Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sustainable application of rice husk and rice straw in cellular concrete composites
Highlights Biomass degradation generates bending strength loss and compressive strength gain. Rice husk and straw combination proved to be more advantageous than husk isolated. Sound absorption of cellular concrete increases with rice straw addition. Prior saturation of vegetable fibers were not efficient for mechanical performance.
Abstract This study seeks to evaluate the effect of incorporating rice husk and rice straw as a sealing material, and to evaluate the mechanical, acoustic, thermal, and durability properties of the cellular concrete that will be used. A sustainable use option for rice culture waste is provided and detailed in this paper. This study seeks to improve the thermoacoustic performance of cellular concrete using only rice husk by adding rice straw. The introduction of straw reduced the compressive strength by about 15% and increased the three-point bending strength. Sound absorption increased when adding rice straw, and the sound insulation values were statistically similar. With respect to the thermal analysis, the thermal conductivity was directly proportional to the straw length. In general, the best formulation was S-15%-3, which contained 15% rice straw at 3 cm. Specimens were submitted to wetting-and-drying cycles to evaluate durability, leading to increased compressive strength, which also increased with longer curing times. Furthermore, the cycles led to a reduction in the three-point bending strength while the thermal conductivity remained similar.
Sustainable application of rice husk and rice straw in cellular concrete composites
Highlights Biomass degradation generates bending strength loss and compressive strength gain. Rice husk and straw combination proved to be more advantageous than husk isolated. Sound absorption of cellular concrete increases with rice straw addition. Prior saturation of vegetable fibers were not efficient for mechanical performance.
Abstract This study seeks to evaluate the effect of incorporating rice husk and rice straw as a sealing material, and to evaluate the mechanical, acoustic, thermal, and durability properties of the cellular concrete that will be used. A sustainable use option for rice culture waste is provided and detailed in this paper. This study seeks to improve the thermoacoustic performance of cellular concrete using only rice husk by adding rice straw. The introduction of straw reduced the compressive strength by about 15% and increased the three-point bending strength. Sound absorption increased when adding rice straw, and the sound insulation values were statistically similar. With respect to the thermal analysis, the thermal conductivity was directly proportional to the straw length. In general, the best formulation was S-15%-3, which contained 15% rice straw at 3 cm. Specimens were submitted to wetting-and-drying cycles to evaluate durability, leading to increased compressive strength, which also increased with longer curing times. Furthermore, the cycles led to a reduction in the three-point bending strength while the thermal conductivity remained similar.
Sustainable application of rice husk and rice straw in cellular concrete composites
Pachla, Eduardo Cesar (Autor:in) / Silva, Débora Bretas (Autor:in) / Stein, Kassio Joe (Autor:in) / Marangon, Ederli (Autor:in) / Chong, Wang (Autor:in)
17.02.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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