000002232 001__ 2232
000002232 005__ 20141118153437.0
000002232 04107 $$acze
000002232 046__ $$k2013-09-11
000002232 100__ $$aBorsoi, G.
000002232 24500 $$aEffect of nanostructured lime-based and silica-based products on the consolidation of historical renders

000002232 24630 $$n3.$$pProceedings of the 3rd Historic Mortars Conference HMC13
000002232 260__ $$bGlasgow : University of the West of Scotland, 2013
000002232 506__ $$arestricted
000002232 520__ $$2eng$$aAn important operation for the conservation of historical renders is the cohesion restitution of the binderaggregate system, based on the use of materials with consolidating properties. Inorganic consolidants are usually preferred to organic ones due to better compatibility and durability. The aim of this work is the experimental characterization of two nanostructured consolidant products; a commercial nanolime, optimized with the addition of a reduced concentration of ethyl silicate, and a commercial nanosilica product underwent experiments to verify their consolidation efficiency. Nanostructured lime-based and silica-based products present interesting properties such as homogeneous distribution and high stability. Nanolimes were applied in combined applications with ethyl silicate, a well-known compatible product for consolidation intervention. The combined application guarantees some benefits and improves the mechanical and microstructural performance of these products. A nanosilica product was tested to better understand some known disadvantages (e.g. reduced penetration depth) and so its performances. Consolidant products were applied on weak lime mortar samples (prismatic samples and single mortar layer applied on bricks); these mortars were optimized by studying different binder-aggregate ratios, to simulate old lime mortar with cohesion loss. Consolidation effects were periodically evaluated to understand the treatments efficacy. Physical-mechanical characterization was performed on treated mortar samples, analysing superficial hardness and compressive and flexural strength. Microstructural observations and X-ray microanalyses of the consolidation products and of the consolidated mortar samples are also reported.

000002232 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000002232 653__ $$aConsolidation products, Nanolime, Nano-silica, Historical renders

000002232 7112_ $$a3rd Historic Mortars Conference$$cGlasgow, Scotland (UK)$$d2013-09-11 / 2013-09-14$$gHMC13
000002232 720__ $$aBorsoi, G.$$iSilva, A. Santos$$iVeiga, R.
000002232 8560_ $$ffischerc@itam.cas.cz
000002232 8564_ $$s395859$$uhttp://invenio.itam.cas.cz/record/2232/files/Borsoi - Effect of nanostructured lime-based and silica-based products on the consolidation of historical renders.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000002232 962__ $$r2223
000002232 980__ $$aPAPER