| Version | Summary | Created by | Modification | Content Size | Created at | Operation |
|---|---|---|---|---|---|---|
| 1 | Eng Editorial Office | -- | 169 | 2026-09-18 03:49:24 |
Self-compacting concrete (SCC) is a highly flowable, non-segregating concrete that can flow and consolidate under its own weight, completely filling the formwork and encapsulating congested reinforcement without any mechanical vibration [1]. Its deformability, passing ability, and resistance to segregation are achieved through a powder-rich binder system, reduced coarse-aggregate content (typically below 50% of total aggregate), and the combined use of high-range water-reducing (superplasticizing) and viscosity-modifying admixtures [2]. SCC is characterized by fresh-state tests such as the slump-flow, V-funnel, L-box, U-box, and J-ring tests, which quantify filling ability, passing ability, and resistance to static and dynamic segregation; EFNARC classifies SCC by filling, passing, and segregation-resistance classes and specifies minimum slump-flow ranges by application [1]. Unlike conventional concrete, which requires external vibration to expel entrapped air, SCC achieves uniform consolidation by self-weight while maintaining homogeneity during transport, placing, and finishing, and it exhibits hardened-state properties comparable to those of vibrated concretes of equivalent strength [3].