PERFORMANCE AND CHARACTERISTICS OF BOND BETWEEN HIGH STRENGTH CONCRETE AND STEEL REINFORCEMENT

Abstract

This paper presents and discusses the experimental results on investigating the performance and characteristics of bond strength induced between high strength concrete and embedded steel reinforcement. Four different mixes containing different combination of admixtures and portrayed 28 days compressive strength in the range of 60 and 100 N/mm2 were investigated. Experimental results showed trend of significant refinement in the bond strength between concrete and embedded steel bars with the increment in compressive strength from 60 to 100 N/mm2 . Particularly the concrete contained microwave incinerated rice husk ash (MIRHA) and a dosage of superplasticiser resulted in more than 10% higher bond strength as compared to that concrete incorporated silica fume and the same dosage of superplasticiser. Similarly, concrete contained a dosage of used lubricating oil instead of the dosage of superplasticiser showed the higher bond strength as compared to the normal strength concrete.