This report describes an investigation to develop information on the time-dependent deformation behavior of concrete in the presence of temperature, moisture, and loading conditions similar to those encountered in a prestressed concrete reactor vessel (PCRV). This particular investigation encompassed one concrete strength (6000 psi at 28 days), three aggregate types (chert, lime¬stone, and graywacke), one cement (Type II), two types of specimens (as-cast and air-dried), two levels of temperature during test (73° and 150°F), and four types of loading (uniaxial, hydrostatic, biaxial, and triaxial).nThis effort was intended primarily as a data report; therefore, the ex-perimental procedures and results are presented in detail. A comprehensive evaluation of the effects of various parameters and their interactions on the behavior of concrete was not included in this report. However, a number of general comparisons were made concerning the effect of the various test conditions on concrete behavior. Based on this limited evaluation of the data, general conclusions and recommendations for additional work were formulated.
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