Production and Characterization of Pozzolan with Raw Clay from Burkina Faso
| Autor: | Lamine Zerbo, François Ganon, Mohamed Seynou, Issiaka Sanou, Raguilnaba Ouedraogo, Younoussa Millogo, Kalsibiri Kaboré |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Cement
Materials science Fineness 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Thermal treatment Pozzolan engineering.material 0201 civil engineering law.invention Portland cement law Filler (materials) 021105 building & construction engineering Composite material Pozzolanic activity Metakaolin |
| Zdroj: | Journal of Minerals and Materials Characterization and Engineering. :195-209 |
| ISSN: | 2327-4085 2327-4077 |
| Popis: | Four raw deposits clayey materials in Burkina Faso have been characterized using X-ray diffraction, infrared spectroscopy and ICP-AES to evaluate their suitability to be used as pozzolan in cement. The samples have been activated by thermal treatment at 730°C during 5 hours. The obtained metakaolin was investigated by means of complementary techniques for their use as pozzolan in building materials. Fineness, surface area and amorphousness of metakaolins were the dominant factors which influenced their pozzolan reactivity. The compressive strengths of blended specimens were slightly increased with metakaolins named MK1 and MK2 than the reference for the substitution of 20 - 25 wt%. This was due to the metakaolins’ pozzolan reactivity and their filler effects which promoted CSH formation and reduced pores in the specimens. MK1 and MK2 were suitable for replacement of Portland cement in the field of building materials. |
| Databáze: | OpenAIRE |
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