calcium sulfate whisker reinforced non-fired ceramic tiles prepared from phosphogypsum

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ID: 211535
2018
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Abstract
Phosphogypsum (PG), an industrial by-product from the manufacture of phosphoric acid, can be processed into non-fired ceramic tiles by an intermittent pressing hydration process. In order to promote the practical application of the technology, calcium sulfate whisker (CSW) was used as reinforcing agent to increase the mechanical strength of PG tiles in this research. The bending strength of the resulted PG tiles with 1 wt.% CSW reached 27.2 MPa, a resulting increase of 80% compared to the specimen without CSW. The reinforcement of the mechanical strength is mainly attributed to the fact that, the dispersed CSW in the tile body act as “bridges” and strongly bond with gypsum crystals, thus forming a complete tighter-linked tile network. Resumen: Los fosfoyesos (PG), un residuo industrial obtenido en la fabricación de ácido fosfórico, pueden ser reutilizados en forma de baldosas cerámicas crudas, sin necesidad de una etapa de cocción, mediante un proceso intermitente de prensado e hidratación. Para poder llevar a cabo una aplicación práctica de esta tecnología, en este trabajo se propone utilizar sulfato cálcico en forma de fibras (CSW, por sus siglas en inglés) como agente de refuerzo, para incrementar la resistencia mecánica de las baldosas finalmente obtenidas. Con la adición de un 1% (en peso) de CSW se incrementó la resistencia mecánica a la flexión de las baldosas hasta un valor de 27,2 MPa, lo que representa una mejora del 80% con respecto a las baldosas de PG obtenidas sin adición de CSW. Este incremento en la resistencia mecánica a la flexión se atribuye a que el CSW actúa formando puentes que se enlazan fuertemente con los cristales de yeso, creando una red fuertemente unida. Keywords: Calcium sulfate whisker, Non-fired ceramic tile, Phosphogypsum, Palabras clave: Sulfato cálcico en forma de fibras, Baldosas cerámicas crudas, Fosfoyesos
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sheng2018boletncalcium Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Zimo Sheng;Jun Zhou;Zhu Shu;Yahaya Yakubu;Yun Chen;Wenbin Wang;Yanxin Wang
Journal medicinal chemistry (shariqah (united arab emirates))
Year 2018
DOI
DOI not found
URL
http://www.sciencedirect.com/science/article/pii/S036631751730095X
Keywords
glass Ceramics clay industries

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