| Popis: |
The performance of reinforced concrete primarily depends on the bond strength and is defined as resistance to slipping of the reinforcing steel bars from the concrete. This slipping resistance is predominate mode of failure in predicting the mechanical performance of RCC, particularly to its failure mode and adhesion between steel reinforcement and concrete. In the present study an attempt is made to study the bond strength of structural grade concrete (M35) with high strength steel (Fe415) of 12, 16 and 20 mm (Fe500) embedded in the core of concrete. The pull-out test was carried out for various mixes of concrete with an addition of GGBFS as partial replacement with cement (10–30%). Also, attempt is made to evaluate the resistance for slippage, rupture behaviour and stress distribution are studied using finite element analysis tool. The study reveals that the bond strength improves the consideration of mineral admixture and also seems to improve with diameter of reinforcing bars for GGBFS binder-based concrete. The microstructure (SEM) is also evident for the minimal voids and densification with addition of GGBFS as binder, which enhances the bond strength with a partial replacement of cement. The numerical study closely reviews the experimental investigation. |
