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Porosimetric features of calcium sulfoaluminate and Portland cement pastes: testing protocols and data analysis

Porosimetric features of calcium sulfoaluminate and Portland cement pastes: testing protocols and... AbstractInvestigating pore structure of calcium sulfoaluminate cement paste is significantly important to understand the hydration process of cement, to develop the models that describe the cement paste microstructure, and eventually to improve the properties of the cement paste such as shrinkage compensation and self-stressing. The history, manufacture, and hydration of calcium sulfoaluminate cement are investigated. Two most common experimental protocols, nitrogen sorption and mercury intrusion porosimetry, are systematically summarized with required theories for analysis of porosimetric features of the cement pastes. Both calcium sulfoaluminate and portland cement pastes were tested with a water-to-cement ratio of 0.4, 0.5, and 0.6 using the two test methods. Since the measurement range of pore diameter by the nitrogen sorption porosimetry is relatively narrow (about 0.3–300 nm), the microporous properties of cement paste can be well determined. The mercury intrusion porosimetry is useful to evaluate the porosimetric features of cement pastes including bulk durability due to the wide measurement range of pore diameter (approximately 3 nm–200 μm). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Structural Integrity and Maintenance Taylor & Francis

Porosimetric features of calcium sulfoaluminate and Portland cement pastes: testing protocols and data analysis

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Porosimetric features of calcium sulfoaluminate and Portland cement pastes: testing protocols and data analysis

Abstract

AbstractInvestigating pore structure of calcium sulfoaluminate cement paste is significantly important to understand the hydration process of cement, to develop the models that describe the cement paste microstructure, and eventually to improve the properties of the cement paste such as shrinkage compensation and self-stressing. The history, manufacture, and hydration of calcium sulfoaluminate cement are investigated. Two most common experimental protocols, nitrogen sorption and mercury...
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Publisher
Taylor & Francis
Copyright
© 2018 Korea Institute for Structural Maintenance and Inspection
ISSN
2470-5322
eISSN
2470-5314
DOI
10.1080/24705314.2018.1426168
Publisher site
See Article on Publisher Site

Abstract

AbstractInvestigating pore structure of calcium sulfoaluminate cement paste is significantly important to understand the hydration process of cement, to develop the models that describe the cement paste microstructure, and eventually to improve the properties of the cement paste such as shrinkage compensation and self-stressing. The history, manufacture, and hydration of calcium sulfoaluminate cement are investigated. Two most common experimental protocols, nitrogen sorption and mercury intrusion porosimetry, are systematically summarized with required theories for analysis of porosimetric features of the cement pastes. Both calcium sulfoaluminate and portland cement pastes were tested with a water-to-cement ratio of 0.4, 0.5, and 0.6 using the two test methods. Since the measurement range of pore diameter by the nitrogen sorption porosimetry is relatively narrow (about 0.3–300 nm), the microporous properties of cement paste can be well determined. The mercury intrusion porosimetry is useful to evaluate the porosimetric features of cement pastes including bulk durability due to the wide measurement range of pore diameter (approximately 3 nm–200 μm).

Journal

Journal of Structural Integrity and Maintenance – Taylor & Francis

Published: Jan 2, 2018

Keywords: Calcium sulfoaluminate cement; mercury intrusion; nitrogen sorption; pore structure; portland cement

References

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