Synthesis and Characterization of Porous Fly Ash-Based Geopolymers Using Si as Foaming Agent
This paper concerns the synthesis of foamed geopolymers using fly ash and metallic Si as the binder and the porogent agent, respectively. The Taguchi approach was applied in order to study the effect of some significant synthesis parameters such as the Si foaming agent content (% w/w fly ash based),...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/1942898 |
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| author | D. Kioupis Ch. Kavakakis S. Tsivilis G. Kakali |
| author_facet | D. Kioupis Ch. Kavakakis S. Tsivilis G. Kakali |
| author_sort | D. Kioupis |
| collection | DOAJ |
| description | This paper concerns the synthesis of foamed geopolymers using fly ash and metallic Si as the binder and the porogent agent, respectively. The Taguchi approach was applied in order to study the effect of some significant synthesis parameters such as the Si foaming agent content (% w/w fly ash based), the alkali type (R : Na or K), and the alkalinity (R/Al molar ratio) of the activation solution on the compressive strength and apparent density of the foamed geopolymers. The final products were characterized by means of XRD, FTIR, and SEM, while optical microscopy was applied for the evaluation of the porosity. Lightweight geopolymers with a compressive strength of 2.08–14.88 ΜPa and an apparent density of 0.84–1.55 g/cm3 were prepared by introducing a Si content up to 0.2% w/w on fly ash basis. |
| format | Article |
| id | doaj-art-44fd4d94825d4ac7ba5ddc8f70c977f3 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-44fd4d94825d4ac7ba5ddc8f70c977f32025-02-03T06:05:05ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/19428981942898Synthesis and Characterization of Porous Fly Ash-Based Geopolymers Using Si as Foaming AgentD. Kioupis0Ch. Kavakakis1S. Tsivilis2G. Kakali3National Technical University of Athens, School of Chemical Engineering, 9 Heroon Polytechniou St., 15773 Athens, GreeceHellenic Open University, School of Science and Technology, 18 Parodos Aristotelous St., 26335 Patras, GreeceNational Technical University of Athens, School of Chemical Engineering, 9 Heroon Polytechniou St., 15773 Athens, GreeceNational Technical University of Athens, School of Chemical Engineering, 9 Heroon Polytechniou St., 15773 Athens, GreeceThis paper concerns the synthesis of foamed geopolymers using fly ash and metallic Si as the binder and the porogent agent, respectively. The Taguchi approach was applied in order to study the effect of some significant synthesis parameters such as the Si foaming agent content (% w/w fly ash based), the alkali type (R : Na or K), and the alkalinity (R/Al molar ratio) of the activation solution on the compressive strength and apparent density of the foamed geopolymers. The final products were characterized by means of XRD, FTIR, and SEM, while optical microscopy was applied for the evaluation of the porosity. Lightweight geopolymers with a compressive strength of 2.08–14.88 ΜPa and an apparent density of 0.84–1.55 g/cm3 were prepared by introducing a Si content up to 0.2% w/w on fly ash basis.http://dx.doi.org/10.1155/2018/1942898 |
| spellingShingle | D. Kioupis Ch. Kavakakis S. Tsivilis G. Kakali Synthesis and Characterization of Porous Fly Ash-Based Geopolymers Using Si as Foaming Agent Advances in Materials Science and Engineering |
| title | Synthesis and Characterization of Porous Fly Ash-Based Geopolymers Using Si as Foaming Agent |
| title_full | Synthesis and Characterization of Porous Fly Ash-Based Geopolymers Using Si as Foaming Agent |
| title_fullStr | Synthesis and Characterization of Porous Fly Ash-Based Geopolymers Using Si as Foaming Agent |
| title_full_unstemmed | Synthesis and Characterization of Porous Fly Ash-Based Geopolymers Using Si as Foaming Agent |
| title_short | Synthesis and Characterization of Porous Fly Ash-Based Geopolymers Using Si as Foaming Agent |
| title_sort | synthesis and characterization of porous fly ash based geopolymers using si as foaming agent |
| url | http://dx.doi.org/10.1155/2018/1942898 |
| work_keys_str_mv | AT dkioupis synthesisandcharacterizationofporousflyashbasedgeopolymersusingsiasfoamingagent AT chkavakakis synthesisandcharacterizationofporousflyashbasedgeopolymersusingsiasfoamingagent AT stsivilis synthesisandcharacterizationofporousflyashbasedgeopolymersusingsiasfoamingagent AT gkakali synthesisandcharacterizationofporousflyashbasedgeopolymersusingsiasfoamingagent |