Author(s)

Mohamed Seynou^1*, Younoussa Millogo^1,2, Lamine Zerbo¹, Issiaka Sanou¹, François Ganon¹, Raguilnaba Ouedraogo¹, Kalsibiri Kaboré³

¹Laboratoire de Chimie Moléculaire et des Matériaux, UFR/Sciences Exactes et Appliquées, Université Ouaga I, Ouagadougou, Burkina Faso.
²Université Polytechnique de Bobo-Dioulasso, UFR/Sciences et Techniques, Bobo-Dioulasso, Burkina Faso.
³Laboratoire National de Batiment et de Travaux Publics, Ouagadougou, Burkina Faso.

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.

Raw Clayey Materials, Characterization, Metakaolin, Pozzolan Reactivity, Building Materials

Seynou, M. , Millogo, Y. , Zerbo, L. , Sanou, I. , Ganon, F. , Ouedraogo, R. and Kaboré, K. (2016) Production and Characterization of Pozzolan with Raw Clay from Burkina Faso. Journal of Minerals and Materials Characterization and Engineering, 4, 195-209. doi: 10.4236/jmmce.2016.43018.