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Synchronous Monitoring of Cement Hydration and Polymer Film Formation Using 1H-Time-Domain-NMR with T 2 Time-Weighted
Daniel Jansen1, Dominique Ectors1, Xiangming Kong2
1Mineralogy, GeoZentrum Nordbayern, Schlossgarten 5a, 91054 Erlangen, Germany.
ACS Omega
|March 29, 2021
Summary
This study reveals how latex film formation and cement hardening interact over time. Using 1H-time-domain-NMR, researchers simultaneously monitored these processes for the first time, offering new insights into cementitious systems.
Area of Science:
- Materials Science
- Chemistry
- Civil Engineering
Background:
- The interaction between latex and cement is complex and not fully understood.
- Simultaneous monitoring of cement hardening and latex film formation presents significant challenges.
- Non-destructive quantitative analysis of latex film formation is currently limited.
Purpose of the Study:
- To investigate the temporal changes in cement hardening and latex film formation.
- To simultaneously monitor the hydration process of cement and the film formation of latex.
- To establish a novel method for non-destructive quantitative analysis of latex film formation in cementitious systems.
Main Methods:
- Simultaneous monitoring of latex film formation and cement phase development using 1H-time-domain-NMR.
- Validation of NMR results with in situ X-ray diffraction, X-ray fluorescence (Rietveld analysis), and confocal laser scanning microscopy.
Main Results:
- Successfully achieved simultaneous monitoring of latex film formation and cement hydration using 1H-time-domain-NMR.
- Provided new quantitative data on the temporal evolution of both processes.
- Validated the findings through established analytical techniques, confirming the reliability of the NMR method.
Conclusions:
- 1H-time-domain-NMR is a powerful tool for simultaneously studying latex film formation and cement hydration.
- This research advances the understanding of latex-cement interactions.
- The developed method offers a non-destructive approach for analyzing complex cementitious systems.
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