Mix-Design of high performance concrete (HPC) by using Pozzolanic material

Abstract

The high performance concrete (HPC) was introduced for construction industry in order to considerstrength requirements for highly durable structures. The structural strength of HPC by usingPozzolanic materialwas introduced. The 58 concrete specimens of Silica-Fume (SF) and Metakaolin (K) with different percentages were analyzed. The quality of mixed concrete wasassessed through mechanical properties like workability and compressive strength for performance assessment of concrete. Empirical correlation were developed to estimatecompressive strengthsat 7th and 28thdays.This study will be helpful in identifying the influence of Pozzolanic materials,such as Silica-Fume and Metakaolin in describing the strength characteristics of HPC. The optimum use of mineral admixtures at different percentages of Silica-Fume (SF) (i.e., 0%, 5%, 10%, 15%, 20% and 25 %), Metakaolin (K) (i.e., 2.5%, 5%, 10%, 15%, 20% and 25%), and varying percentages of Super-Plasticizer (SP) (i.e., 0.1%, 0.2%, 0.3%, 0.4%, 0.5 and 0.6%) was revealed from the results of compressive strength. The results showedthat the workability and compressive strength increase at a certain level and after that, they decline withfurther increaseinthe replacement level of Silica-Fume and Metakaolin