dc.identifier.uri |
http://dx.doi.org/10.15488/10710 |
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dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/10788 |
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dc.contributor.author |
Tchakouté, H.K.
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dc.contributor.author |
Tchinda Mabah, D.E.
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|
dc.contributor.author |
Henning Rüscher, C.
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dc.contributor.author |
Kamseu, E.
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dc.contributor.author |
Andreola, F.
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dc.contributor.author |
Bignozzi, M.C.
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dc.contributor.author |
Leonelli, C.
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dc.date.accessioned |
2021-03-30T11:22:30Z |
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dc.date.available |
2021-03-30T11:22:30Z |
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dc.date.issued |
2020 |
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dc.identifier.citation |
Tchakouté, H.K.; Tchinda, M.D.E.; Henning, R.C.; Kamseu, E.; Andreola, F. et al.: 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. In: Journal of Asian Ceramic Societies 8 (2020), Nr. 1, S. 149-161. DOI: https://doi.org/10.1080/21870764.2020.1718860 |
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dc.description.abstract |
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. |
eng |
dc.language.iso |
eng |
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dc.publisher |
London [u.a.] : Taylor & Francis |
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dc.relation.ispartofseries |
Journal of Asian Ceramic Societies 8 (2020), Nr. 1 |
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dc.rights |
CC BY-NC 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by-nc/4.0/ |
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dc.subject |
geopolymer cements |
eng |
dc.subject |
Metakaolin |
eng |
dc.subject |
microcomposite |
eng |
dc.subject |
nanocomposite |
eng |
dc.subject |
sodium waterglass |
eng |
dc.subject.ddc |
650 | Management
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ger |
dc.title |
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 |
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dc.type |
Article |
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dc.type |
Text |
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dc.relation.essn |
2187-0764 |
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dc.relation.doi |
https://doi.org/10.1080/21870764.2020.1718860 |
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dc.bibliographicCitation.issue |
1 |
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dc.bibliographicCitation.volume |
8 |
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dc.bibliographicCitation.firstPage |
149 |
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dc.bibliographicCitation.lastPage |
161 |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
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