Bond strength of reinforcement steel in self-compacting concrete

Self-compacting concrete (scc) is a highly fluid yet stable concrete that can flow consistently under its own weight, pass between bars, and fill in formwork without the need of compaction. the application of scc effectively resolves the difficulties of concreting in situations with complicated formwork and congested reinforcements. in this paper, the bond between scc and steel reinforcement was investigated. the bonding strengths of reinforcing bars were measured using cubic specimens of scc and of normal concrete. the scc specimens were cast without applying compaction, whereas the specimens of normal concrete were cast by conventional practice with substantial compaction and vibration. the results showed that scc specimens generated higher bond to reinforcing bars than normal concrete specimens and the correlation between bond strength and compressive strength ofnc is more consistent.