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

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

doi:10.1016/j.conbuildmat.2016.02.016

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 journal › Article › peer-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 language	English (US)
Pages (from-to)	117-127
Number of pages	11
Journal	Construction and Building Materials
Volume	110
DOIs	https://doi.org/10.1016/j.conbuildmat.2016.02.016
State	Published - 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
General Materials Science

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10.1016/j.conbuildmat.2016.02.016

Cite this

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title = "Cold and moderate ambient temperatures effects on expansive pressure development in soundless chemical demolition agents",

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.",

keywords = "Ambient temperature, Bristar, Dexpan, Expansive cement, Expansive pressure, Heat of hydration, Non-expansive demolition agent, Soundless chemical demolition agent, Volumetric expansion",

author = "Natanzi, {Atteyeh S.} and Laefer, {Debra F.} and Lorcan Connolly",

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doi = "10.1016/j.conbuildmat.2016.02.016",

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T1 - Cold and moderate ambient temperatures effects on expansive pressure development in soundless chemical demolition agents

AU - Natanzi, Atteyeh S.

AU - Laefer, Debra F.

AU - Connolly, Lorcan

PY - 2016/5/1

Y1 - 2016/5/1

N2 - 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.

AB - 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.

KW - Ambient temperature

KW - Bristar

KW - Dexpan

KW - Expansive cement

KW - Expansive pressure

KW - Heat of hydration

KW - Non-expansive demolition agent

KW - Soundless chemical demolition agent

KW - Volumetric expansion

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VL - 110

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EP - 127

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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