Cold and moderate ambient temperatures effects on expansive pressure develop-ment in soundless chemical demolition agents
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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 | Online since: | 2018-05-01T01:00:11Z | 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 | Journal: | Construction and Building Materials | Volume: | 110 | Start page: | 117 | End page: | 127 | 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Heat of hydration; Volumetric expansion | DOI: | 10.1016/j.conbuildmat.2016.02.016 | Language: | en | Status of Item: | Not peer reviewed | This item is made available under a Creative Commons License: | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
Appears in Collections: | Civil Engineering Research Collection |
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