Memon, F.A. and Nuruddin, M.F. and Demie, S. and Shafiq, N.  (2012) Effect of superplasticizer and extra water on workability and compressive strength of self-compacting geopolymer concrete.  Research Journal of Applied Sciences, Engineering and Technology, 4 (5).  pp. 407-414.  ISSN 20407459