Performance of Self Compacting Concrete Exposed to Marine Environment

Enhanced durability of concrete plays a crucial role in the serviceability of structures in marine environments. In this study, performance of self compacting concrete (SCC) blended with Fly Ash (FA) and Silica Fume (SF) in the form of binary and ternary mixtures in the simulated marine environment is investigated. This study aimed at utilization of high volumes of FA, up to 60% replacement of Ordinary Portland Cement (OPC), for development of sustainable and durable SCC located in marine environment. SCC was examined for fresh as well as hardened state characteristics like flowability, compressive strength, split tensile strength and durability characteristics such as sorptivity and chloride ion penetration resistance. The results showed that SCC can be prepared with FA and SF up to 40% and 10% replacement of OPC respectively. There was a remarkable improvement in the durability performance of SCC in ternary mixtures containing 30% FA and 10% SF. At later ages, SCC in ternary mixtures showed improved strength in marine environment.The experimental investigation indicated improved performance of high-volume FA based SCC in marine environments.