In-situ growth synthesis of nanolime/kaolin nanocomposite for strongly consolidating highly porous dinosaur fossil
Construction and Building Materials, ISSN: 0950-0618, Vol: 300, Page: 124312
2021
- 16Citations
- 10Captures
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Article Description
Due to the excellent compatibility and ageing-resistant performance, nanolime (NL) as a promising inorganic material is applied to consolidate aged sandstones and other arenaceous rocks based cultural heritage, such as wall paintings and stone relics. However, sometimes, NL does not assure a good consolidation strength for cultural relics. The existing researches on enhancing its consolidation strength are costly, time-consuming or still involving organic polymers. Here, utilizing inexpensive kaolin nanosheets as platform, we design and facilely synthesize a new nanolime/kaolin (N-K) nanocomposite by in-situ growth of Ca(OH) 2 nanoparticles on the surface of kaolin nanosheets. The kinetic stability of this nanocomposite is comparable to the NL. Application experiment shows that the consolidation strength of the N-K nanocomposite in the highly porous pterosaur fossil (65%, porosity) is stronger than that of NL. The reason is due to the incorporation of kaolin nanosheets into the CaCO 3 network after carbonation. For the first time, this work reports a new N-K inorganic nanocomposite and will facilitate the development of NL-based inorganic materials for the conservation of cultural heritage.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0950061821020717; http://dx.doi.org/10.1016/j.conbuildmat.2021.124312; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85111305970&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0950061821020717; https://dx.doi.org/10.1016/j.conbuildmat.2021.124312
Elsevier BV
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