the late-life, in situ properties of concrete in nuclear power station structures

摘要

This paper describes an approach to predicting the late-life properties of concrete in nuclear power station (NPS) structures. Such data are needed to evaluate the performance of NPS structures under continued opera- tion or when subjected to a short-term event leading to extreme conditions. A predictive model is described which uses as its starting point the 28-day compressive strength of the concrete, this being the measure used for quality control during construction. other proper- ties are derived using empirical relationships.