22-10-2014, 03:22 PM
Abstracts: Concrete occupies unique position among the modern construction materials, Concrete is a material used in building construction, consisting of a hard, chemically inert particulate substance, known as an aggregate (usually made of different types of sand and gravel), that is bonded by cement and water. A mix design procedure for high-performance concrete mixes has been presented in this paper. Since rheological parameters and compressive strength are fundamental properties of concrete in two different stages of production, the correlation between rheological parameters and compressive strength has been used instead of using water-cement ratio versus compressive strength relationship. Water-cement ratio and aggregate volume to paste volume ratio has also been determined from rheological behaviour and used in the mix design. In the proposed method, the designer is able to estimate parameters like compressive strength and economical costing at the design stage for a given target strength, in addition to ingredients of concrete.