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Hydration Dynamics of Portland Cement Studied by Magnetic Resonance

She, An-Ming / Yao, Wu / Yuan, Wan-Cheng

Hydration dynamics of Portland cement was investigated by low field NMR, a technique with advantage of continuous and nondestructure monitor. The transverse relaxation time, T₂, and signals intensity arising from the physically bound water in paste were measured. Their evolution with the hydration time could be used well to describe the hydration dynamics. Three successive periods, comprising of initial period, accelerated period and steady period, were defined according the different rate of change. The reactions and mechanism for individual stage were disscussed based on the cement chemistry theory.

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Hydration Dynamics of Portland Cement Studied by Magnetic Resonance

She, An-Ming / Yao, Wu / Yuan, Wan-Cheng

Hydration dynamics of Portland cement was investigated by low field NMR, a technique with advantage of continuous and nondestructure monitor. The transverse relaxation time, T₂, and signals intensity arising from the physically bound water in paste were measured. Their evolution with the hydration time could be used well to describe the hydration dynamics. Three successive periods, comprising of initial period, accelerated period and steady period, were defined according the different rate of change. The reactions and mechanism for individual stage were disscussed based on the cement chemistry theory.

Hydration Dynamics of Portland Cement Studied by Magnetic Resonance

She, An-Ming / Yao, Wu / Yuan, Wan-Cheng

Hydration dynamics of Portland cement was investigated by low field NMR, a technique with advantage of continuous and nondestructure monitor. The transverse relaxation time, T₂, and signals intensity arising from the physically bound water in paste were measured. Their evolution with the hydration time could be used well to describe the hydration dynamics. Three successive periods, comprising of initial period, accelerated period and steady period, were defined according the different rate of change. The reactions and mechanism for individual stage were disscussed based on the cement chemistry theory.

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Title:

Hydration Dynamics of Portland Cement Studied by Magnetic Resonance

Contributors:

She, An-Ming (author) / Yao, Wu (author) / Yuan, Wan-Cheng (author)

Published in:

Frontiers of Green Building, Materials and Civil Engineering II, GBMCE, International Conference on Green Building, Materials and Civil Engineering, 2 ; 509-512

Applied Mechanics and Materials ; 193-194

Publication date:

2012

Size:

4 Seiten

ISSN:

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.193-194.509

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Zement , Relaxationszeit , Hydratation , Portlandzement , gebundenes Wasser , magnetische Resonanz , Hydratationsdauer

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