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Tchakouté, H.K. [Verfasser:in]; Tchinda Mabah, D.E. [Verfasser:in]; Henning Rüscher, C. [Verfasser:in]; Kamseu, E. [Verfasser:in]; Andreola, F. [Verfasser:in]; Bignozzi, M.C. [Verfasser:in]; Leonelli, C. [Verfasser:in]

Preparation of low-cost nano and microcomposites from chicken eggshell, nano-silica and rice husk ash and their utilisations as additives for producing geopolymer cements - [published Version]

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  • Medientyp: Sonstige Veröffentlichung; E-Artikel
  • Titel: Preparation of low-cost nano and microcomposites from chicken eggshell, nano-silica and rice husk ash and their utilisations as additives for producing geopolymer cements
  • Beteiligte: Tchakouté, H.K. [Verfasser:in]; Tchinda Mabah, D.E. [Verfasser:in]; Henning Rüscher, C. [Verfasser:in]; Kamseu, E. [Verfasser:in]; Andreola, F. [Verfasser:in]; Bignozzi, M.C. [Verfasser:in]; Leonelli, C. [Verfasser:in]
  • Erschienen: London [u.a.] : Taylor & Francis, 2020
  • Erschienen in: Journal of Asian Ceramic Societies 8 (2020), Nr. 1
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/10710; https://doi.org/10.1080/21870764.2020.1718860
  • Schlagwörter: sodium waterglass ; nanocomposite ; microcomposite ; geopolymer cements ; Metakaolin
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: This work aims to prepare low-cost nanocomposite and microcomposite with lower molar ratio CaO/SiO2 (0.4). Nano-silica, rice husk ash and calcined chicken eggshell have been used as silica and calcium sources. Metakaolin has been separately replaced by 0, 10 and 20 wt% of each composite in order to study their behavior on the properties of geopolymers. The hardener used is sodium waterglass from rice husk ash. The surface area of nano-silica and rice husk ash was 54.40 and 4.08 m2/g, respectively. The cumulative volumes of the control geopolymer, the ones containing 10 wt% of microcomposite and nanocomposite are 119.71, 89.92 and 110.49 mm3/g, respectively. The compressive strength of the control specimen is around 64.02 MPa. The one using 10 wt% of microcomposite was 68.97 MPa. It drops to 42.88 MPa when metakaolin was replaced by 20 wt % of microcomposite. Whereas the one using 10 wt% of nanocomposite was 30.03 MPa and it decreases to 26.05 MPa when metakaolin was substituted by 20 wt% of nanocomposite. It can be concluded that 10 wt% of microcomposite could be mixed to metakaolin for strength development and nanocomposite does not recommend to use as an additive for producing high strength of geopolymer cements. © 2020, © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
  • Zugangsstatus: Freier Zugang
  • Rechte-/Nutzungshinweise: Namensnennung - Nicht kommerziell (CC BY-NC)