DYNAMIC ENERGY-ABSORBING CHARACTERISTICS OF LIGHTWEIGHT VERMICULITE CONCRETE
TEXAS UNIV AT AUSTIN STRUCTURAL MECHANICS RESEARCH LAB
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The dynamic energy-absorption characteristics of confined lightweight vermiculite concrete are presented in the form of stress-strain and stress-time curves. In addition, data are included which show the effects of impact velocity and impact mass weight on these characteristics. Stress-strain and energy-absorption characteristics are discussed. A comparison is made between a dynamic and a static stress-strain curve for this material. For a cement to vermiculite mix of 1 to 8, the initial peak crushing stress is between 420 and 570 psi, and the average crushing stress to 30 strain is between 350 and 450 psi. The energy dissipated to 30 strain is between 8.8 and 10.9 ft-lbcu in.
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