Thermal and mechanical properties laboratory evaluation of hollow brick made of fired clay and rice husk additive
Artículo de revista
2020-12-05
Journal of Physics: Conference Series
Reino Unido
Hollow bricks in fired clay for masonry are important in design and construction of
buildings. Their thermal and mechanical properties must be considered because of the impact
they have on energy consumption. The objective of this research is to evaluate thermal and
mechanical properties of a new hollow brick, called Eco Design, made of fired clay and rice husk
additive, in order to identify the benefits of its use in the construction of masonry walls in regions
with a tropical climate. The methodology develops simulation of thermal properties of brick,
manufacturing at the laboratory level and characterization of mechanical properties of finished
product. Thermal validation simulates the behavior of heat transfer and fluxes of Eco Design in
mixtures of 100% fired clay, 95% -5%, 85% -15% and 70% -30% fired clay with rice husk,
respectively. Eco Design samples are manufactured by extrusion and fired at 1000 °C. The
characterization of mechanical properties of samples manufactured consists of determining
dimensions, water absorptive capacity, linear shrinkage, mass losses and mechanical resistance
to compression according to Colombian normative. The results indicate that Eco Design brick
has a thermal benefit of 6.9 °C in 95% -5% mixture, as the percentage of rice husk increases,
benefit increases 0.75 °C additional. Furthermore, the implementation of rice husk additive
improves 7.15% mechanical resistance to compression and increases 18.3% water absorption
capacity. Finally, the assessment of thermal and mechanical properties of Eco Design is a
reference to promote innovation in ceramic industry in Norte de Santander and Colombia.
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