Effect of GGBS and curing temperature on microstructure characteristics of lightweight geopolymer concreteHilal El-Hassan, Najif Ismail, Sara Al Hinaii, Asma Alshehhi and Noor Al AshkarMATEC Web Conf., 120 (2017) 03004DOI: https://doi.org/10.1051/matecconf/201712003004