Future and scope for development of calcium and silica rich supplementary blends on properties of self-compacting concrete - A comparative review

Abstract

Self-compacting concrete (SCC) is a highly stabilized flowable concrete that can be used in both dynamic and static states without segregation. Additionally, the exceptional homogeneity of the material contributes to its strength and durability. To produce sustainable SCC, it is necessary to incorporate appropriate supplementary cementitious materials (SCMs) to enhance mass construction applications. Thus, this review of SCC examines the stages of development and adoption, with a particular emphasis on the role of various calcium-rich, silica-rich, and engineered/reactive silica-rich SCMs as blends in achieving sustainable concrete. By summarising and comparing the properties of SCC in the plastic and hardened states in terms of workability, segregation, strength, and durability. According to the annotations in this review, researchers proposed that during the early stages of developing studies on SCC, the limits of constituent material proportioning be designed with the influence of ultra-fine fly ash (UFFA), an improved reactive supplementary material with a more appropriate particle size that is engineered from high silica-rich fly ash. Additionally, prior research indicates that an artificial neural network (ANN) is a more effective prediction tool for conducting and validating SCC experiments. However, no comprehensive study has been conducted on the effect of ultra-fine fly ash (UFFA) on SCC in the plastic and hardened states; additionally, the ANN can be an excellent tool for validating those properties, which is the novel scope of this review.

Keywords

• Self-compacting concrete
• Supplementary cementitious materials
• Ultra-fine fly ash
• ANN
• Strength
• Durability