Strength studies on Geopolymer Concrete produced by Recycled Coarse Aggregate and Quarry Stone Dust as Fine Aggregate

Abstract

Geopolymer concrete is one of the trending techniques adopted to replace the conventional binder by any alumino-silicate material like fly ash or GGBFS. Approximately Geoploymer concrete are as productive as conventional concrete. But the key pro of Geopolymer concrete utility is to recycle concrete waste and demolition waste are transformed into coarse aggregate, which reflects in the environment and economic benefits. The natural fine aggregate (NFA) is replaced by the residue quarry fines obtained from the crushed quarry rock often termed Quarry dust or Quarry stone dust (QSD) by proportions 0%, 20%, 40%, 60%, 80%, and 100%. In this research study, fly ash is utilized as the binding material activated by the di-solution of NaOH and Na2SiO3 collectively to initiate a chemical reaction to attain productive strength. From the overview of previous papers literature, the geopolymer concrete is not having any proper mix design procedures, Therefore the trial and error method adopted. This research is conducted to study over results of the practical approach on geopolymer concrete composed with 40% of recycled coarse aggregate (RCA) in place of Natural coarse aggregate and varying different percentages of QSD in the place of Natural fine aggregate.

Predicting the strength of concrete made with stone dust and nylon fiber using artificial neural network

“…Meanwhile, in case of splitting tensile strength, Rao (2021) focused on the behaviour of concrete having stone dust and promulgated that tensile strength increases significantly for rising incorporation of the dust. The experimental outcomes of the research of Alok et al. (2020) , and Prasanth et al.…”