Characterization and evaluation of rice husk ash and wood ash in sustainable clay matrix bricks
Felipe Sesé, Manuel Angel (UNIR)
López-Pérez, J A
Tipo de Ítem:Articulo Revista Indexada
This study analyzes the feasibility of using biomass combustion ash waste (rice husk or wood ash from boards) as secondary raw materials in the manufacture of clay bricks. The ash was characterized using particle size distribution analysis, chemical composition analysis by X-ray diffraction (XRD) and X-ray fluorescence (XRF), thermal analysis, elemental analysis, and scanning electron microscopy (SEM). Either rice husk ash or wood ash was used to replace different amounts (10-30 wt%) of clay in brick manufacture. Brick samples were formed by compression at 54.5 MPa and fired at temperatures of 900 or 1000 degrees C for 4 h, at a heating rate of 3 degrees C/min. The bricks' properties were compared to conventional products containing only clay and prepared following standard procedures. The bricks' technological properties depended on type and amount of ash used, and firing temperature. The results showed small variations due to firing temperature. Firing at 1000 degrees C achieved greater densification and thus lower water absorption and higher compressive strength firing at 900 degrees C produced higher porosity, which reduced compressive strength. Based on the results, 1000 degrees C was selected as the optimal firing temperature; and 10 wt% rice husk ash and 20 wt% wood ash as the optima amounts of biomass ash waste. Moreover, the bricks containing wood ash showed properties similar to the control bricks containing only clay and improved thermal conductivity. Finally, the bricks containing 10 wt% rice husk ash and 30 wt% wood ash fulfilled standard requirements for clay masonry units.
Este ítem aparece en la(s) siguiente(s) colección(es)
Mostrando ítems relacionados por Título, autor o materia.
Eliche-Quesada, D; Felipe Sesé, Manuel Angel (UNIR); Infantes-Molina, A (Advances in Materials Science and Engineering, 2016)This work evaluates the effect of incorporation of olive stone ash, as secondary raw material, on the properties of fired clay bricks. To this end, three compositions containing 10, 20, and 30 wt% olive stone ash in a ...
Martínez Sánchez, María Ángeles (UNIR); Herrera Gómez, Manuel; López-Gijón, J.; Herrera-Viedma, Enrique (Scientometrics, 03/2014)Citation classics identify those highly cited papers which are an important reference point in a research field. To identify a paper as a citation classic we have to fix a citation threshold value. Usually, this threshold ...
Rendimiento en matemáticas y actitud hacia la materia en centros inclusivos: estudio en la Comunidad de Madrid García García, Mercedes; Biencinto López, Chantal; Carpintero Molina, Elvira; Núñez del Río, Mª Cristina; Arteaga Martínez, Blanca (UNIR) (Revista de Investigación Educativa, 01/2013)Este artículo aborda el problema del bajo rendimiento en matemáticas desde la Teoría Adaptativa. Se parte del supuesto de que una escuela que valore la diversidad en las aulas planificará estrategias educativas adaptadas ...