Evaluation of Pozzolanic Activity of Illitic and Lateritic Raw Materials from Burkina Faso
Journal Title: Chemical Science International Journal - Year 2017, Vol 18, Issue 1
Abstract
Aims: Evaluate the potentially use as pozzolan in cement replacement of activated Lateritic and Illitic raw materials from Burkina Faso. Place and Duration of Study: Laboratory of Molecular and Materials Chemistry-University of Ouagadougou, National Laboratory of Building and Publics Works-Ouagadougou, Burkina Faso. Between March 2015 and June 2016. Methodology: The initial two raw materials were characterized to perform its chemical, mineralogical, geotechnical and microstructure properties. The two samples were activated at 680°C during 2 or 5 hours to produce amorphous reactive materials. The activated samples were characterized using infrared spectroscopy and the selective dissolution by HF acid. Pozzolanic activity was assessed using saturated lime test, Frattini test, mineralogical analysis and compressive strength test. Mineralogical analyses were carried out with X-ray diffraction and DTA/TG. Results: The characterization of initial raw materials shown that lateritic material contain kaolinite (71%.wt) and Goethite (18%.wt) as the mains phases and the illitic material consisting by kaolinite (44%.wt) and illite (40%.wt). The activation of samples at 680°C, given amorphous phase (metakaolinite and silica) which amount around 74%.wt and 61%.wt respectively for lateric and illitic sample. The activated samples fixed at 7 days more than 80%.wt of lime. The DTA/TG test shown that at 8 days, lateric sample fixed between 33-37% and the illitic sample around 23% of portlandite produced by ement hydratation. The strength activity index, 91% and 97% respectively for lateritic and illitic samples exceeds require minimal value (75%) for pozzolan materials. Lateritic sample with finer particle and high amount of metakaolinite was presents a better pozzolan activity. However it strength is lower than those of Illitic sample. This inversion of previsible strength is due to the high contain of iron oxide in lateritic sample. Conclusion: The two samples, after heat treatment at 680°C during 2 hours, can be used as pozzolan for cement partial replacement in the constructions.
Authors and Affiliations
I. Sanou, M. Seynou, L. Zerbo, Y. Millogo, R. Ouedraogo, A. Sana
Keywords
Related Articles
- EP ID EP319612
- DOI 10.9734/CSIJ/2017/30995
- Views 86
- Downloads 0
Levels and Seasonal Variations of Polychlorinated Biphenyls (PCBs) in Sediment of Alariver, Ondo State, Nigeria
To assess the level of polychlorinated biphenyl (PCB) contamination in Ala river, surface sediments were collected from ten locations along Ala River, Ondo state, Nigeria and analyzed for the presence of 209 PCB congener...
Preparation and Characterization of Poly(L-lactic acid)/Chitosan/Microcrystalline Cellulose Blends
To prepare biodegradable and biocompatible polymer composites with better thermal and mechanical properties, five different Poly(L-lactic acid)(PLLA)/Chitosan/ Microcrystalline Cellulose (MCC) blends, with a different ra...
Heavy Metals and Essential Elements in Selected Medicinal Plants Commonly Used for Medicine in Tanzania
Several plants in Tanzania are known to be of potential therapeutic value and are used in traditional medicine system of the country. In this paper, two medicinal plants Moringa oleifera (leaves and roots), and Hibiscus...
Effect of Cooking on Arsenic Reduction in Two Rainfed Rice Varieties of Bangladesh and Their Health Risk Assessment
To investigate the effects of cooking on reducing the health risk, the concentrations of total arsenic in raw and cooked rice were measured. Raw rice of two rainfed rice varieties was purchased from market of Dhaka, Bang...
Production of Fat and Sterol by Aspergillus nidulans in Submerged Fermentation
The efficiency of fat and sterol production by Aspergillus nidulans was evaluated. The fungus was grown in media containing various carbon and nitrogen sources. Some agricultural waste materials namely, corn cob, rice hu...