JMMCE  Vol.3 No.3 , May 2015
Evaluation of Effects of Synthetic Compound and Mineral Admixture on Crystal Structure of Concrete
The effects of mineral admixture on the internal morphology of concrete were studied and evaluated in this work. Portland cement with five different additives was used in the complex admixture. These includes: extracted silica from corn hob ash, synthetic calcium carbonate, synthetic calcium hydrogen carbonate, white and dark kaolin, each replacing 10% of cement in the concrete formulation. The additives and the pure cements were subjected to intensive mixing to ensure homogeneity prior to water addition, after which each undergoes casting and curing. Elemental characterizations of the additives indicated the presence of some elemental oxides and crystallography studies were carried out on the pure and reinforced concrete. The obtained result indicated crystallographic adjustments of the indigenous concrete which will definitely contribute to modifying its mechanical properties.

Cite this paper
Olusunle, S. , Ezenwafor, T. , Jiddah-Kazeem, B. , Kareem, A. , Akinribide, O. and Oyelami, A. (2015) Evaluation of Effects of Synthetic Compound and Mineral Admixture on Crystal Structure of Concrete. Journal of Minerals and Materials Characterization and Engineering, 3, 134-141. doi: 10.4236/jmmce.2015.33016.
[1]   Awang, H., Mydin, Md.A.O. and Roslan, A.F. (2012) Effect of Additives on Mechanical and Thermal Properties of Lightweight Foamed Concrete. Advances in Applied Science Research, 3, 3326-3338.

[2]   Lam, L., Wong, Y.L. and Poon, C.S. (1998) Effects of Fly Ash and Silica Fume on Compressive and Fracture Behavior of Concrete. Journal of Cement and Concrete Research, 28, 271-283.

[3]   Langan, B.W., Weng, K. and Ward, M.A. (2002) Effect of Silica Fume and Fly Ash on Heat of Hydration of Portland Cement. Journal of Cement and Concrete Research, 32, 1045-1051.

[4]   Ramachandran, V.S. (1995) Concrete Admixture Handbook. Noyes Publication, New Jersey.

[5]   Ismeik, M. (2009) Effect of Mineral Admixtures on Mechanical Properties of High Strength Concrete Made with Locally Available Materials. Jordan Journal of Civil Engineering, 3, 78-90.

[6]   Sobolev, K. (2003) Effect of Complex Admixture on Cement Properties and the Development of Test Procedure for the Evaluation of High Strength Cement. Advances in Cement Research, 15, 1-9.

[7]   Haque, M.N. and Kayali, O. (1998) Properties of High-Strength Concrete using a Fine Fly Ash. Journal of Cement and Concrete Research, 28, 1445-1452.

[8]   Shannag, M.J. (2000) High Strength Concrete Containing Natural Pozzoland and Silica Fume. Journal of Cement and Concrete Composites, 22, 399-406.

[9]   Toutanji, H.A. and El-Korchi, T. (1996) Tensile and Compressive Strength of Silica-Fume Cement Pastes and Mortars. Journal of Cement, Concrete and Aggregates, 18, 78-84.

[10]   Batrakov, V.G. (1990) Modified Concrete. Stroyizdat, Moscow, 6-37.