000002356 001__ 2356
000002356 005__ 20141118153435.0
000002356 04107 $$acze
000002356 046__ $$k2013-09-11
000002356 100__ $$aNogueira, Rita
000002356 24500 $$aStudy of some consolidation treatments for lime mortars

000002356 24630 $$n3.$$pProceedings of the 3rd Historic Mortars Conference HMC13
000002356 260__ $$bGlasgow : University of the West of Scotland, 2013
000002356 506__ $$arestricted
000002356 520__ $$2eng$$aIn the domain of heritage buildings conservation, interventions must be designed, whenever possible, to maintain existing materials instead of their replacement by new ones. The cohesion loss is a common problem of ancient mortars due to their characteristics (low mechanical resistance and high porosity) and to the exposure to deterioration agents. Re-establishment of mortars cohesion through consolidation treatments is an option to be explored, as similar treatments have been used for the same purpose in other materials with comparable properties and anomalies, such as stone. Furthermore, this option is consistent with the principle of preserving existing materials. Consolidation products penetrate in depth and form new substances within the contact areas of the material particles, re-establishing adhesion between them. Consolidation action causes improvement of cohesion and mechanical resistance increase of decayed material. Therefore, the assessment of its potential effectiveness should focus on changes in properties that might directly reflect the presence of a consolidation action and the strengthening capacity of the product. The in-depth consolidation is also an important parameter to be taken into account when assessing consolidation effectiveness and its importance is widely recognised and accepted. In the present work the consolidation action promoted by 4 products was studied: 2 inorganic products based on lime and 2 ethyl silicate based products. The consolidant treatments were applied on lime mortar specimens by direct contact capillary absorption. The consolidating effect was assessed through porosity, compressive and flexural strength, drilling resistance and ultrasonic pulse velocity tests and a joint analysis of the output data was performed in order to understand macro and micro-structural changes due to treatments.

000002356 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000002356 653__ $$alime water, lime nanoparticles, ethyl silicate, consolidation treatments, lime mortars

000002356 7112_ $$a3rd Historic Mortars Conference$$cGlasgow, Scotland (UK)$$d2013-09-11 / 2013-09-14$$gHMC13
000002356 720__ $$aNogueira, Rita$$iGomes, Augusto$$iPinto, Ana Paula Ferreira
000002356 8560_ $$ffischerc@itam.cas.cz
000002356 8564_ $$s304626$$uhttp://invenio.itam.cas.cz/record/2356/files/Nogueira - Study of some consolidation treatments for lime mortars.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000002356 962__ $$r2223
000002356 980__ $$aPAPER