Are existing IS codes suitable for engineering of HVFAC

Tracing back the history of the development of concrete, compressive strength was being considered as the most important parameter to classify this material since its inception. Even, in order to produce durable concrete, grade of concrete was generally increased, based on the perception that there was a direct relation between the strength of concrete and durability. It has been realised with experience that strength is not the only important parameter, other attributes such as durability and workability of concrete are also important for successful engineering of concrete structures. There are a number of cases of premature failure of concrete structures due to inadequate durability though concrete strength was high. This has led to the concept of developing high performance concrete (HPC). HPC is a concrete which is engineered to satisfy the criteria proposed to overcome the limitations of control concrete or normal strength concrete (NSC), in order to meet the requirements specific to its intended use. High volume fly ash concrete (HVFAC) is a type of HPC in which fly ash is used in higher quantity as supplementary cementitious material partially replacing Ordinary Portland Cement (OPC).