Tikumporn Thubpo และ Prasert Suwanvitaya. (2013) Strength and fire-resistance of class C and class F fly ash geopolymer paste. Kasetsart University:ม.ป.ท.Tikumporn Thubpo และ Prasert Suwanvitaya. 2013. Strength and fire-resistance of class C and class F fly ash geopolymer paste. ม.ป.ท.:Kasetsart University;Tikumporn Thubpo และ Prasert Suwanvitaya. Strength and fire-resistance of class C and class F fly ash geopolymer paste. ม.ป.ท.:Kasetsart University, 2013. Print.