritage, Historic Structures and Materials ARC Laboratory Handbbok vol. 2, ICCROM, Atel spa, Rome (1999), 20 pp.

[3] Coppola, L., Collepardi, M., Il ruolo dell'umidità nel degrado dei materiali nelle murature, Il nuovo Cantiere, vol. 6 (1996), 44-51.

[4] Binda, L, Charola AE, Baronio, G. Deterioration of porous materials due to salt crystallisation under different thermohygrometric conditions. Proc. of 5th Int. Conf. on deterioration and conservation of stone, vol. I, Lausanne, Suisse, 1985, 279–288.

[5] Scherer, G.W. Stress from crystallization of salt, Cement and Concrete research 34, (2004) 1613-1624.

DOI: 10.1016/j.cemconres.2003.12.034

[6] Collepardi, M., Collepardi, S., Troli, R. Salt weathering of masonry walls the Venice experiences", Proc. of CANMET/ACI Int. Conf., Salonicco, Greece, June 2003, pp.

[7] Colla, C., Gabrielli, E., Largo, A., Angiuli, R. Experimental studies by combined NDT of capillary rise monitoring in masonry specimens", Proc. of EWCHP-2011, European Workshop on Cultural Heritage Preservation, Berlin, Germany, September 26-28, 2011, 131-139.

[8] Colla, C., Forde M.C., McCann, D., Das, P.C. Investigation of masonry arch bridges using non-contacting NDT, Proc. VI Int. Conf. Structural Faults and Repair-'95, Engineering Technics Press, Westminster Central Hall, London, 3-5 July, 1995, vol. 1, 235-239.

[9] Colla, C., Gruener, F., Gabrielli, E., Frick, J. Monitoring of salt content and mobility in masonry materials, Proc. of EWCHP-2011, European Workshop on Cultural Heritage Preservation, Berlin, Germany, September 26-28, 2011, 210-217.

[10] Colla, C., McCann, D., Forde, M.C. Radar testing of a masonry composite structure with sand and water backfill, ASCE Bridge Engineering J., vol. 6, (4), (2001), 262-270.

DOI: 10.1061/(asce)1084-0702(2001)6:4(262)

[11] Frick, J., Colla, C., Gabrielli, E., Gruener, F. Seasonal Monitoring of Salt Movement in Masonry Materials, Proc. of EWCHP 2012, 2nd European Workshop on Cultural Heritage Preservation, Kjeller, Norway, 24th -26th September, 2012, 27-34.

[12] Frick, J., Gabrielli, E., Colla, C., Gruener, F. Long-term Monitoring of Salt Movement in Masonry Materials, 9th International Masonry Conference, 7-9 July, 2014, Guimarães, Portugal (accepted).