High Strength Tertiary Brand Concrete

Abstract

Concrete is the most important engineering material in construction industry because of its inherent strength properties. However, the addition of some other materials may change the properties of concrete. With increase in trend towards the wider use of concrete for pre-stressed concrete and high rise buildings there is a growing demand of concrete with higher compressive strength. Micro-silica, also called as silica fumes is produced in electric arc furnace as a by-product of the production of elemental silicones or alloys containing silicon.. Its handling and disposal is a point of concern because of the environment concerns. Silica fume is usually categorized as a supplementary cementations material. These materials exhibit pozzolanic properties, cementations properties and a combination of both properties. Due to these properties, it can affect the concrete behaviour in many ways. Significant amount of international research are going on with different alternative cement binders in recent years to develop optimum mixture. The mineral admixtures with pozzolanic properties such as fly ash (FA), silica fume (SF), ground blast-furnace slag (GGBS) and met kaolin (MK) are commonly used as a partial substitution of Portland cement during construction. These admixtures are often added to modify the physical and chemical properties of cementations mixes, performances and engineering properties of the concrete,. In comparison to ordinary Portland cement, the collection of GGBS as a by-product requires less energy and it produces less greenhouse gases. Thus, GGBS blended concrete is a more environmentally friendly concrete compared to OPC concrete. Cement can be replaced with the by products which are cementations in nature. Materials such as fly ash, slag are preferably being used; this will help to reduce the cement content and also provides the use of waste products as a replacement. This mixture will give proper bond with durability and strength also reducing the content of cement to greater extent