Potential Mixture of POFA and SCBA as Cement Replacement in Concrete – A Review Noorwirdawati Ali, Mohd Hazeeq Adhahuddinsa Mohd Sobri, Josef Hadipramana, Abdul Aziz Abdul Samad and Noridah Mohamad MATEC Web Conf., 103 (2017) 01006 Published online: 05 April 2017 DOI: 10.1051/matecconf/201710301006