Title: Dynamic Properties of Mass Concrete Obtained from Dam Cores

Author(s): David W. Harris, Caroline E. Mohorovic, and Timothy P. Dolen

Publication: Materials Journal

Volume: 97

Issue: 3

Appears on pages(s): 290-296

Keywords: core tests; dynamic modulus; dynamic strength; earthquake properties; mass concrete.

DOI: 10.14359/4624

Date: 5/1/2000

Abstract:
This paper summarizes the results of a U.S. Bureau of Reclamation research project designed to provide a broad database of material properties for mass concrete tested at strain rates that correspond to seismic (dynamic) and static loadings. Laboratory tests were per-formed on cores drilled from dams and tested at strain rates that sim-ulated dynamic and static loading conditions. Ratios of dynamic and static compressive strength, modulus of elasticity, compressive failure strain, Poisson’s ratio, and splitting tensile strength are summarized. The effects of core size and sample saturation are also considered. Results of this study indicate that dynamic-static strength ratios are greater than 1 for both the compressive and tensile strength tests. The dynamic-static ratios of modulus of elasticity and failure strain for the compressive strength tests, however, are generally less than or equal to 1.