Kinetics of mixing-water repartition in UHPFRC paste and its effect on hydration and microstructural development

The hydration of an ultra-high performance fibre reinforced concrete (UHPFRC) paste with a water to cement ratio of 0.18 was followed by proton nuclear magnetic resonance (1H NMR) alongside more classical techniques for hydration kinetics, and microstructural analysis. The states of water were quant...

Full description

Saved in:
Bibliographic Details
Published inCement and concrete research Vol. 124; p. 105784
Main Authors Kazemi-Kamyab, Hadi, Muller, Arnaud Charles Albert, Denarié, Emmanuel, Brühwiler, Eugen, Scrivener, Karen
Format Journal Article
LanguageEnglish
Published Elmsford Elsevier Ltd 01.10.2019
Elsevier BV
Subjects
1HNMR
Cement reinforcements
Fiber reinforced concretes
Hydrates
Hydration
Hydration degree
Interlayers
Kinetics
Microstructural analysis
MIP
NMR
Nuclear magnetic resonance
Reinforced concrete
RPC
UHPC
UHPFRC
Water-cement ratio
XRD
UHPC
RPC
MIP
Hydration degree
1HNMR
XRD
UHPFRC
Online AccessGet full text

Cover

More Information
Summary:The hydration of an ultra-high performance fibre reinforced concrete (UHPFRC) paste with a water to cement ratio of 0.18 was followed by proton nuclear magnetic resonance (1H NMR) alongside more classical techniques for hydration kinetics, and microstructural analysis. The states of water were quantified at different times by following the repartition of the “mixing water” after casting into “capillary water, gel water, CSH interlayer water and solid water” as hydration takes place. It was found that the capillary water is quickly depleted, and subsequently hydration continues with the consumption of the gel water. Overall the material becomes extremely self-desiccated with all water, bound in crystalline hydrates and the interlayer of C-S-H.
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2019.105784