Table 1. Chemical composition of materials Compound FA(fly ash) C(cement) Na2O 0.53 0.15 MgO 0.72 2.47 Al2O3 26.87 6.34 SiO2 51.52 23.79 P2O5 0.87 0.14 SO3 1.48 2.29 K2O 0.67 0.59 CaO 6.48 57.29 TiO2 1.20 0.46 Cr2O3 - 0.09 MnO 0.01 0.18 Fe2O3 5.92 3.34 ZnO 0.02 SrO 0.06 ZrO2 0.07 BaO 0.03 Cl 0.05 Loss on ignition 3.43 2.69 Mbujje Joel Webster et al. Rheology and Setting Time of Cement Paste. American Journal of Civil Engineering and Architecture, 2015, Vol. 3, No. 6, 208-211. doi:10.12691/ajcea-3-6-3 © The Author(s) 2015. Published by Science and Education Publishing.