Mechanical Properties of Steel Fiber Reinforced Concrete using Recycled Aggregate

Quickly diminishing natural resources and deteriorating environment are one of the major concerns that should be the foundation of sustainable development. Huge amount of concrete and debris produced from deteriorated and demolished structures, testing specimens are imparting severe environmental and ecological problems. To tackle this, one of the smarter way is to use this waste as recycled aggregate, henceforth utilizing the waste as well as reducing the dependency on natural resources. In the research conducted, steel fiber reinforced concrete with recycled aggregate was used in various proportions. Specimens were tested for different properties- compressive strength, split tensile strength and flexural strength. The concrete specimen tested contained recycled aggregate in various proportion of 40%, 50% and 60%, followed by addition of steel fibers- crimpled, both ends hooked and a hybrid of both the types. The flexural behavior was tested on a model beam while other behaviors on cubes and cylinders. The results reflected that the addition of steel fibers and recycled aggregate into concrete is an effective way towards the sustainable development simultaneously with effective strength.