Behavior of geopolymer concrete under cyclic loading

Abstract

Much effort has been done on compressive strength of Geo Polymer Concrete (GPC) under monotonic loading to study the mechanical and durability properties. It is also very important to study its behavior when the concrete members are subjected to cyclic loads. In this research, some new concepts of nature of stress-strain curve, envelope curve and common point curve of geopolymer concrete are presented for three different grades of GPC. Investigations related to study of stress-strain characteristics of geopolymer concrete under cyclic loading is focused. The locus of common and stability points was determined from the cyclic stress-strain curve. The identification of these is an important contribution for the design of GPC. Analytical equations were proposed for envelope curve, common point curve and stability point curve. The Proposed curves fit well with experimental test data.