Journal article
Performance of Calcium Aluminate Cementitious Materials in the Presence of Sodium Chloride
Journal of materials in civil engineering, v 32(10)
01 Oct 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This study investigates the performance of two cementitious systems exposed to sodium chloride solution and thermal cycling. The two systems consisting of an ordinary portland cement (OPC) and a calcium aluminate cement (CAC). Several experimental techniques were conducted to evaluate the performance of OPC and CAC pastes exposed to different concentrations of sodium chloride (NaCl) solution and thermal cycling. X-ray powder diffraction was used to study the hydration products. Low-temperature differential scanning calorimetry was used to detect phase changes and study potential chemical interactions between pastes and NaCl solutions. A longitudinal guarded comparative calorimeter equipped with acoustic emission was used to detect phase changes and damage development in pastes saturated with NaCl solutions during thermal cycling. Unlike OPC pastes that can chemically interact with NaCl solutions to form a destructive chemical phase change at temperatures range between -5 degrees C and 8 degrees C, CAC pastes showed no chemical interactions with NaCl solutions, mainly due to possessing different chemistry than the OPC. As a result, no damage associated with the chemical phase change was observed in CAC pastes, indicating that the CAC is more chemically resistant to NaCl damage than OPC. (c) 2020 American Society of Civil Engineers.
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Details
- Title
- Performance of Calcium Aluminate Cementitious Materials in the Presence of Sodium Chloride
- Creators
- Fadi Althoey - Najran UniversityYaghoob Farnam - Chestnut Hill College
- Publication Details
- Journal of materials in civil engineering, v 32(10)
- Publisher
- Asce-Amer Soc Civil Engineers
- Number of pages
- 10
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000587482500002
- Scopus ID
- 2-s2.0-85089561305
- Other Identifier
- 991019167658304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Construction & Building Technology
- Engineering, Civil
- Materials Science, Multidisciplinary