European Journal of Wood and Wood Products

, Volume 76, Issue 3, pp 965–971 | Cite as

Strengthening of archaeological wood using electroosmosis

  • Xiwen Zhang
  • Zhengfeng Huang
  • Sancai Xi
  • Guoping Sun
Original
  • 52 Downloads

Abstract

Hundreds of waterlogged archaeological wooden pillars were discovered during the 2004 excavation of an archaeological site in Tianluo-Mountain, Zhejiang Province, China. These archaeological wooden pillars are invaluable cultural relics but are on the verge of decay and cracking due to the combination of a humid environment and bacterial surface erosion. Inspired by the stable silicified wood in the natural world, it was decided to silicify these fragile wooden pillars in situ to protect them. Wood was first treated in sodium silicate solution using electroosmosis technology, and then CaSiO3 precipitations were formed by immersing silicified wood in calcium nitrate solution to fix silicate in the wood. The wood microstructure before and after treatment was observed using scanning electron microscopy. It could be seen that particles were widely distributed throughout the internal part after treatment, while there were no particles present before treatment. EDS results showed that the particles are comprised mainly of silicon, calcium and oxygen, so it could be confirmed that calcium silicate was formed in the wood. Mechanical property tests indicated that the silicification process improved the axial compressive strength by 143%. Thus, archaeological wood has successfully silicified and the objective of strengthening has been achieved.

Notes

Acknowledgements

This work was supported by the 2013 research project from Cultural Relics Bureau of Zhejiang Province: Research of Protecting Tianluo-Mointain soil mass and wooden structure construction in humid environment.

