Effect of Mix design parameters on the properties of cementitious composites incorporating volcanic ash and dune sand

Jad Bawab, Hilal El-Hassan, Amr El-Dieb, Jamal Khatib

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

This study examines the properties of cementitious composites incorporating volcanic ash (VA) and dune sand. The effect of five mix design parameters was studied using the Taguchi method. The fresh, mechanical, and durability properties of sixteen mixes were evaluated. To convert the evaluation from single criterion to multi-criteria, a hybrid Taguchi-TOPSIS was employed. Results showed that the optimum composite mix was made with a binder content of 500 kg/m3, a water-to-binder ratio of 0.5, VA replacement of 20%, dune sand replacement of 20%, and SP content of 0.75%. The optimum mix had a flow, final setting time, 28-day compressive strength, volume of permeable voids, and calcium leaching strength retention of 175 mm, 440 min, 50.5 MPa, 11.3%, and 78.8%, respectively. Portlandite, tobermorite, and gismondine were characterized as hydration products, while calcite and dolomite were also detected. This work provides an advanced understanding of the impact of mix design parameters on various properties while optimizing their levels for superior performance.

Original languageEnglish
Article number100258
JournalDevelopments in the Built Environment
Volume16
DOIs
Publication statusPublished - Dec 2023

Keywords

  • Cementitious
  • Dune sand
  • Environment
  • Superplasticizer
  • Sustainability
  • Volcanic ash

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science (miscellaneous)
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

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