International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 03 | Mar-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 2734 EXPERIMENTAL INVESTIGATION ON EFFECT OF ALCCOFINE WITH FLYASH AND GGBS ON HIGH PERFORMANCE CONCRETE JIGAR SAIYA 1 , ANKIT TIWARI 2 , SEEMA JAGTAP 3 1,2 BE Student, Dept. of Civil Engineering, Thakur College of Engineering and Technology, Mumbai, Maharashtra, India 3 Professor and Head, Dept. of Civil Engineering, Thakur College of Engineering and Technology, Mumbai, Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - The necessity of high performance concrete is increasing because of the increasing demand of the construction materials in the construction industry. Efforts for improving the performance of concrete over the past few years suggest that cement replacement materials along with Mineral & chemical admixtures can improve the strength and durability characteristics of concrete. This project is an attempt to study the behaviour of Alccofine 1203 (5%, 6%, 7%, 8% and 10% replacement by weight of cement) along with Fly Ash (15%) and GGBS (15%) replacement on fresh & hard property of concrete. As well as optimizing the percentage dosage of chemical admixture to achieve required retention period (up to 3hrs) and workability (Slump and Flow) to increase the productivity of concrete design. This paper also studies the effectiveness of applying value engineering to actual concrete mixtures. The application of value engineering to such concrete mixtures results in increase in performance, optimizing the mix by adding appropriate dosage of admixtures so as to work in different situation and increase its value, increase in durability of structure in which concrete will be used, reduction in cost of concrete and overall cost of construction projects, increasing the market share and competitiveness of concrete producers. This research shows that applying the methodology of value engineering to ready- mixed concrete is an effective way to save around 7.5-8.5 % of the total cost of concrete mixtures supplied to construction projects. Key Words: High Performance Concrete (HPC), Fly Ash, GGBS, Alccofine 1203, Value Management, Quality Improvement. 1. INTRODUCTION High performance concrete is known as high technology construction material, proving to be very cost effective, reliable, and having long term durability in natural environment. Number of investigations are carried out to produce concrete with desired characteristics such as workability , strength and durability. With the advancement of technology the strength, workability, durability and other characteristics of the ordinary concrete are modified to make it more suitable for work in various situations. So HPC technologies have used for the construction of numerous off-shore structures and long span bridges; repairs & rehabilitation works. The ingredients which are becoming scarce and expensive, has lead to the usage of economically alternative materials. Flyash and Ground granulated blast slag (GGBS) has been used as a replacement for OPC since this material has workability, strength and durability which enhance the characteristics of concrete. Alccofine is a specially processed product based on slag with high reactivity obtained through the process of controlled granulation. The development of High Performance concrete (HPC) has brought about the essential need for additives both chemical and mineral to improve the performance of concrete. Adding value engineering in our project and thus improving the overall quality of concrete will help in increasing value of the concrete mix and reducing the overall cost and thus increasing the durability of the structure in which concrete is used. 1.1 Admixture Mineral Admixture: Mineral admixtures are fine powders mainly composed of silicate glasses or non crystalline silica which in the presence of moisture, calcium and hydroxyl ions, slowly hydrate to form cementing products. The most commonly used mineral admixtures in our country are Flyash and GGBS. For higher grade of mix, Alccofine 1203 is most accepted by various concrete producers. Mostly these admixtures are used in range of 5 – 50% replacement with cement. Chemical Admixture: Besides using mineral admixture, certain chemicals are also used to enhance the performance of concrete like retarder, super-plasticizer. Retarder is used to increase the retention period of concrete (up to 3 hours) and Super-plasticizer is used to reduce water content simultaneously increasing flow of concrete (flow able to pump). 1.2 Role of Admixtures in High Performance Concrete [3]  Engineering Performance  Economic Performance  Environmental Performance 1.3 Micro Ingredients Fly-Ash: Pozzolans are mainly a type of siliceous or siliceous and aluminous material, which in a finely disintegrated form