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Accepted (AM)Open Access (License Unspecified), Open
Journal article
The influence of calcium chloride deicing salt on phase changes and damage development in cementitious materials
Cement & concrete composites, v 64
Nov 2015
PMID: 26692655
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The conventional CaCl2–H2O phase diagram is often used to describe how calcium chloride behaves when it is used on a concrete pavement undergoing freeze-thaw damage. However, the chemistry of the concrete can alter the appropriateness of using the CaCl2–H2O phase diagram. This study shows that the Ca(OH)2 present in a hydrated portland cement can interact with CaCl2 solution creating a behavior that is similar to that observed in isoplethal sections of a ternary phase diagram for a Ca(OH)2–CaCl2–H2O system. As such, it is suggested that such isoplethal sections provide a reasonable model that can be used to describe the behavior of concrete exposed to CaCl2 solution as the temperature changes. Specifically, the Ca(OH)2 can react with CaCl2 and H2O resulting in the formation of calcium oxychloride. The formation of the calcium oxychloride is expansive and can produce damage in concrete at temperatures above freezing. Its formation can also cause a significant decrease in fluid ingress into concrete. For solutions with CaCl2 concentrations greater than about 11.3% (by mass), it is found that calcium oxychloride forms rapidly and is stable at room temperature (23 °C).
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Details
- Title
- The influence of calcium chloride deicing salt on phase changes and damage development in cementitious materials
- Creators
- Yaghoob Farnam - Purdue University West LafayetteSarah Dick - Purdue University West LafayetteAndrew Wiese - Purdue University West LafayetteJeffrey Davis - Material Measurement LaboratoryDale Bentz - National Institute of Standards and TechnologyJason Weiss - Purdue University West Lafayette
- Publication Details
- Cement & concrete composites, v 64
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000364882800001
- Scopus ID
- 2-s2.0-84925437713
- Other Identifier
- 991020836472704721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Construction & Building Technology
- Materials Science, Composites