Salt Contamination of Wooden Materials: the Case of Trondheim (Norway) Warehouses

Abstract

Warehouses are big architectonical structures mostly made of spruce wood and utilized as storage buildings principally by food traders in Northern Countries. Trondheim’s warehouses currently observable along the river Nidelva, date back between the 17th and half of the 19th century were mostly used to stock and process fish. Therefore, where the food goods were stored, residuals are expected to be still present and/or to be responsible for the formation of alteration products on the wooden surfaces as well as inside the wooden structure. Here we propose a characterization of residual and neo-formed compounds inside and on the surface of wooden logs by means of vacuum microbalance that allowed both to individuate the type of salts, as well as, to estimate the maximum water film thickness adsorbed on the wooden samples at 93% of RH. These data have been related to variations in the acoustic emission (AE) intensity detected at the log surface and to the wood moisture content measured with capacitive and resistance operating moisture meters. The application of three independent techniques have allowed obtaining interestingly information indicating their potentiality as decay assessment techniques in the field of historical materials and specifically in the study of salts weathering on wood. The methodology allowed identifying a clear relationship between the amount of water in logs as a function of their distance from the ground and variations in the amplitude of the acoustic emission signals.

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References

[1] http://stiftelsenbryggen.no/verdensarven-bryggen/byggemate/ (accessed on 09/01/2020)

[2] Grytli, E. A journey along the norwegian coast: warehouses and historical wooden structures. Int. Holzbau Forum (2013) 19:1-11.

[3] Kirker, G., Glaeser, J. Salt damage to wood “fuzzy wood” often confused with fungal decay. Techline, Forest Products Laboratory (2011) Madison.

[4] Blanchette, R.A. (2003) Deterioration in historic and archaeological woods from terrestrial sites. In: R.J. Koestler et al. (Eds): Art, biology, and conservation: biodeterioration of works of art. The Metropolitan Museum of Art, New York, pp. 328-347.

[5] Blanchette, R.A., Held, B.W., Farrell, R.L. Defibration of wood in the expedition huts of Antarctica: an unusual deterioration process occurring in the polar environment. Polar Rec (2002) 38:313-322.

[6] Kim, D.W., Kim, C.W., Han, S.H., Chung, Y.J., Han, G.S. Flame retardant treatment’s effects and detection method on wooden buildings’ pigment layer. J. Korean Wood Sci. Technol. (2014) 42:393-406.

[7] Catelli, E., Bănică, F.G., Bănică, A. Salt efflorescence in historic wooden buildings. Herit Sci. (2016) 4:31-44.

[8] Madhoushi, M., Eimanian, J., Ansell, M.P. Non destructive and laboratory evaluation of strength of decayed wood members in a historic construction located in Gorgan (North of Iran). In: Structural analysis of historic construction: preserving safety and significance—proceedings of the 6th international conference on structural analysis of historic construction, SAHC08, Vol 1 (2008) pp. 469-472.

[9] Campos, .AF., de Macedo, L.B., de Castro, E., Silva Bortolucci, M.A.P., Lahr, F.A.R. Evaluation of health conditions of wooden structures of the former slave quarters of farm Santa Maria do Monjolinho, located in the state of São Paulo, Brazil. Adv. Mater. Res (2013) 778:1096-1101.

[10] Piotrowska, M., Otlewska, A., Rajkowska, K., Koziróg, A., Hachułka, M., Nowicka- Krawczyk, P., Wolski, G.J., Gutarowska, B., Kunicka-Styczyńska, A., Zydzik-Białek, A. Abiotic determinants of the historical buildings biodeterioration in the former Auschwitz II—Birkenau concentration and extermination camp. PLoS ONE (2014) 9: e109402-1-12.

[11] Jakiela, S., Bratasz, L., Kozlowski, R. Acoustic emission for tracing the evolution of damage in wooden objects. Stud. Conserv. (2007) 52:101-109.

[12] Strojecki, M., Łukomski, M., Krzemień, L., Sobczyk, J., Bratasz, Ł. Acoustic emission monitoring of an eighteenth-century wardrobe to support a strategy for indoor climate management. Stud. Conserv. (2014) 59:225-232.

