Influence of Cement Type on Resistance to Organic Acids

Thomas Dyer (Lead / Corresponding author)

Research output: Contribution to journalArticle

4 Citations (Scopus)
111 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

Fingerprint

Organic acids
Cements
Acid resistance
Acids
Ointments
Reaction products
Deterioration
Calcium
Salts
Concretes
Scanning

Keywords

  • cement paste
  • durability-related properties
  • Modelling

Cite this

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title = "Influence of Cement Type on Resistance to Organic Acids",
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.",
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Influence of Cement Type on Resistance to Organic Acids. / Dyer, Thomas (Lead / Corresponding author).

In: Magazine of Concrete Research, Vol. 69, No. 4, 12.01.2017, p. 175-200.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of Cement Type on Resistance to Organic Acids

AU - Dyer, Thomas

N1 - The author also wishes to acknowledge the use of the EPSRC-funded National Chemical Database Service hosted by the Royal Society of Chemistry.

PY - 2017/1/12

Y1 - 2017/1/12

N2 - 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.

AB - 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.

KW - cement paste

KW - durability-related properties

KW - Modelling

U2 - 10.1680/jmacr.16.00271

DO - 10.1680/jmacr.16.00271

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JF - Magazine of Concrete Research

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