ABSTRACT
Abstract Extensive testing for the quality of the materials and concrete was carried out prior to and during the construction of a nuclear containment structure. The specification required use of low-heat cement and a concrete strength of 35 M P a at 90 days and, in some instances, 30 M P a at 28 days. This paper includes some of the test data on the materials and concrete. The properties of the in-place hardened concrete were deter mined by making test specimens after the concrete was pumped and vibrated into the formwork. The paper also includes some data on long-term creep and shrinkage tests carried out under laboratory conditions. The results of these various tests will be used as a baseline data for future monitoring of the performance of the structure.
