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Nanocristalli di cellulosa da rifiuti di cotone

Nanocristalli di cellulosa da rifiuti di cotone

          
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About the Book

In questo studio sono stati ottenuti nanocristalli di cellulosa (NCC) da rifiuti di cellulosa di cotone. È stata poi valutata l'influenza della loro aggiunta in diverse concentrazioni sulla resistenza alla compressione, sulla porosità e sulla permeabilità delle paste di cemento Portland Casse G. L'NCC è stato ottenuto da scarti di fibre di cotone provenienti dal processo di levigatura mediante idrolisi acida (H2SO4 65% m/m). Sono state valutate concentrazioni di NCC dallo 0 allo 0,3%. Le prove meccaniche hanno mostrato un rapido aumento della resistenza alla compressione (dopo 24 ore di indurimento), con un guadagno di oltre il 40%. I test di porosità e permeabilità mostrano una riduzione di circa il 27% della porosità e del 25% della permeabilità delle paste dopo l'aggiunta di qualsiasi concentrazione di NCC. I risultati indicano che esiste un grande potenziale nell'utilizzo di NCC per migliorare la resistenza meccanica, ridurre la porosità e la permeabilità, consentendo così una sigillatura più efficace dello spazio anulare, impedendo la migrazione di gas attraverso la guaina di cemento e migliorando di conseguenza l'integrità del pozzo.


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Product Details
  • ISBN-13: 9786207414079
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Edizioni Sapienza
  • Height: 229 mm
  • No of Pages: 56
  • Spine Width: 3 mm
  • Width: 152 mm
  • ISBN-10: 6207414071
  • Publisher Date: 23 Apr 2024
  • Binding: Paperback
  • Language: Italian
  • Returnable: N
  • Weight: 95 gr

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