Further to a recent exploratory investigation on the possible use of cheap, commercially available, synthetic zeolites as pozzolanic addition to portland cement, the present study aims at characterizing a commercial zeolite Na-A-rich material, as possible component of hydraulic lime mortars. In order to evaluate the action played by the zeolite in developing hydraulicity and mechanical properties, three mortars with different lime-to-zeolite ratio were prepared and characterized in terms of compositional features and mechanical and physical properties. Thermogravimetric analysis was used as a tool to evaluate the pozzolanic activity of the zeolitic material utilized. The main results obtained are: (a) zeolite addition gives rise to a clear benefit on compressive strengths of the hardened mortars; (b) hardening is rapid, as more than 60% of the final compressive strengths is developed after only 7 days; (c) lime/zeolite ratio does not affect to a great extent both porosity and water absorption of the manufactured mortars; (d) mortars containing equal amounts of lime and zeolite show the best performances, either from a compositional point of view (absence of unreacted zeolite) or for mechanical and porosimetric properties. Performances are better than or comparable to those of an analogous, non-zeolitic, commercial mortar.

LTA zeolite as pozzolanic addition for hydraulic mortars: An effective, promising use / Liguori, Barbara; Iucolano, Fabio; Caputo, Domenico; Colella, Carmine. - In: ADVANCED POROUS MATERIALS. - ISSN 2327-3941. - 1:(2013), pp. 129-135. [10.1166/apm.2013.1007]

LTA zeolite as pozzolanic addition for hydraulic mortars: An effective, promising use

LIGUORI, BARBARA;IUCOLANO, FABIO;CAPUTO, DOMENICO;COLELLA, CARMINE
2013

Abstract

Further to a recent exploratory investigation on the possible use of cheap, commercially available, synthetic zeolites as pozzolanic addition to portland cement, the present study aims at characterizing a commercial zeolite Na-A-rich material, as possible component of hydraulic lime mortars. In order to evaluate the action played by the zeolite in developing hydraulicity and mechanical properties, three mortars with different lime-to-zeolite ratio were prepared and characterized in terms of compositional features and mechanical and physical properties. Thermogravimetric analysis was used as a tool to evaluate the pozzolanic activity of the zeolitic material utilized. The main results obtained are: (a) zeolite addition gives rise to a clear benefit on compressive strengths of the hardened mortars; (b) hardening is rapid, as more than 60% of the final compressive strengths is developed after only 7 days; (c) lime/zeolite ratio does not affect to a great extent both porosity and water absorption of the manufactured mortars; (d) mortars containing equal amounts of lime and zeolite show the best performances, either from a compositional point of view (absence of unreacted zeolite) or for mechanical and porosimetric properties. Performances are better than or comparable to those of an analogous, non-zeolitic, commercial mortar.
2013
LTA zeolite as pozzolanic addition for hydraulic mortars: An effective, promising use / Liguori, Barbara; Iucolano, Fabio; Caputo, Domenico; Colella, Carmine. - In: ADVANCED POROUS MATERIALS. - ISSN 2327-3941. - 1:(2013), pp. 129-135. [10.1166/apm.2013.1007]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/543096
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