A Study on Mechanical Properties of High Strength Geo-Polymer Concrete

Abstract

Finding means of utilizing waste products is very important in field of research at this moment. Efforts are urgently underway all over the world to develop environment friendly construction materials which help to reduce greenhouse gas emissions from Cement industries. In this connection, Geopolymer concretes (GPCs) are new class of building materials that have emerged as an alternative to Ordinary Portland Cement Concrete (OPCC) and possess the potential to revolutionize the building construction industry. Researchers have critically examined the various aspects of their viability as binder system. GPCs were produced from fly ash mixing with alkaline activators of sodium hydroxide and also sodium silicate solutions of some molar concentration. High range water reducing admixtures are used to develop sufficient workability. The objective of the present work is to study the effect of SCMs in fly ash based Geopolymer concrete at ambient room temperature curing. The present work deals with a development of Ground Granulated blast furnace slag (GGBS) based GPC. Trial mixes are carried out and results are compared. Workability properties of fresh state are measured and flexural strength properties are assessed at 7 and 28 days. The Reinforced GPC and OPC beams were designed considering a balanced section for the expected characteristic strength. Beams of length 1.15 m are laid to have a clear span of a one meter length beam and a cross section of 100*150 mm is chosen. Flexural behaviors of reinforced beams are assessed in UTM using 0.01 mm least count deflect meters. LoadDeflection characteristics are obtained and study has been carried out simultaneously