INGEOSUR   20376
INSTITUTO GEOLOGICO DEL SUR
Unidad Ejecutora - UE
artículos
Título:
Final Disposal of Ashes from Sunflower Husk in
Autor/es:
LILIA SEÑAS; PRIANO CARLA; MARFIL SILVINA; MAIZA PEDRO; VALEA JUAN
Revista:
European Journal of Scientific Research.
Editorial:
EuroJournals Publishing, Inc
Referencias:
Año: 2012 vol. 74 p. 292 - 300
ISSN:
1450-216X
Resumen:
This paper presents the study of the behavior of cementitious mortars with
incorporated ashes produced during the incineration process of sunflower husk in boiler.
For ash characterization, the chemical composition of majority and minority elements was
determined by Inductively Coupled Plasma Mass Spectroscopy (ICP), the crystalline
structure by X-ray diffraction (XRD), and the optical properties by petrographic
microscopy. Two different groups of mortars were elaborated. In one of them fluidity of the
mixture was maintained constant throughout the study, and in the other, the w/c ratio.
Proportions of incorporated ashes were 5 %, 10 % and 15 % compared with the weight of
the cement used. As the rate of incorporated ashes increased, the fluidity of the mixture and
the setting time changed compared with those of the control mortar. The flexural strength
and the compressive strength were determined at the age of 7 and 28 days. Both parameters
decreased compared with those of the control as the percentage of incorporated ashes
increased. A petrographic study of thin sections of the mortars was conducted using a
petrographic microscope. No textural or compositional changes were observed at
microscopic level in the different mixtures studied.