AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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Authors: MARIA GOREA, LILIANA BIZO, ADRIANA TĂNASE.
The present study evaluates the characteristics and performances of plaster mortars for construction, with the addition of oxide waste resulted from the filling of metal statues. Several plaster mortars using 0 %, 5 %, 10 %, 15 % and 20 % wt. of waste in composition were prepared in the laboratory and the physical and mechanical characteristics were determined. The waste oxide composition is mainly formed of 61.26 % SiO2, 11.20 % Al2O3 and 23.50 % CaSO4. The consistency water is about 75 % for mortars without waste. With increasing the waste content in the mortar composition, the amount of water decreases at about 50 %. It was also determined the setting time for all plaster mortars without any setting time retarder. The initial setting time for the control mortar was 12 minutes and with increasing the waste percentage in the composition, the setting time increased proportionally, reaching 18 minutes for the sample with 20 % wt. waste. The flexural strength of 2.03 N/mm2 and compressive strength of 10.31 N/mm2 were obtained for the sample with the highest amount of waste (20 % wt.).
Keywords: oxide waste, plaster mortar, mechanical properties
