
handle: 10495/13341
RESUMEN: Teniendo en cuenta que la industria ladrillera está clasificada por aspectos técnicos y económicos, fueron seleccionadas dos muestras de residuos cerámicos de ladrillo de la industria tecnificada y dos de la industria artesanal, a fin de evaluar sus fases cristalinas mediante DRX (Difracción de rayos X) y propiedades físicas por medio de análisis granulométricos, determinación de densidad, absorción de agua, masas unitarias, forma y perdidas por calcinación, basados en las normas técnicas colombianas, para brindar una ruta de aprovechamiento a estos residuos, mediante su aplicabilidad como agregados gruesos en la fabricación de concreto. Posteriormente, fue seleccionada una sola muestra de agregado reciclado, que correspondió a una industria tecnificada, la cual exhibió mejores propiedades para el diseño de una mezcla de concreto, variando su proporción al 5%,10% y 20% en peso de agregado grueso natural por agregado reciclado, y así establecer sus propiedades mecánicas, tales como la resistencia a compresión y la resistencia a flexión con respecto a una mezcla patrón cuya totalidad de agregados son naturales. Considerando esto, también fueron evaluadas, la morfología de las superficies de fractura mediante caracterización SEM (Microscopia electrónica de barrido), colorimetría y propiedades físicas del concreto en estado endurecido. Los resultados de los ensayos, indican que es viable utilizar triturado de ladrillo reciclado como agregado grueso en la elaboración de concreto, siempre y cuando este no supere el 20% en peso del agregado grueso natural.
ABSTRACT: Taking into account that the brick industry is classified by technical and economic aspects, two samples of brick ceramic waste from the technical industry and two from the artisanal industry were selected in order to evaluate their crystalline phases by means of XRD (X-ray Diffraction) and physical properties by means of granulometric analysis, determination of density, water absorption, unit masses, shape and losses by calcination, based on colombian technical standards, to provide a route of use to these residues, through their applicability as coarse aggregates in the manufacture of concrete. Subsequently, a single sample of recycled aggregate was selected, which corresponded to a technified industry, which exhibited better properties for the design of a concrete mix, varying its proportion to 5%, 10% and 20% in weight of natural coarse aggregate by recycled aggregate, and thus establish its mechanical properties, such as compressive strength and flexural strength with respect to a standard mixture whose totality of aggregates are natural. Considering this, the morphology of the fracture surfaces was also evaluated by SEM characterization (Scanning Electron Microscopy), colorimetry and physical properties of the hardened concrete. The results of the tests indicate that it is feasible to use shredded recycled brick as a coarse aggregate in the manufacture of concrete, as long as it does not exceed 20% by weight of the natural coarse aggregate.
Agregados gruesos, Chamote, Agregados reciclados, Concreto, Resistencia nominal
Agregados gruesos, Chamote, Agregados reciclados, Concreto, Resistencia nominal
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