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      Evaluación del desempeño térmico de ladrillos ecoamigables con incorporación de residuos de mullita Translated title: Evaluation of the thermal performance of eco-friendly bricks fabricated with incorporation of mullite residues

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          Abstract

          Resumen Se produjeron ladrillos de arcilla obtenidos con mezcla de arcilla con residuos de un horno eléctrico en desuso y reforzados con fibras cerámicas para la obtención de un material cerámico con características refractarias. Las mezclas de arcilla/partículas recicladas fueron 50:50 en peso, y la incorporación de fibra fue en un 10 y un 20 % en volumen, para obtener un cerámico por sinterización a 1.000 °C durante 2 h. Los materiales diseñados fueron caracterizados por difracción de rayos X, se determinó la resistencia a compresión, flexión, densidad, porosidad y absorción. También se comprobó su desempeño térmico por exposición directa a llama 1.000 °C. Los resultados mostraron que en la medida en que se incorpora fibra cerámica la resistencia a compresión disminuyó un 17,3 % para AF10 y un 17,0 % para AF20. Los valores de resistencia a flexión estuvieron en 3,4 MPa. El coeficiente de conductividad térmica fue de 0,5322 W/mK, y durante la exposición directa a la llama, las muestras lograron un gradiente térmico de -700 °C para muestras de 2 cm de espesor. Las fases mineralógicas obtenidas para los ladrillos fueron mullita, corindón y cordierita, las cuales se consideran refractarias.

          Translated abstract

          Abstract The aim of this research was the production of clay-brick, from red clay, waste from a disused electric furnace, reinforced with ceramic fibers, to obtain a ceramic material with refractory characteristics. The clay/waste particle proportion was 50:50 by weight, and the incorporation of fiber was 10% and 20% by volume, to obtain a ceramic by sintering at 1000°C, for 2 hours. The designed materials were characterized by X-ray diffraction, the flexural and compressive strength, density, porosity, and absorption were determined. The thermal performance was also verified by direct exposure to 1000°C flame. The results showed that as ceramic fiber was incorporated, the compressive strength decreased by 17.3% for AF10 and 17.0% for AF20. The flexural strength values were at 3.4 MPa. The coefficient of thermal conductivity was 0.5322 W/m.K, and, during direct flame exposure, the samples achieved a thermal gradient of ~ 700 °C for samples 2 cm thick. The mineralogical phases obtained for the bricks were mullite, corundum, and cordierite, which are considered refractory.

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          Most cited references29

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          The use of recycled paper processing residues in making porous brick with reduced thermal conductivity

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            Fired clay bricks manufactured by adding wastes as sustainable construction material – A review

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              Exploratory study on the effect of waste rice husk and sugarcane bagasse ashes in burnt clay bricks

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                Author and article information

                Journal
                inde
                Ingeniería y Desarrollo
                Ing. Desarro.
                Fundación Universidad del Norte (Barranquilla, Atlantico, Colombia )
                0122-3461
                2145-9371
                June 2021
                : 39
                : 1
                : 25-43
                Affiliations
                [6] orgnameUniversidad del Valle david.carvajal@ 123456correounivalle.edu.co
                [1] orgnameUniversidad del Valle monica.villaquiran@ 123456correounivalle.edu.co
                [2] orgnameUniversidad del Valle hernandez@ 123456correounivalle.edu.co
                [3] orgnameUniversidad del Valle kevin.agudelo@ 123456correounivalle.edu.co
                [4] orgnameUniversidad del Valle jonatan.arias@ 123456correounivalle.edu.co
                [5] orgnameUniversidad del Valle viera.maria@ 123456correounivalle.edu.co
                Article
                S0122-34612021000100025 S0122-3461(21)03900100025
                10.14482/inde.39.1.624.181
                b42de5a5-5ca9-4f0b-90c8-19572908bb87

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 25 January 2021
                : 15 July 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 29, Pages: 19
                Product

                SciELO Colombia

                Categories
                Artículo de investigación

                fibra cerámica,ladrillo ecológico,reciclaje,refractarios,ceramic fibre,clay,recycling,refractory.,arcilla,exposición a llama directa,direct flame exposure,eco-friendly bricks

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