中温煅烧钛石膏对砂浆力学性能的影响

The Effect of Medium Temperature Calcination of Titanium Gypsum on the Mechanical Properties of Mortar

摘要: 为了提高钛工业固废钛石膏的应用领域，以600℃、700℃、800℃分别煅烧1 h、2 h、3 h后的钛石膏为胶凝材料，等质量40%替代水泥制备了钛石膏砂浆，测试了砂浆试件7 d、14 d和28 d的抗折、抗压强度，研究中温煅烧钛石膏对砂浆力学性能的影响。研究结果表明：以700℃煅烧2 h的钛石膏为胶凝材料，所制备的砂浆7 d、14 d和28 d的强度较高，抗压强度分别为9.98 MPa、13.24 MPa和16.42 MPa，抗折强度分别为2.92 MPa、4.10 MPa和5.28 MPa。

Abstract: In order to improve the application field of solid waste titanium gypsum in the titanium industry, titanium gypsum mortar was prepared by using titanium gypsum calcined at 600˚C, 700˚C, and 800˚C for 1 hour, 2 hours, and 3 hours as cementitious materials, and replacing cement with 40% of the same mass. The flexural and compressive strength of mortar specimens at 7 days, 14 days, and 28 days were tested, and the effect of medium temperature calcined titanium gypsum on the mechanical properties of mortar was studied. The research results show that using titanium gypsum calcined at 700˚C for 2 hours as the cementitious material, the mortar prepared at 7 days, 14 days, and 28 days has high strength, with compressive strength of 9.98 MPa, 13.24 MPa, and 16.42 MPa, and flexural strength of 2.92 MPa, 4.10 MPa, and 5.28 MPa, respectively.