Abstract: Dynamic triaxial compressive tests for different weathering degrees granite were conducted with loading rates 1-105 MPa/s and confining pressure 3 MPa. The results show that the compressive strengths of the different weathering degrees granites are all increase with the increasing of the loading rate; and the increment of the compressive strength increases with the increasing of the weathering degree. The Young's moduli of the different weathering degrees granite are all increase with the increasing of the loading rate; and the increment of the Young’s modulus remain unchanged with the increasing of the weathering degree. The Poisson's ratios of the different weathering degrees granites are all decrease with the increasing of the loading rate

Key words: loading rates, triaxial compression, weathering degree, compressive strength, Young's modulus