Mix proportion design and engineering application of self-compacting fiber-reinforced concrete

Abstract

Self-compacting concrete (SCC) has been developed and deployed over the past four decades to enable vibration free placement in congested reinforcement while maintaining durability. Its superior filling ability and stability have led to broad adoption across building and infrastructure projects. Multiple mix design frameworks have emerged internationally, reflecting differing assumptions about paste demand, aggregate packing, and viscosity control. This study synthesizes the principles and procedures of five representative proportioning approaches for self compacting fiber reinforced concrete (SFRSCC), highlighting how fiber type and dosage interact with rheology and robustness. An engineering application using C60 steel fiber SCC for the China Central Television (CCTV) Headquarters project in Beijing is presented to illustrate screening of constituent materials, determination of minimum effective fiber content, and on site verification of fresh and mechanical performance. The findings provide operational guidance for mixture selection and implementation of SFRSCC in demanding placement conditions.