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29Si MAS-NMR hydration and compressive strength study in cement paste

โœ Scribed by G. Parry-Jones; A.J. Al-Tayyib; S.U. Al-Dulaijan; A.I. Al-Mana

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
349 KB
Volume
19
Category
Article
ISSN
0008-8846

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โœฆ Synopsis

29Si MAS-NMR measurements of cement have been used to follow the hydration process in cement pastes. Samples prepared using a w/c ratio of 0.45 and Type I cement have been cured at temperatures over the range 20 to 55ยฐC with curing times of 3 to 28 days. Compressive strength values for samples subjected to the same time/temperature curing regime were also obtained. The compressive strength is found to show a linear dependence on hydration as characterized in terms of the NMR Qo, Q1 and Q2 silicate polymerization states. Solid state 29Si NMR measurements appear promising as a means of monitoring cement/concrete strength.

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