The drying process is a step of ceramic brick production which requires the control of process variables to provide a final product with a porous uniform structure, reducing superficial and volumetric defects and production costs. Computational fluid dynamics (CFD) is an important tool in this process control, predicting the drying physical phenomenon and providing data that improve the industrial efficiency production. Furthermore, research involving CFD brick drying has neglected the effects of oven parameters, limiting the analysis only to the bricks. In this sense, the aim of this work is to numerically study the hot air-drying process of an industrial hollow ceramic brick in an oven at 70 °C. The results of the water mass and temperature distributions inside the brick, as well as moisture, temperature, velocity and pressure fields of the oven drying air at different process times are shown, analyzed and compared with experimental data, presenting a good agreement.
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http://dx.doi.org/10.3390/ma12101612 | DOI Listing |
Heliyon
October 2024
Department of Metallurgical and Materials Engineering, Universidade Federal do Rio de Janeiro - COPPE/UFRJ, Rio de Janeiro, RJ, Brazil.
The present work investigates the impact of particle size reduction of traditional ceramic materials as partial substitutes for Portland cement in mortars. Ceramic brick, ceramic tile, and stoneware were selected, with three particle sizes ( of 1, 5, and 15 μm) achieved through grinding operations adapted to each material grindability. The reactivity of ceramic powders was assessed via dissolution in saturated lime solution.
View Article and Find Full Text PDFEnviron Technol
October 2024
Postgraduate Program in Ecology and Natural Resources, Federal University of Ceara, Fortaleza, Brazil.
Two vertical flow constructed wetland (VFCW 1 and VFCW 2) with native macrophyte (Mart.) were operated. In VFCW 1, the substrates used were ceramic brick, washed sand, seashells (), and ceramic brick and sand in VFCW 2.
View Article and Find Full Text PDFMaterials (Basel)
September 2024
Department of Materials Science and Metallurgical Engineering, University of Oviedo, 33004 Oviedo, Spain.
The construction sector is presently among the most resource-intensive industries, driving a substantial body of research dedicated to the development of more sustainable materials to address these demands. A particularly promising approach within the framework of the circular economy is the repurposing of waste as a principal raw material for the creation of new construction products. Within this context, the primary aim of this study is to engineer ceramic materials for brick production using 100% waste-derived inputs, specifically aggregate washing sludge and manganese mining by-products.
View Article and Find Full Text PDFRadiat Prot Dosimetry
July 2024
Nuclear Radiation Management and Application Division, Defence Laboratory, Defence Research and Development Organization (DRDO), Jodhpur 342011, India.
Radiation dosimetry is an important task for assessing the biological damages created in human being due to ionising radiation exposure. Ionising radiation being invisible and beyond the perception of human natural sensors, the dosimetry equipments/systems are the utmost requirement for its measurement. Retrospective measurement of radiation doses is a challenging task as conventional radiation dosemeters are not available at the exposure site.
View Article and Find Full Text PDFMaterials (Basel)
June 2024
Faculty of Civil Engineering, Technical University of Cluj-Napoca, 15, Constantin Daicoviciu Str., 400020 Cluj-Napoca, Romania.
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