Abstract: The mechanical behaviors of 12 steel reinforced columns with various aggregate types and eccentricities were tested under large eccentric compression loads ( e0/h=0.32, 0.40 and 0.48 ). The failure mode, cracking strength, ultimate strength and deformation of the columns with high titanium heavy slag aggregate are evaluated and compared with those of conventional steel reinforced concrete columns. The test results indicate that the failure pattern of the columns with high titanium heavy slag aggregate is similar to that of conventional concrete columns. The strength and stiffness of the column with coarse aggregate of high titanium heavy slag aggregate gravel and fine aggregate of natural sand are superior to those of conventional concrete columns. The cracking strength, load carrying capacity and stiffness of the columns with totally high titanium heavy slag aggregate or coarse aggregate of natural gravel and fine aggregate of high titanium heavy slag sand are close to those of conventional concrete columns. Based on the test results, the load-deformation curves of all specimens were numerical calculated by finite element method. The simulated results are found to be in good agreement with test data, which indicates that the theoretical model can be used to predict the load-deformation response of the columns with high titanium heavy slag aggregate.