High Strength Concrete (HSC): Concrete Solution for Emerging High Rise Concrete Structures

Abstract

Today, the challenge to the construction industry is to construct tall structures with thin sections, which are economically viable and having good quality concrete finish. This necessitates the need to develop High Strength Concrete with expertise and available resources. Ambuja method of Concrete mix design method which is combination of IS and DOE method is used to design M80 concrete grade. In this project an attempt is made to study the behaviour of silica fume and Alccofine (3%, 5%, and 7% replacement by weight of cement) along with Fly Ash (20%) on fresh & hardened property of concrete. For fresh property of concrete, workability test were performed and results were compared with respect to dosage variations of minerals (3%, 5%, 7%) and also with each other. Test results include Initial Slump, Slump after 30min and Slump after 60min. For hardened concrete the development of compressive strength of concrete using SCM’s at the age of 1, 3, 7 and 28 days were investigated and compared with respect to SCM’s dosage variations and also with each other and for durability, the Penetration of Chloride Ion into Concrete by Ponding test was performed. This paper broadly covers the concept, need, advantages, materials, and mix design approach and strength characteristics of high strength concrete based on the learning from conducting the trials at our Concrete Labs and also on construction sites