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Effects of accelerated carbonation on physical properties of mortar

  • Kipyo You
  • , Hyoseok Jeong
  • , Wongil Hyung*
  • *Corresponding author for this work
  • Korea Occupational Safety and Health Agency
  • Yeungnam University

Research output: Contribution to journalJournal articlepeer-review

Abstract

Carbonation has been considered as a deterioration factor in concrete because it reduces the pH of concrete from between 12.6 and 13.5 to about 9. However, carbonation can have some positive consequences. Because CaCO 3 occupies a greater volume than Ca(OH) 2 , which it replaces, the porosity of carbonated concrete decreases. On the other hand, carbonation turns bound chloride into free chloride. The results verify that carbonation has some benefcial effects by enhancing compressive strength and volume safety and reducing permeability and chloride ion penetration. In general, carbonation enhances concrete performance.

Original languageEnglish
Pages (from-to)217-221
Number of pages5
JournalJournal of Asian Architecture and Building Engineering
Volume13
Issue number1
DOIs
StatePublished - 2014

Keywords

  • Carbonation
  • Deterioration factor
  • Permeability

Quacquarelli Symonds(QS) Subject Topics

  • Engineering - Civil & Structural
  • Communication & Media Studies
  • Architecture

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