000002364 001__ 2364
000002364 005__ 20141118153435.0
000002364 04107 $$acze
000002364 046__ $$k2013-09-11
000002364 100__ $$aSerpa, F. B.
000002364 24500 $$aEffects of accelerated maturation in repair dolomitic lime based mortars

000002364 24630 $$n3.$$pProceedings of the 3rd Historic Mortars Conference HMC13
000002364 260__ $$bGlasgow : University of the West of Scotland, 2013
000002364 506__ $$arestricted
000002364 520__ $$2eng$$aAging of lime putty improves the quality of hydrated lime due to changes in portlandite microstructure as regards the morphology and particle size. Improvements in mortar properties such as: workability, plasticity, water retention and mechanical resistance, are achieved in lime based mortars. The accelerated maturation technique is to increase the traditional process temperature to 60 ° C (constant), so that the improvements mentioned above are achieved in a shorter period of time. Thus, from the control of the microstructure of dolomitic lime through accelerated maturation, this study evaluates these effects when this material is used in restoration mortars. Two types of dolomitic lime are tested: dry hydrate, and slaked lime putty, the recommended material for restoration interventions. The limes were aged in temperature of 60 ° C for 14 days. Tests were conducted in non-aged lime mortars for comparison. Tests and analysis are performed using Powder X-ray diffractometry (XRD), followed by mechanical characterization according to Brazilian standards. XRD analysis shows an increase in intensity and narrowing of portlandite diffraction peaks in both aged limes, especially in accelerated ). Furthermore, a stronger increase on mortars plasticity is obtained with limes matured at 60 ° C than that observed in those matured at room temperature. This process seems to improve the mechanical characteristics of the mortar. Thus, the use of aged dolomitic lime putty appears as a possibility in the field of restoration of historical buildings.

000002364 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000002364 653__ $$adolomitic lime, maturation, microstructure, repair mortars

000002364 7112_ $$a3rd Historic Mortars Conference$$cGlasgow, Scotland (UK)$$d2013-09-11 / 2013-09-14$$gHMC13
000002364 720__ $$aSerpa, F. B.$$iGleize, P. J. P.
000002364 8560_ $$ffischerc@itam.cas.cz
000002364 8564_ $$s289483$$uhttp://invenio.itam.cas.cz/record/2364/files/Serpa - Effects of accelerated maturation in repair dolomitic lime based mortars.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000002364 962__ $$r2223
000002364 980__ $$aPAPER