Abstract
Relics are precious, but the use of improper restoration materials may intensify their deterioration and result in preservation damage. Five restoration materials, including polyvinyl acetate (PVAc), polyacrylic acid (PAA), silicone-modified acrylic (SMPA), gelatin, and Paroloid B72, were used to restore simulated samples of the Dunhuang grotto murals. Simulated samples were ranked by their durability in response to cyclic weathering experiments. Experimental results revealed two mechanisms in sample deterioration processes. First, preservation materials affect salt migration, which have caused considerable damage to relics. It is found that more hydrophilicity synthetic polymers showed better performance. Second, interlayer expansion discrepancies may cause diseases such as flaking, and for this reason, gelatin should not be applied to plaster layers.
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References
Agnew N, Demas M (2004) General principles. In: Principles for the conservation of heritage sites in China. The Getty Conservation Institute, pp 60, 63
Agnew N, Lin P-M, Zuixiong L, Xudong W (1999) A lightweight composite panel for the repair of cave roofs at the Mogao Grottoes China. Conserv Manag Archaeol Sites 3:135–144. https://doi.org/10.1179/135050399793138554
Brown KM, Ransom B (1996) Porosity corrections for smectite-rich sediments: impact on studies of compaction, fluid generation, and tectonic history. Geology 24:843–846. https://doi.org/10.1130/0091-7613(1996)024<0843:pcfsrs>2.3.co;2
Chen G, Su B, Zhao L, Yu Z, Li Z, Agnew N (2005) Wall painting disruption simulation experiments in cave 85 at the Mogao Grottoes (in Chinese) Dunhuang Research 62–66
Dai S, Shin H, Santamarina JC (2016) Formation and development of salt crusts on soil surfaces. Acta Geotech 11:1103–1109. https://doi.org/10.1007/s11440-015-0421-9
Fan Z, Chen G, Su B, Li Y, Qiao H, Tang W (2009) The testing study for repairing the disruption wall paintings in Cave 98 at Mogao Grottoes (in Chinese with English abstract) Dunhuang Research 4–7+120+125
Fan Z, Rickerby S, Shekede L, Qiao H, Tang W, Yang J (2008) The technique measurement for repairing the mural-paintings in Cave 85 at Mogao Grottoes (in Chinese with English abstract) Dunhuang Research 19–22+117-118+115
He X, Xu MG, Zhang H, Zhang BJ, Su BM (2014) An exploratory study of the deterioration mechanism of ancient wall-paintings based on thermal and moisture expansion property analysis. J Archaeol Sci 42:194–200. https://doi.org/10.1016/j.jas.2013.10.035
Hird R, Bolton MD (2016) Measurement of relative humidity to monitor salt migration in unsaturated porous media. Transp Porous Media 112:749–763. https://doi.org/10.1007/s11242-016-0675-1
Li GS, Wang WF, Qu JJ, Song MH (2013a) Study on temperature and humidity environment of grotto 72 at the Mogao Grottoes in Dunhuang, China. Int J Climatol 33:1863–1872. https://doi.org/10.1002/joc.3553
Li H, Wang W, Zhan H, Qiu F, Guo Q, Sun S, Zhang G (2017) The effects of atmospheric moisture on the mural paintings of the Mogao Grottoes. Stud Conserv 62:229–239. https://doi.org/10.1080/00393630.2016.1148916
Li J et al (2013b) Investigation of the renewed diseases on murals at Mogao Grottoes. Heritage Science 1:31
Li Z, Nishiura T (1988) Selecting experiments of consolidation materials of mural in Dunhuang (in Chinese) Dunhuang Research 60–63+116
Li ZX (2004) Sixty years on the conservation of the Dunhuang Grottoes (in Chinese with English abstract) Dunhuang Research 10–26+111
Ogura D, Hokoi S, Hase T, Okada K, Su B, Abuku M, Uno T (2013) Degradation of mural paintings in Mogao Cave 285 in Dunhuang Contributions to Building Physics 499–506
Piqué F, Wong L, Su B (2010) Methodology for the conservation of the wall paintings in cave 85. In: Agnew N (ed) Conservation of ancient sites on the silk road 2010. The Getty Conservation Institute, Los Angeles, pp 421–429
Saidov TA, Pel L, Kopinga K (2017) Sodium sulfate salt weathering of porous building materials studied by NMR. Mater Struct 50:11. https://doi.org/10.1617/s11527-017-1007-9
Su B (2010) Salting damages of dunhuang murals and regular maintenance. Dunhuang Research 14–16
Tsui N, Flatt RJ, Scherer GW (2003) Crystallization damage by sodium sulfate. J Cult Herit 4:109–115. https://doi.org/10.1016/S1296-2074(03)00022-0
Zehnder K (2007) Long-term monitoring of wall paintings affected by soluble salts. Environ Geol 52:395–409. https://doi.org/10.1007/s00254-006-0463-2
Zhang H-y, Yan G-s, Wang X-d (2012) Laboratory test on moisture adsorption-desorption of wall paintings at Mogao Grottoes, China. J Zhejiang Univ-Sci A 13:208–218. https://doi.org/10.1631/jzus.A1100204
Funding
This work was financially supported by the National Basic Research Program of China (Grant Number 2012CB720902) and the Conservation Science and Technology Project of Zhejiang Provincial Administration of Cultural Heritage (2016).
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He, X., Li, J., Tao, L. et al. Mechanisms of preservation damage: restoration materials affecting salt distribution and soil expansion in wall paintings of Dunhuang. Archaeol Anthropol Sci 11, 5171–5179 (2019). https://doi.org/10.1007/s12520-019-00864-x
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DOI: https://doi.org/10.1007/s12520-019-00864-x