A.H.L.Swaroop, K.Venkateswararao, Prof P Kodandaramarao / International Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 www.ijera.com Vol. 3, Issue 4, Jul-Aug 2013, pp.285-289 285 | P a g e Durability Studies On Concrete With Fly Ash & Ggbs A.H.L.Swaroop 1 , K.Venkateswararao 2 , Prof P Kodandaramarao 3 1 Assistant Professor, Civil Engineering Department, Gudlavalleru Engineering College,Gudlavalleru 2 Associate Professor, Civil Engineering Department, Gudlavalleru Engineering College,Gudlavalleru 3 Professor, Civil Engineering Department, Gudlavalleru Engineering College,Gudlavalleru ABSTRACT Durability of concrete is defined as its ability to resist weathering action, chemical attack, abrasion or any other process of detoriation. It also includes the effects of quality and serviceability of concrete when exposed to sulphate and chloride attacks. Fly ash and Ground Granulated Burnt Slag (GGBS) are chosen mainly based on the criteria of cost and their durable qualities., Not only this, Environmental pollution can also be decreased to some extent because the emission of harmful gases like carbon monoxide & carbon dioxide are very limited. In this paper our study is mainly confined to evaluation of changes in both compressive strength and weight reduction in five different mixes of M30 Grade namely conventional aggregate concrete (CAC), concrete made by replacing 20% of cement by Fly Ash (FAC 1 ), concrete made by replacing 40% of cement by Fly Ash (FAC 2 ), concrete made by replacing 20% replacement of cement by GGBS (GAC 1 ) and concrete made by replacing 40% replacement of cement by GGBS (GAC 2 ). The effect of 1% of H 2 SO 4 and sea water on these concrete mixes are determined by immersing these cubes for 7days, 28days, 60days in above solutions and the respective changes in both compressive strength and weight reduction had observed and up to a major extent we can conclude concretes made by that Fly Ash and GGBS had good strength and durable properties comparison to conventional aggregate in severe Environment. Keywords: Durability, Flyash, GGBS, Strength, Weight Changes, CAC, FAC 1 , FAC 2 , GAC 1 , GAC 2 . I. INTRODUCTION Now-a-days the most suitable and widely used construction material is concrete. This building material, until these days, went through lots of developments. The definition of concrete is the mixture of cement, water, additives or sometimes super-plasticizers. It is artificial material. In the beginning it is soft, ductile or fluid, and gradually will be solid. We can consider this building material as an artificial stone. The most important part of concrete is cement. The production process of this raw material produces a lot of CO2. It is well known, that CO2 emission initiates harmful environmental changes. Nowadays researchers make efforts to minimize industrial emission of CO 2 . The most effective way to decrease the CO2 emission of cement industry, is to substitute a proportion of cement with other materials. These materials called supplementary cementing materials (SCM’s). Usually used supplementary cementing materials are Ground Granulated Blast Furnace Slag (GGBS), Fly Ash (FA), Silica Fume (SF), Trass or Metakaolin (MK).These are typically industrial by- products, hence the application of SCM’s results less CO2 during cement production. The SCM’s provide other advantages and that is why the usage in the concrete technology is more and more general. The aim of our study is to get acquainted with these SCM’s and to examine some features. The most interesting feature is to increase chemical resistance of concrete. We will focus in our examinations on GGBS and FA. In our scientific experiments we examine the influence of SCM’s on weight loss and on the strength also. . In this study we describe the results of examinations and conclusions with GGBS & FA. We present the experimental program the further activities and works. 1.1 Durability A long service life is considered synonymous with durability. Since durability under one set of conditions does not necessarily mean durability under another, it is customary to include a general reference to the environment when defining durability. According to ACI Committee 201, durability of Portland cement concrete is defined as its ability to resist weathering action, chemical attack, abrasion, or any other process of deterioration; that is, durable concrete will retain its original form, quality, and serviceability when exposed to its environment. No material is inherently durable; as a result of environmental interactions the microstructure and, consequently, the properties of materials change with time. A material is assumed to reach the end of service life when its properties under given conditions of use have deteriorated to an extent that the continuing