Innovative Use of Waste Steel Scrap in Rigid Pavements

Abstract

This paper work assessment on the study of the workability and mechanical strength properties of the high strength concrete reinforced with industrial waste fibers. This waste steel scrap material which is available from the lathe is used as a steel fiber for innovative construction industry and also in pavement construction. Lathe waste is generated by each lathe industries and dumping of these wastes in the barren soil contaminating the soil and ground water, which creates an unhealthy environment. In addition to get sustainable development and environmental benefits, lathe scrap as recycled fibers with concrete are likely to be used. Experimental studies are done to know about fresh and hardened concrete properties of SFRC and their mechanical properties such as compressive strength, flexural strength and split tensile strength are found to be increased due to the addition of steel scrap fiber in the concrete. When compared with conventional concrete to SFRC, steel fiber increases flexural strength by 40% and considerable increase in compressive and tensile strength. These fibers may also contribute to improve properties such as shrinkage reduction, modulus of elasticity, toughness, resistance to cracking and preventing crack propagation. The workability of fresh concrete containing lathe scraps are carried out by using slump test. This paper focuses on structural strength enhancement and improvement in fatigue life of rigid pavement by locally available scrap steel. These rigid pavements using steel scrap promises an appreciably higher design life, offer better serviceability and minimize crack growth and corrosion. The innovative idea of this paper is the use of waste lathe scrap as recycled steel fibers, which provides more economical and environmental sustainable SFRC PAVEMENTS.

Key words: lathe scarps steel fibers, Fatigue endurance, Flexural strength, workability, Tensile strength.