Predictive tools for controlling the quality and durability of concrete

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New developments in concrete technology have resulted in changes in the types of concrete used in civil engineering applications as well as the performance requirements. Use of new cements and new mineral and chemical admixtures have led to the development of high performance concrete (HPC) and self-consolidating concrete (SCC). HPC and SCC present numerous advantages such as high strength, high elastic modulus, less bleeding, less creep, and high durability. For example SCC is a highly flowable concrete that can spread easily and self consolidate under its own weight without segregation. Stricter performance requirements, mainly durability, have also been imposed on these concrete to ensure longevity. At present, standard test methods have not been developed to ensure quality of the fresh concrete and its compliance with the durability and other structural requirements.