Journal
CEMENT AND CONCRETE RESEARCH
Volume 135, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2020.106095
Keywords
NMR relaxation; Phase assemblage; Crystal structure; Hydration products
Funding
- Nanocem Consortium
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Different solid phases, important to cement paste hydration, are investigated with low-field benchtop H-1 nuclear magnetic resonance (NMR). A combination of the well-established quadrature echo pulse sequence with variable pulse gap together with a T-1 saturation recovery quadrature echo pulse sequence is used. The results illustrate the diversity in the H-1 NMR relaxation behaviour of solid phases that prospects the differentiation in more complex materials. We propose a procedure to obtain quantified values of the solid compounds using these unique relaxation responses of solids, called finger print, and apply this technique to well-hydrated white and ordinary Portland cement paste. Based on the results, needs and ways for future improvements are discussed.
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