Effect of critical parameters on the fresh properties of Self Compacting geopolymer concrete

The aim of this paper is to study the effect of critical parameters with their acceptable wide range of vari-ations in the production of a Ground Granulated Blast Furnace Slag (GGBFS) based Self-Compacting Geopolymer Concrete (SCGC) with acceptable passing and filling ability as per British Standard. In the absence of specific design code, various critical parameters with their ranges of variations are: molarity of alkaline solution (10 M, 12 M and 14 M), alkaline activated solution (AAS) ratio (2, 2.5 and 3), percent-age of superplasticizer (4%, 6% and 8%) and extra water (18%, 21% and 24%). The raw materials involved in the manufacturing of SCGC i.e., fine aggregate and coarse aggregate were characterized as per existing Indian codes and supplier properties for GGBFS (except specific gravity), superplasticizer, sodium hydrox-ide and sodium silicate solution were used. The SCGC thus produced out of the design mix prepared, based on all the variables, were examined for the workability criteria. It is further perceived that the wide range of four critical parameters are narrowed down and specific values of the affecting parameters can only be obtained with the help of hardened property study.Copyright (c) 2022 Elsevier Ltd. All rights reserved.Selection and peer-review under responsibility of the scientific committee of the International Confer-ence on Materials, Mechanics, Mechatronics and Manufacturing.

Automated summary

The aim of this paper is to study the effect of critical parameters on the production of SCGC using GGBFS and determine the acceptable range of these parameters. By conducting experiments, the range of critical parameters can be narrowed down, and specific parameter values can be obtained based on the study of hardened properties.