Cold and moderate ambient temperatures effects on expansive pressure develop-ment in soundless chemical demolition agents

Title: Cold and moderate ambient temperatures effects on expansive pressure develop-ment in soundless chemical demolition agents
Authors: Natanzi, Atteyeh S.
Laefer, Debra F.
Connolly, Lorcan
Permanent link: http://hdl.handle.net/10197/7567
Date: 1-May-2016
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.
Funding Details: European Research Council
Science Foundation Ireland
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2016 Elsevier
Keywords: Soundless chemical demolition agent;Expansive cement;Ambient temperature;Expansive pressure;Dexpan;Bristar;Non-expansive demolition agent;Heat of hydration;Volumetric expansion
DOI: 10.1016/j.conbuildmat.2016.02.016
Language: en
Status of Item: Not peer reviewed
Appears in Collections:Civil Engineering Research Collection

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