References

  1. Almkvist G, Persson I (2008) Fenton-induced degradation of polyethylene glycol and oak holocellulose. A model experiment in comparison to changes observed in conserved waterlogged wood. Holzforschung 62:704–708Google Scholar
  2. Babiński L, Izdebska-Mucha D, Waliszewska B (2014) Evaluation of the state of preservation of waterlogged archaeological wood based on its physical properties: basic density vs. wood substance density. J Archaeolog Sci 46:372–383Google Scholar
  3. Bjurhager I, Ljungdahl J, Wallstrom L, Gamstedt E, Berglund L (2010) Towards improved understanding of PEG-impregnated waterlogged archaeological wood: a model study on recent oak. Holzforschung. 64(2):243–250CrossRefGoogle Scholar
  4. Chien S, Ou C, Lee Y (2010) A novel electroosmotic chemical treatment technique for soil improvement. Appl Clay Sci 50(4):481–492CrossRefGoogle Scholar
  5. Dietrich D, Lampke T, Rößler R (2013) A microstructure study on silicified wood from the Permian petrified forest of Chemnitz. Paläontol Z 87(3):397–407CrossRefGoogle Scholar
  6. Fan L, Gui Y, Zheng Y, Wang Y, Cai D, You X (2011) Ancient DNA sequences of rice from the low Yangtze reveal significant genotypic divergence. Chin Sci Bull 56(28–29):3108–3113CrossRefGoogle Scholar
  7. Furuno T, Imamura Y (1998) Combinations of wood and silicate Part 6. Biological resistances of wood-mineral composites using water glass-boron compound system. Wood Sci Technol 32(3):161–170CrossRefGoogle Scholar
  8. Furuno T, Uehara T, Jodai S (1991) Combination of wood and silicate. 1. Impregnation by water glass and applications of aluminum sulfate and calcium-chloride as reactants. Mokuzai Gakkaishi 37(5):462–472Google Scholar
  9. Furuno T, Shimada K, Uehara T, Jodai S (1992) Combinations of wood and silicate. 2. Wood-mineral composites using water glass and reactants of barium-chloride, boric-acid, and borax, and their properties. Mokuzai Gakkaishi 38(5):448–457Google Scholar
  10. Gherardi Hein P, Tarcísio Lima J (2012) Relationships between microfibril angle, modulus of elasticity and compressive strength in Eucalyptus wood. Maderas Cienc Tecnol 14(3):267–274Google Scholar
  11. Gotze J, Mockel R, Langhof N, Hengst M, Klinger M (2008) Silicification of wood in the laboratory. Ceram Silik 52(4):268–277Google Scholar
  12. Jeremic D, Cooper P (2008) PEG quantification and examination of molecular weight distribution in wood cell walls. Wood Sci Technol 43(3–4):317–329Google Scholar
  13. Jiao T, Guo Z, Sun G, Zhang M, Li X (2011) Sourcing the interaction networks in Neolithic coastal China: a geochemical study of the Tianluoshan stone adzes. J Archaeol Sci 38(6):1360–1370CrossRefGoogle Scholar
  14. Kim K, Yoon C, Kim P, Lee M, Lim J (2009) Fine structure and X-ray microanalysis of silicified woods from a tertiary basin Pohang, Korea by scanning electron microscopy. Micron 40(5–6):519–525Google Scholar
  15. Kloiber M, Drdácký M, Tippner J, Hrivnák J (2014) Conventional compressive strength parallel to the grain and mechanical resistance of wood against pin penetration and microdrilling established by in-situ semidestructive devices. Mater Struct 48(10):3217–3229CrossRefGoogle Scholar
  16. Li M, Mo D, Mao L, Sun G, Zhou K (2010) Paleosalinity in the Tianluoshan site and the correlation between the Hemudu culture and its environmental background. J Geogr Sci 20(3):441–54CrossRefGoogle Scholar
  17. Lu Y, Feng M, Zhan H (2014) Preparation of SiO2–wood composites by an ultrasonic-assisted sol–gel technique. Cellulose 21(6):4393–4403CrossRefGoogle Scholar
  18. Nakajima T, Nakajima M, Mizuno T, Sun G, He S, Liu H (2012) On the pharyngeal tooth remains of crucian and common carp from the neolithic Tianluoshan site, Zhejiang Province, China, with remarks on the relationship between freshwater fishing and rice cultivation in the Neolithic Age. Int J Osteoarchaeol 22(3):294–304CrossRefGoogle Scholar
  19. Ogiso K, Saka S (1994) Wood-inorganic composites prepared by sol–gel process chemical-bonds between wood and inorganic substances enhancement. Mokuzai Gakkaishi 40(10):1100–1106Google Scholar
  20. Ou C, Chien S, Wang Y (2009) On the enhancement of electroosmotic soil improvement by the injection of saline solutions. Appl Clay Sci 44(1–2):130–136CrossRefGoogle Scholar
  21. Ou C, Chien S, Lee T (2013) Development of a suitable operation procedure for electroosmotic chemical soil improvement. J Geotech Geoenviron Eng 139(6):993–1000CrossRefGoogle Scholar
  22. Ou C, Chien S, Yang C, Chen C (2015) Mechanism of soil cementation by electroosmotic chemical treatment. Appl Clay Sci 104:135–142Google Scholar
  23. Peng J, Xiong X, Mahfouz A, Song E (2013) Vacuum preloading combined electroosmotic strengthening of ultra-soft soil. J Cent South Univ 20(11):3282–3295CrossRefGoogle Scholar
  24. Pinto J, Chahud E, Cimini C (2014) Evaluation of compressive strength for the wood Eucalyptus grandis using ultrasonic wave propagation. Eur J Wood Prod 73(1):127–129CrossRefGoogle Scholar
  25. Rafiemanzelat F, Fathollahi Zonouz A, Emtiazi G (2013) Synthesis of new poly(ether-urethane-urea)s based on amino acid cyclopeptide and PEG: study of their environmental degradation. Amino Acids 44(2):449–459CrossRefPubMedGoogle Scholar
  26. Rakotonirainy M, Caillat L, Héraud C, Memet J, Tran Q (2007) Effective biocide to prevent microbiological contamination during PEG impregnation of wet archaeological iron–wood artefacts. J Cult Heritage 8(2):160–169CrossRefGoogle Scholar
  27. Saka S, Miyafuji H, Tanno F (2001) Wood–inorganic composites prepared by the sol–gel process. J Sol Gel Sci Technol 20(2):213–215Google Scholar
  28. Wang N, Cai C, Cai D, Cheng J, Li S, Wu Z (2012) Hydrothermal fabrication of hydroxyapatite on the PEG-grafted surface of wood from Chinese Glossy Privet. Appl Surf Sci 259:643–649CrossRefGoogle Scholar
  29. Wong Y, Yuan S, Choong C (2011) Degradation of PEG and non-PEG alginate–chitosan microcapsules in different pH environments. Polym Degrad Stab 96(12):2189–2197CrossRefGoogle Scholar
  30. Wu L, Zhu C, Zheng C, Ma C, Wang X, Li F, Li B, Li K (2014) Impact of Holocene climate change on the prehistoric cultures of Zhejiang region, East China. J Geogr Sci 24(4):669–688CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Xiwen Zhang
    • 1
  • Zhengfeng Huang
    • 1
  • Sancai Xi
    • 2
  • Guoping Sun
    • 3
  1. 1.School of Materials Science and EngineeringZhejiang UniversityHangzhouChina
  2. 2.Research Institute of Cultural HeritageZhejiang UniversityHangzhouChina
  3. 3.Zhejiang Provincial Cultural Relics Archaeological Research InstituteHangzhouChina

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