Title:
Development of Bond Strength of Reinforcement Steel in Self-Consolidating Concrete
Author(s):
Yin-Wen Chan, Yu-Sheng Chen, and Yi-Shi Liu
Publication:
Structural Journal
Volume:
100
Issue:
4
Appears on pages(s):
490-498
Keywords:
bar; bleeding; bond strength; self-consolidating concrete; steel.
DOI:
10.14359/12658
Date:
7/1/2003
Abstract:
Self-consolidating concrete (SCC) is an extremely fluid yet stable concrete that can flow consistently in its own weight and fill in formwork without the need of consolidation. The application of SCC effectively resolves the difficulties of concreting in situations with complicated formwork and intricate reinforcements. In this paper, the bond between SCC and reinforcements was investigated. The bonding strengths of reinforcing bars were measured using full-scale reinforced concrete (RC) members of SCC and of ordinary concrete. The SCC members were cast without applying any consolidation, whereas the members of ordinary concrete were cast by conventional practice with substantial consolidation and vibration. The results showed that SCC members generated significantly higher bond to reinforcing bars than did ordinary concrete members. It was also found in this investigation that the reduction in bond due to bleeding and inhomogeneous nature in the case of ordinary concrete was prevented in the case of SCC.