Potential Use of Industrial By-products for Developing High Strength Concrete UnderNormal Curing Conditions

Abstract

In the last decade, there has been a substantial increase in the use of high strength concrete (HSC) due to extensive construction of high rise buildings owing to restricted space and increased demand for living space in urban areas. For achieving high strength and durable concrete, it is essential to have minimum void content by packing the ingredients of the concrete densely. There have been lot of research studies performed on HSC, however, there are possibilities to improve the properties of HSC and economy by using conceptual mixture design and using industrial by-products (mineral admixtures). The present study focused on the development of high strength concrete using particle packing concept and properties such as flowability and compressive strength were assessed for different binder combinations [Micro Silica (MS): Ultrafine Fly Ash (UFA)]. For the mixture designing purpose, modified Andreassen model of particle packing was used. The water/binder (w/b) ratio of 0.20 was used. From the results, it is observed that a maximum slump of 780 mm and maximum 56 day compressive strength of 130.7 MPa using normal water curing was achieved.