Title: Parametric study on sustainable geopolymer concrete
Authors: Sanghamitra Jena; Ramakanta Panigrahi
Addresses: Civil Engineering Department, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India ' Civil Engineering Department, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India
Abstract: The main cause of global warming generates from cement manufacturing industries. In order to reduce green house gas emission, development of alternative of cement is the main challenge. The industrial by-product fly ash (FA) which was rich in silica and alumina activated with sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) solution produced a binder. This was combined with natural coarse aggregate and fine aggregate to produce geopolymer concrete (GPC). This paper presents the experimental investigations on the fresh and hardened properties of GPC mix. Fresh concrete properties such as workability and hardened concrete properties like compressive strength (CS), split tensile strength (STS), flexural strength (FS), density and water absorption were investigated. Effect of sulphate, acid, chlorides on the compressive strength and weight were also studied. The results indicated that GPC could withstand the acidic environment. Behaviour of CS of GPC mixes were confirmed by the SEM images.
Keywords: geopolymer concrete; GPC; compressive strength; flexural strength; split tensile strength; Fourier transformed infrared spectroscopy; FTIR.
International Journal of Sustainable Materials and Structural Systems, 2018 Vol.3 No.3/4, pp.218 - 234
Received: 14 Dec 2018
Accepted: 29 Jan 2019
Published online: 09 Oct 2019 *