[13] Le Conte, S., Vaiedelich, S., Thomas, J.H., Muliava, V., de Reyer, D., Maurin, E. Acoustic emission to detect xylophagous insects in wooden musical instrument. J. Cult. Herit. (2015) 16:338-343.

[14] Łukomski, M., Strojecki, M., Pretzel, B., Blades, N., Beltran, V.L., Freeman, A. Acoustic emission monitoring of micro-damage in wooden art objects to assess climate management strategies. Insight (2017) 59:256-265.

[15] Łukomski, M., Beltran, V., Boersma, F., Druzik, J., Freeman, A., Strojecki, M., Learner, T., Taylor, J. Monitoring acoustic emission in an epidemiological pilot study of a collection of wooden objects. Stud Conserv. (2018) 63:181-186.

[16] Carpinteri, A., Lacidogna, G. Damage evaluation of three masonry towers by acoustic emission. Eng. Struct. (2007) 29:1569–1579.

[17] Niccolini, G., Carpinteri, A., Lacidogna, G., Manuello, A. Acoustic emission monitoring of the syracuse athena temple: scale invariance in the timing of ruptures. Phys. Rev. Lett. (2011) 106:108503-1–108503-4.

[18] Niccolini, G., Manuello, A., Marchis, E., Carpinteri, A. Signal frequency distribution and natural-time analyses from acoustic emission monitoring of an arched structure in the Castle of Racconigi. Nat. Hazards Earth. Syst. Sci. (2017) 17:1025–1032.

[19] Kourkoulis, S.K. Recent advances in structural health monitoring of restored elements of marble monuments. Procedia Struct. Integr. (2018) 10:3-10.

[20] Carpinteri, A., Lacidogna, G., Niccolini, G. Acoustic emission monitoring of medieval towers considered as sensitive earthquake receptors. Nat. Hazards Earth Syst. Sci. (2007) 7:251-261.

[21] Carpinteri, A., Lacidogna, G., Invernizzi, S., Accornero, F. The sacred mountain of Varallo in Italy: seismic risk assessment by acoustic emission and structural numerical models. Sci. World. J. (2013) 170291-1–17029111

[22] Hsu, N., Simmons, J.A., Hardy, S. An approach to acoustic emission signal analysis—theory and experiment. Matls. Eval. (1977) 35:100-106-

[23] ASTM E976-15: 2015. Standard guide for determining the reproducibility of acoustic emission sensor response

[24] ASTM E2374-16: 2016. Standard guide for acoustic emission system performance verification.

[25] Bertolin, C., de Ferri, L., Grottesi, G., Strojecki, M. Study on the conservation state of wooden historical structures by means of acoustic attenuation and vacuum microbalance. Wood Sci. Technol. (2020) 54: 203-226.

[26] Camuffo, D., Bertolin C. Towards standardisation of Moisture Content measurement in Cultural Heritage Materials. e-Preservation Science (2012) 9:23-35.

[27] Bratasz, Ł., Kozlowski, R., Kozlowska, A., Rachwal, B. Analysis of water adsorption by wood using the Guggenheim–Anderson–de Boer equation. Eur. J. Wood Prod. (2012) 70: 445–451

[28] Arthur, M.A., Siccama, T.G., Yanai, R.D. Calcium and magnesium in wood of northern hardwood forest species: relation to site characteristics. Can. J. For. Res. (1999) 29:339-346.

[29] Li, D., Ou, J., Lan, C., Li, H. Monitoring and failure analysis of corroded bridge cables under fatigue loading using acoustic emission sensors. Sensors (2012) 12:3901-3915.

[30] Zhang, J., Yang, S., Hao, R., Gu, X. Amplitude attenuation laws of acoustic emission waves in plate structures. Tecnol, Ing. Mec. (2019) 94:67-74.

[31] Nadelman, E.I. Hydration and microstructural development of Portland limestone cement- based materials. Doctoral dissertation, Institute of Technology, (2016) Georgia.

[32] Schindler, A.K., Folliard. K.J. Heat of hydration models for cementitious materials. ACI Mater. J. (2005) 102:24-33.