Fired clay bricks made by adding wastes: Assessment of the impact on physical, mechanical and thermal properties

The use of bagasse in the preparation of fireclay insulating bricks

“…The manufacture of fireclay insulating refractory bricks relies on the creation of large pore volumes inside the brick matrix . To that aim, a multitude of materials are added to the raw mix usually consisting of calcined kaolin and plastic clay as binder . Most insulating firebricks producers currently use petrochemical lightweight additives such as polypropylene, polystyrene (PS), and polyethylene.…”

Valorisation of GRP Dust Waste in Fired Clay Bricks

“…Fired clay bricks (FCBs) are one of the most produced construction materials [6]. Every year, approximately 1500 billion bricks are manufactured worldwide, involving more than 4000 million tons of clay extracted to be processed by more than 100,000 kilns [7].…”

“…Results have shown that the addition of organic residues always reduces compressive strength, bulk density, and thermal conductivity but increases the water absorption of bricks. On the contrary, inorganic residues a ect these properties depending on their compositions, since metals and minerals introduced by these additions react and melt with the clay minerals in very different ways [6,26].…”

“…Normally, the thermal treatment is divided into three phases: heating, ring, and cooling [6]. In the literature, several ring processes have been proposed: Karaman et al [36] red bricks from 750°C to 1050°C for 8 hours; Mohammed et al [37] compared performances of bricks containing organic and inorganic waste red at three different temperatures (800, 900, and 1000°C) for about 4 hours; Dondi et al [23] investigated bricks manufactured with glassy wastes at ring temperatures of 900, 950, and 1000°C always for 4 hours.…”

Agregados leves de cerâmica vermelha com incorporação de cinza do bagaço de cana-de-açúcar sinterizados em forno de micro-ondas

“…No Brasil, se destaca a oferta de CBCA, pois é o maior produtor mundial de cana-deaçúcar, com produção de 641 milhões de toneladas na safra 2017/2018, o que corresponde a cerca de quatro milhões de toneladas de CBCA na cogeração de energia em caldeiras (ÚNICA, 2019). Vários estudos mostraram que as CBCA apresentam potencial de utilização na cerâmica vermelha, com potencial de redução da massa específica da cerâmica, o que torna esse material adequado para produção de agregados leves (BALAKRISHNAN;BATRA, 2011;BORLINI et al, 2006;HOLANDA 2013HOLANDA , 2012GURGEL, HOLANDA, 2012aKAZMI et al, 2016;MUÑOZ et al, 2016;SOUZA et al, 2011;TEIXEIRA et al, 2008;TORRES et al, 2009). Durante o processo de sinterização da cerâmica ocorre a volatização do material orgânico presente na CBCA (em torno de 80% da cinza), com a geração de gases que aumenta a porosidade do material, diminuído sua massa específica HOLANDA, 2013;GUPTA, 2016;ZOREL;LANDO, 2017;RODRIGUES et al, 2016;SOUZA et al, 2011;VIRUTHAGIRI et al, 2015).…”