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dc.contributor.authorNatanzi, Atteyeh S.-
dc.contributor.authorLaefer, Debra F.-
dc.contributor.authorKakali, Glikeria-
dc.contributor.authorZolanvari, S.M. Iman-
dc.identifier.citationNatanzi, A.S., Laefer, D.F., Kakali, G., Zolanvari, S.M.I. (2019). Temperature-Induced Chemical Changes in Soundless Chemical Demolition Agents. Journal of Materials in Civil Engineering, 31(7), 10.1061/(ASCE)MT.1943-5533.0002653en
dc.description.abstractThis paper explores the relationship between ambient temperature, calcium oxide (CaO) hydration, and calcium carbonate (CaCO3) generation in cold and moderate ambient temperatures (2°C-19°C). A total of 22 samples from 2 commercial Soundless Chemical Demolition Agents (SCDAs) were tested in 36 mm diameter, 170 mm long steel pipes. The raw powder and materials resulting from hydration were subjected to X-ray Diffraction analysis, Derivative Thermogravimetric Analysis, and Thermogravimetry analysis. Raw and hydrated specimens proved chemically distinctive. Experimental results showed: (1) the unconfined portions of hydrated specimens contained more CaCO3 due to carbonation of Ca(OH)2, where confined portions had higher Ca(OH)2 concentrations; (2) all materials tested at 19°C ambient temperatures had Ca(OH)2 concentrations nearly 10% greater than those tested at 2°C; and (3) the higher Ca(OH)2 concentrations formed at 19°C generated 350% greater expansive pressure than that which formed at 2°C.en
dc.description.sponsorshipScience Foundation Ireland [12/ERC/12534]en
dc.subjectSoundless Chemical Demolition Agentsen
dc.subjectThermogravimetry analysisen
dc.subjectCalcium Hydroxideen
dc.subjectX-Ray Diffractionen
dc.titleTemperature-induced Chemical Changes in Soundless Chemical Demolition Agentsen
prism.publicationNameJournal of Materials in Civil Engineeringen
Appears in Collections:Debra Laefer's Collection

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