You can check this paper for how to design efficient and economic concrete mixes with locally available materials.
http://cigmat.cive.uh.edu/CIGMAT%20Conference/CIGMAT-08/Poster%2008/Emrah%20cigmat.pdfhttp://cigmat.cive.uh.edu/CIGMAT%20Conference/CIGMAT-08/Poster%2008/Emrah%20cigmat.pdf