The study of composites made from residual organic materials and polymeric resins, has a great projection due to the use of new raw materials and the good physical, mechanical and aesthetic characteristics these materials present in the construction industry. The manufacturing processes of these composites include the necessary pressure application to generate an efficiently compact material, where matrix and reinforcement bonding are efficient. This study defines how the compaction force influences the flexural strength of composites made from polyester resin as polymer matrix, and rice husk as reinforcement material. This is achieved by testing different series of specimens, made by applying different compaction forces in a cold process, to analyse the relationship between compaction and flexural strength. Specimens are made varying only the compaction force, from 2, 5, 8, 11, 14, and 17 tons. The results show that, when the compaction force increases, the flexural strength in the composites also increases, however, there is a pressure range where the flexural strength values are very close, conditioning the use of pressure in relation to the decrease in the specimen section.
Estudio de los efectos de diferentes combinaciones de materiales repelentes de agua y fibras de piassaba (Aphandra natalia) en morteros de cemento. Study of the effects of different combinations of water-repellent agents and supplementary cementing materials on piassaba fibers (Aphandra natalia) in cement mortars.
El presente trabajo se enmarca en el ámbito de la Teoría y Crítica de la Arquitectura. Se fundamenta en el concepto de formas ilusorias de la arquitectura moderna desarrollado por el profesor Antón Capitel. Una ilusión arquitectónica evoca algo que no está presente físicamente pero que puede recordarnos formas que en algún momento despertaron en nosotros diversas sensaciones o emociones y que nos permite evaluar espacios u objetos con diversos matices. Se analiza la vida y obra del arquitecto Jorge Auquilla Ortega y la presencia de la ilusoria en uno de sus proyectos arquitectónicos construidos en relación con la arquitectura moderna de la segunda mitad del siglo XX. El análisis arquitectónico de la obra permitió identificar la ilusoria presente en ella, a través de figuras retóricas como metonimia, elipsis, prosopopeyas, metáforas, alegorías, y quiasmos.
Palabras clave: Ilusoria, arquitectura, estilo internacional, arquitectura moderna, Loja, Ecuador.
AbstractThe present work was framed in the field of Theory and Criticism of Architecture. It was based on the concept of illusory forms in modern architecture developed by Professor Antón Capitel. An architectural illusion evokes something that is not physically present but that can remind us of forms that at some point awakened in us different sensations or emotions and that allows us to evaluate spaces or objects with different nuances. The life and work of architect Jorge Auquilla Ortega and the presence of illusory in one of his architectural projectsbuilt in relation to the modern architecture of the second half of the twentieth century are analyzed. The architectural analysis of the work allowed us to identify the illusory present in it, through rhetorical figures such as metonymy, ellipsis, prosopopoeial, metaphors, allegories, and chiasms.
Keywords: Illusory, architecture, international style, modern architecture, Loja, Ecuador.
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