Concrete Mixture Selection and Characterization Study Olmsted Locks and Dam, Ohio River.

Abstract : This report documents a mixture proportioning investigation and complete thermal and mechanical properties study of potential concrete mixtures for use in constructing the Olmsted Locks and Dam on the Ohio River. The work was intended to support incremental construction analyses of the proposed structure and answer certain key questions about the feasibility of constructing a W-frame lock structure. A matrix of 12 concrete mixtures using Class C fly ash in amounts of up to 50 percent and Class F fly ash in amounts of up to 40 percent of the cementitous materials was proportioned and batched in the laboratory. From this matrix two mixtures, one with Class C and one with Class F fly ash, were selected based upon compressive strength requirements, economy, and thermal considerations for complete thermal and mechanical characterization.