Bond Strength of Alccofine Based Normal and High Strength Concrete Using Pull Out Test

Abstract

The primary goals of this study are to determine the properties of the materials, design the mix proportion for normal strength concrete and high strength concrete, measure the bond strength of steel reinforcement in normal concrete and normal strength concrete using alumina, and then measure the bond strength of high strength concrete using alumina. The major focus of the study is the casting of cubes and cylinders, and the experimental investigation is limited to evaluating the bond strength between ordinary concrete and concrete containing Alccofine 1203 using the pull-out test. Recycling of waste is defined in the Waste Framework Directive as any recovery operation by which waste materials are reprocessed into products, materials or substances whether for the original or other purposes. There are several studies both in India and overseas that concentrate on the recycling or reuse of waste products from various sectors. Finding an appropriate cementitious substance to replace cement is one of those things. Numerous waste products, including fly ash, silica fume, GGBS, metakaoline, micro materials, quartz power, etc., have been tested as partial or whole replacements for cement in concrete. A new ultrafine material called Alccofine is tried out for replacing partially in this research. M20 and M60 grade of concrete is intended to study the performance of normal and high strength concrete by replacing the cement with alccofine of different dosages. Previous researches showed that the replacement of alccofine increases the strength. Design mix made for M20 and M60 grade and cubes casted with various percentage of alccofine with cement. The cubes are prepared initially for the design mix and determined the strength of concrete. Then specimens are prepared for the bond test and tested using pullout test methods. The results are analyzed and observed that the bond strength is increased with increase of alccofine replacement to certain dosage. Only the pull-out test is used to measure the bond stress for all specimens, and it has been found that the strength of the bond rises as the proportion of Alccofine replacement increases. The implanted bar is removed using UTM, and the rod slips are measured. The slip decreases as the weight and the proportion of Alccofine replacement rise. With an increase in concrete strength and a decrease in slip, the bond stress rose.