National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Strengthening of historic lime plaster by dispersion of nanoparticles of calcium hydroxide in alcohol
Slížková, Zuzana ; Frankeová, Dita
Preservation procedure suggests the technology of strengthening of the historic lime plasters, which is based on a liquid lime reinforcing agent impregnation - dispersions of nanoparticles of calcium hydroxide. The principle is in the use of new lime consolidant which thanks to the optimal concentration of lime (10 to 25 g / l), the lime particle size from 50 to 250 nm and the absence of water allows effective, compatible and economical reinforcing treatment during a relatively short time (1-3 weeks) . Preservation procedure is suitable for strengthening of plasters that contain pores or cracks larger than 1 micron.
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Strengtheninig of whitish degraded porous limestone by suspension of nanoparticles of calcium hydroxide in alcohol
Slížková, Zuzana ; Frankeová, Dita
Limestone, which is damaged (degraded) in its surface layer, and having a suitable pore size, ie. that contain cracks or pores with a diameter greater than one micron, it is possible to consolidate by calcium hydroxide in the form of particles of a size of hundreds of nanometers. Suspension (also called dispersion, a colloidal sol) of nano-particles of calcium hydroxide in ethanol, may have different concentrations and can be applied to damaged limestone one or more times in various amounts, depending on its concentration and properties of the stone. The procedure specifies the limestone material tests carried out before the intervention and the possibility of minimizing whitish haze on the surface of the treated stone.
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Plný tet: 0448865_2015_Slizkova_Frankeova_Zpevneni_belaveho_degradovaneho_porezniho_vapence_suspenzi_nanocastic_hydroxidu_vapenateho_v_alkoholu_PP_4 - Download fulltextPDF

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