jailcd2019-053: Shear Behavior in Cracked Geopolymer Concrete under Cyclic Load

Abstract

The purpose of this  study is to investigate  shear stiffness and deformation behavior of fly ash-based geopolymer (GP) concrete under cyclic load. The dimensions of specimen were 100×100×200 mm, and the dimensions of shear surface was 80×80mm by providing a notch which intends to introduce single crack at certain position. In addition, the same specimens made from Ordinary Portland Cement (OPC) were prepared to compare their behavior with that of geopolymer. For the direct sheartest with single crack surface, Hager’s method was adopted. For GP concrete, the relationship between shear force and shear displacement didn’t clearly show a certain point where the displacement started to increase rapidly. The peak of tangential shear stiffness of GP concrete was not also clearly observed. Further investigation is required to identify the difference in terms of mechanical property of GP binder.