VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Influence of methyl cellulose in injection grout on mould growth on mural paintings – preliminary results
    Padovnik, Andreja, 1983- ...
    Commercially non-structural injection grouts often contain cellulose ether as an additive, mainly to modify the viscosity and stability of the grout. Nevertheless, in our previous field studies we ... observed mould growth after injection of commercial grout that contained methyl cellulose (MC) as an additive. Therefore, our objective was to determine the effect of MC on mould development after grouting of painted plaster layers. For this purpose, a painted panel sandwich model, simulating delaminated plaster layers, was inoculated with fungal strains isolated from various cultural heritage sites. After incubation (27 days), mould growth was assessed using Calcofluor white fluorescent staining. Our preliminary results show that during the incubation the moisture content on the surface of the dry part of the model increased steadily due to the high humidity in the chamber and the absorption capabilities of the porous plaster. Moreover, grouting increased the moisture content on the surface of the paint layer by ~10%. As a result, fungal stains EXF-15333 and EXF-15047 grew exclusively on the dry injected part of the surface (growth of 30%) and no growth was observed on the dry non-injected part. Alarmingly, when the mortar was removed, it was revealed that the injected grout in the air pockets had not cured after 27 days.
    Vir: Conservation and restoration of historic mortars and masonry structures : HMC 2022 (Str. 608 - 620)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2023
    Jezik - angleški
    COBISS.SI-ID - 155790339

    Povezava(-e):

    https://link.springer.com/chapter/10.1007/978-3-031-31472-8_48
    DOI

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