Dynamic Properties of Plain Concrete in Triaxial Stress State
In this study, the dynamic behavior of plain concrete at high strain rates was experimentally investigated with over 60 cubic specimens using a custom-designed, triaxial, servo-hydraulic controlled testing machine. Each specimen was axially loaded by a gradually increasing force at a constant strain rate of 10-5 second-1, 10-4 second -1, or 10-3 second-1 and laterally confined at a constant pressure of 0, 4, 8, 12, or 16 MPa (0, 0.58, 1.16, 1.74, or 2.32 ksi). The axial stressstrain curves under various confining pressures were analyzed and discussed at each strain rate. Test results indicated that both the ultimate strength and its corresponding strain increased significantly with the confining pressure. Their empirical equations accounting for the effects of triaxial stresses and strain rates were developed. As the strain rate increases, the ultimate strength increases substantially under low confinement and moderately under high confinement.
D. Yan et al., "Dynamic Properties of Plain Concrete in Triaxial Stress State," Materials Journal, vol. 106, no. 1, pp. 89 - 94, American Concrete Institute (ACI), Jan 2009.
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Deformation; Dynamic Behavior; Strain Rate; Stress-Strain Curves; Triaxial Stress State; Confining Pressures; Constant Pressures; Constant Strain Rates; Cubic Specimens; Dynamic Properties; Empirical Equations; High Confinements; High Strain Rates; Plain Concretes; Rate Increase; Test Results; Testing Machines; Ultimate Strengths
International Standard Serial Number (ISSN)
Article - Journal
© 2009 American Concrete Institute (ACI), All rights reserved.
01 Jan 2009