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
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...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-01-01
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| Series: | Journal of Asian Ceramic Societies |
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| Online Access: | http://dx.doi.org/10.1080/21870764.2020.1718860 |
| _version_ | 1831753395500744704 |
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| author | H. K. Tchakouté D. E. Tchinda Mabah C. Henning Rüscher E. Kamseu F. Andreola M. C. Bignozzi C. Leonelli |
| author_facet | H. K. Tchakouté D. E. Tchinda Mabah C. Henning Rüscher E. Kamseu F. Andreola M. C. Bignozzi C. Leonelli |
| author_sort | H. K. Tchakouté |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-21T23:21:12Z |
| format | Article |
| id | doaj.art-dd51efe5562d482d9e39de595d356195 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-12-21T23:21:12Z |
| publishDate | 2020-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-dd51efe5562d482d9e39de595d3561952022-12-21T18:46:48ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642020-01-018114916110.1080/21870764.2020.17188601718860Preparation of low-cost nano and microcomposites from chicken eggshell, nano-silica and rice husk ash and their utilisations as additives for producing geopolymer cementsH. K. Tchakouté0D. E. Tchinda Mabah1C. Henning Rüscher2E. Kamseu3F. Andreola4M. C. Bignozzi5C. Leonelli6University of Yaounde IUniversity of Yaounde IInstitut für MineralogieLocal Materials Promotion AuthorityUniversity of Modena and Reggio EmiliaUniversity of BolognaUniversity of Modena and Reggio EmiliaThis 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.http://dx.doi.org/10.1080/21870764.2020.1718860metakaolinmicrocompositenanocompositesodium waterglassgeopolymer cements |
| spellingShingle | H. K. Tchakouté D. E. Tchinda Mabah C. Henning Rüscher E. Kamseu F. Andreola M. C. Bignozzi C. Leonelli 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 Journal of Asian Ceramic Societies metakaolin microcomposite nanocomposite sodium waterglass geopolymer cements |
| 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | metakaolin microcomposite nanocomposite sodium waterglass geopolymer cements |
| url | http://dx.doi.org/10.1080/21870764.2020.1718860 |
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