Effects of silicafume and fly ash on properties of alumina cement Hong Luu Thi, Long Luong Duc, Cham Trinh Thi, Luan Ta Van and Qui Duong Thanh MATEC Web Conf., 251 (2018) 01015 Published online: 14 December 2018 DOI: 10.1051/matecconf/201825101015