Developing low-carbon sustainable building material by adding micro steel fiber with recycled aggregate concrete

Abstract Concrete is the most tremendous and widespread building material in the world. Building materials have become expensive and scarce. There is a tremendous need for substitute materials made from industrial waste in this desolate area. In concrete, ensuring the most expedient utilization of recycled aggregate (RA) from demolished structures can aid in the preservation of the natural surroundings, environment, and dumping space. The natural aggregate is eliminated with RA by (25, 50, 75, and 100%) volumes were carried out in 7, 14, and 28 days. Due to drying shrinkage, fresh concrete develops structural fissures, resulting in structural failure. Adding micro steel fiber is one of the most efficient strategies for improving the concrete’s characteristics like tensile strength, compressive strength, and flexural strength. In addition to this, a comparison is made between conventional concrete and RA concrete furthermore contains micro steel fiber enhancing the enforcement that leads to unreeling concrete. The outcomes of micro steel fiber onto RA concrete are assessed, and the conflicts among natural and RA attributes are addressed and discussed in detail.