Utilization of Alkali-Activated Glass Manufacturing Waste in the Improvement of Cohesive Soils

MAHMUTLUOĞLU B., BAĞRIAÇIK B.

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, vol.47, no.10, pp.12765-12778, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 10
  • Publication Date: 2022
  • Doi Number: 10.1007/s13369-022-06621-y
  • Journal Name: ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Metadex, Pollution Abstracts, zbMATH, Civil Engineering Abstracts
  • Page Numbers: pp.12765-12778
  • Keywords: Glass manufacturing waste, Geopolymer, Model test, Waste disposal, Soil improvement, CALCIUM FLY-ASH, RICE HUSK ASH, MECHANICAL-PROPERTIES, SANDY SOILS, CLAYEY SOIL, MARINE CLAY, GEOPOLYMER, CEMENT, STABILIZATION, DURABILITY
  • Çukurova University Affiliated: Yes

Abstract

Recently, in geotechnical engineering, waste utilization and management have become immensely important in terms of reducing the ratios of environmentally harmful and relatively expensive chemical soil strengthening additives. Glass manufacturing waste (GMW), among the above-stated waste materials, comes to existence as the mineralogical part required to produce glass is separated from the mined material. GMW leads to serious environmental pollution incessantly. This study aims to investigate the effects of GMW to the bearing capacity and time-dependent consolidation settlements of clayey soils (CS) in an environmentally friendly approach. In this regard, GMW, which has not yet been considered in the relevant literature, was activated with KOH, NaOH and CaO alkali activators to form geopolymer mortars. Large-scale model experiments were performed on geopolymer-CS mixtures and up to 7.35 times bearing capacity increments along with 6.90 times settlement reductions were reached compared to unimproved CS. Optimum GMW ratio was found as 25% and CaO was determined to be the most ideal alkali activator. Curing temperature and durations were examined and it was deduced that both affected the results significantly. Results were compared to those of cement and remarkably close bearing capacity and settlement improvements were achieved in an environmentally friendly approach.