Influence of Cement Type on Resistance to Organic Acids

Thomas Dyer (Lead / Corresponding author)

Research output: Contribution to journalArticle

5 Citations (Scopus)
211 Downloads (Pure)

Abstract

Resistance to attack by acids is an important characteristic in a number of concrete applications. Deterioration can occur by three mechanisms: acidolysis, complexolysis and precipitation of expansive reaction products. Generally, where acidolysis is the main mechanism, a low calcium cement is likely to impart enhanced resistance. However, where other mechanisms may also be effective, the approach to selecting cements for acid resistance is less clear. This paper examines the effect of four acids on cement pastes made from three different cement types using measurements of mass loss, chemical and mineralogical analysis and micro CT scanning. In addition, geochemical modelling techniques are employed to further explore the role salt precipitation and complexolysis are likely to play.
Original languageEnglish
Pages (from-to)175-200
Number of pages26
JournalMagazine of Concrete Research
Volume69
Issue number4
Early online date11 Nov 2016
DOIs
Publication statusPublished - 12 Jan 2017

Keywords

  • cement paste
  • durability-related properties
  • Modelling

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