Article ID Journal Published Year Pages File Type
256066 Construction and Building Materials 2016 11 Pages PDF
Abstract

•Small-scale experiments with soundless chemical demolition agents (SCDAs) under cold and moderate temperatures.•Hydration heat formation and expansive pressure development under varying ambient conditions.•Faster and higher peak hydrations and expansive pressures under warmer ambient temperatures.•Linear relationship between ambient temperature, time to peak hydration heat, and onset of significant pressure development.

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.

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Physical Sciences and Engineering Engineering Civil and Structural Engineering
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