FRSN - Ciencia y Tecnologia - GEA

Permanent URI for this collectionhttp://48.217.138.120/handle/20.500.12272/911

Browse

Author: search.filters.author.Cristóbal, Adrián AlbertoEnd date: 2024

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Ceramic bricks using pistachio shells as controlled porosity former
    (University Amar Telidji - Laghouat, 2023-03-27) Quaranta, Nancy Esther; Caligaris, Marta Graciela; Unsen, Miguel Angel; López, Hugo Arbelio; Pelozo, Gisela Guadalupe; Cristóbal, Adrián Alberto
    The present work studies the use of pistachio shells as a porosity-forming raw material in the manufacture of ceramic bricks. It focuses on the characteristics of the ceramic pieces obtained with different residual biomass contents (from 5 to 20% by volume). The specimens were shaped by uniaxial pressure of 25 MPa, and then were treated at 950°C for 3h. Based on the results obtained it is possible to conclude that the use of this residual biomass, as a pore former in the ceramic industry is feasible. The proportion of added biomass that generates the best characteristics and properties in the final product is 10%. Up to this percentage of aggregate, ceramic pieces with very good macroscopic and microscopic characteristics are obtained, with porosity and flexural strength values that meet market requirements for this type of product. Optical microscopy technique has been used to carry out a detailed analysis of the shape and size of the formed pores, which is a specific objective of this work. It has been observed that for contents of 5 and 10% biomass, the shape of pores is similar to the shape of the particles of added pistachio shells, while for higher contents (15 and 20%) it is different with elongated characteristics. In relation with the size of the pores, at lower contents is around 60% of the original particles size, and for the higher percentages of biomass, they are larger, indicating that agglomerates of particles are formed and when combusted, produce that porosity characteristics.
  • Thumbnail Image
    Item
    Uso de marlo de maíz como generador de porosidad controlada en cerámicos
    (Universidad Tecnológica Nacional, 2023-02-22) Quaranta, Nancy Esther; Varoli, Romina Soledad; Caligaris, Marta Graciela; Cristóbal, Adrián Alberto
    El objetivo de este trabajo es analizar la utilización de marlos de maíz, como material formador de poros en la fabricación de materiales cerámicos alivianados. Las materias primas, marlo molido y arcilla, fueron exhaustivamente caracterizadas. Los productos cerámicos estudiados se fabricaron a partir de arcilla comercial con el agregado de 5%, 10% y 15% en volumen de marlos, y una muestra sin biomasa adicionada a modo de referencia. Todas las mezclas con 8% de humedad se conformaron a 25MPa. Posteriormente se cocinaron a 950°C durante 3 horas. Los resultados obtenidos reflejan una alta factibilidad de utilización de esta biomasa para el uso estudiado. Los ladrillos cerámicos obtenidos poseen buenas características generales, con propiedades mecánicas que cumplen con los requerimientos del mercado. Además, se observó que la porosidad obtenida se relaciona con el tamaño y forma de las partículas de la biomasa utilizada, así como con la proporción agregada.