Fine aggregate substitution by granular activated carbon can improve physical and mechanical properties of cement mortars

Ismael Justo-Reinoso, Wil V. Srubar, Alejandro Caicedo-Ramirez, Mark T. Hernandez

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Porosity and strength responses that result from the substitution of fine sand aggregate with similarly sized granular activated carbon (GAC) particles, were studied in cements commonly used in North America. In addition to changes in density and mechanical properties, pore structure responses were analyzed using mercury intrusion porosimetry (MIP). Increases in both compressive and tensile strength resulted from GAC incorporation, where sand replacement was 2% by mass or lower; porosity and critical pore entry diameter also decreased near this range (<1%). Results suggest that bituminous GAC incorporation into cementitious materials may have beneficial effects within specific sizes and mass substitution ranges.

Original languageEnglish
Pages (from-to)750-759
Number of pages10
JournalConstruction and Building Materials
Volume164
Early online date8 Jan 2018
DOIs
Publication statusPublished - 10 Mar 2018

Keywords

  • Activated carbon
  • Cement mortar
  • Compressive strength
  • Lightweight aggregate
  • Mercury intrusion porosimetry
  • Sustainable development
  • Tensile strength

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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