Cold and moderate ambient temperatures effects on expansive pressure development in soundless chemical demolition agents

Atteyeh S. Natanzi, Debra F. Laefer, Lorcan Connolly

Research output: Contribution to journalArticlepeer-review

Abstract

This paper explores cool and moderate temperature (2-19 °C) impacts on hydration heat and expansive pressure development in two commercial soundless chemical demolition agents (SCDAs). Experimental results showed (1) product-specific, linear relationships between the ambient temperature and time to peak hydration heat; (2) peak hydration heats to be consistently 1.5 times the ambient temperatures at 10-19°C; outside of this range the factor was greater; (3) a linear relationship between peak hydration heat time and the onset of expansive pressure development; (4) a largely proportional relationship between ambient temperature and volumetric expansion of 1.1-1.4 times the original volume.

Original languageEnglish (US)
Pages (from-to)117-127
Number of pages11
JournalConstruction and Building Materials
Volume110
DOIs
StatePublished - May 1 2016

Keywords

  • Ambient temperature
  • Bristar
  • Dexpan
  • Expansive cement
  • Expansive pressure
  • Heat of hydration
  • Non-expansive demolition agent
  • Soundless chemical demolition agent
  • Volumetric expansion

ASJC Scopus subject areas

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

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