Early-age hydration and shrinkage of cement paste with coir fibers as studied by Nuclear Magnetic Resonance

XiaoXiao Zhang; Yan Liang Ji; Leo Pel; Zhen Ping Sun; David Smeulders

doi:10.1016/j.conbuildmat.2022.127460

Early-age hydration and shrinkage of cement paste with coir fibers as studied by Nuclear Magnetic Resonance

XiaoXiao Zhang
, Yan Liang Ji
, Leo Pel (Corresponding author)
, Zhen Ping Sun
, David Smeulders

Research output: Contribution to journal › Article › Academic › peer-review

21 Citations (Scopus)

198 Downloads (Pure)

Abstract

Nuclear Magnetic Resonance (NMR) is used to study the early-age hydration as well as autogenous shrinkage and drying shrinkage of cement paste with the addition of coir fibers. The dosage and water content of coir fibers are evaluated. The results show that added coir fibers have a negligible influence on cement hydration kinetics. However, the internal curing effect of saturated coir fibers and water competition induced by dry fibers are visualized. As the saturated fiber content increases, autogenous shrinkage and drying shrinkage decrease due to the internal curing and reinforcing effects of fibers. Dry fibers generate more autogenous shrinkage but less drying shrinkage than saturated fibers of the same dosage due to the introduced water competition. NMR is proven able to track water transportation and shrinkage in cement composites.

Original language	English
Article number	127460
Number of pages	10
Journal	Construction and Building Materials
Volume	336
DOIs	https://doi.org/10.1016/j.conbuildmat.2022.127460
Publication status	Published - 20 Jun 2022

Bibliographical note

Funding Information:
This research is supported by China Scholarship Council (Grant No. 201708410130) and Eindhoven University of Technology. Part of this work is carried out in the Darcy Center for porous media research in Eindhoven University of Technology. Furthermore, thanks are given to J.H.J. Dalderop and J.J. Noijen for their help in the lab work.

Publisher Copyright:
© 2022 The Author(s)

Funding

This research is supported by China Scholarship Council (Grant No. 201708410130) and Eindhoven University of Technology. Part of this work is carried out in the Darcy Center for porous media research in Eindhoven University of Technology. Furthermore, thanks are given to J.H.J. Dalderop and J.J. Noijen for their help in the lab work.

Keywords

Cement hydration
Coir fibers
NMR
Pore size distribution
Shrinkage

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10.1016/j.conbuildmat.2022.127460

1-s2.0-S0950061822011370-mainFinal published version, 3.42 MBLicence: CC BY

Cite this

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title = "Early-age hydration and shrinkage of cement paste with coir fibers as studied by Nuclear Magnetic Resonance",

abstract = "Nuclear Magnetic Resonance (NMR) is used to study the early-age hydration as well as autogenous shrinkage and drying shrinkage of cement paste with the addition of coir fibers. The dosage and water content of coir fibers are evaluated. The results show that added coir fibers have a negligible influence on cement hydration kinetics. However, the internal curing effect of saturated coir fibers and water competition induced by dry fibers are visualized. As the saturated fiber content increases, autogenous shrinkage and drying shrinkage decrease due to the internal curing and reinforcing effects of fibers. Dry fibers generate more autogenous shrinkage but less drying shrinkage than saturated fibers of the same dosage due to the introduced water competition. NMR is proven able to track water transportation and shrinkage in cement composites.",

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AU - Zhang, XiaoXiao

AU - Ji, Yan Liang

AU - Pel, Leo

AU - Sun, Zhen Ping

AU - Smeulders, David

N1 - Funding Information: This research is supported by China Scholarship Council (Grant No. 201708410130) and Eindhoven University of Technology. Part of this work is carried out in the Darcy Center for porous media research in Eindhoven University of Technology. Furthermore, thanks are given to J.H.J. Dalderop and J.J. Noijen for their help in the lab work. Publisher Copyright: © 2022 The Author(s)

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Y1 - 2022/6/20

N2 - Nuclear Magnetic Resonance (NMR) is used to study the early-age hydration as well as autogenous shrinkage and drying shrinkage of cement paste with the addition of coir fibers. The dosage and water content of coir fibers are evaluated. The results show that added coir fibers have a negligible influence on cement hydration kinetics. However, the internal curing effect of saturated coir fibers and water competition induced by dry fibers are visualized. As the saturated fiber content increases, autogenous shrinkage and drying shrinkage decrease due to the internal curing and reinforcing effects of fibers. Dry fibers generate more autogenous shrinkage but less drying shrinkage than saturated fibers of the same dosage due to the introduced water competition. NMR is proven able to track water transportation and shrinkage in cement composites.

AB - Nuclear Magnetic Resonance (NMR) is used to study the early-age hydration as well as autogenous shrinkage and drying shrinkage of cement paste with the addition of coir fibers. The dosage and water content of coir fibers are evaluated. The results show that added coir fibers have a negligible influence on cement hydration kinetics. However, the internal curing effect of saturated coir fibers and water competition induced by dry fibers are visualized. As the saturated fiber content increases, autogenous shrinkage and drying shrinkage decrease due to the internal curing and reinforcing effects of fibers. Dry fibers generate more autogenous shrinkage but less drying shrinkage than saturated fibers of the same dosage due to the introduced water competition. NMR is proven able to track water transportation and shrinkage in cement composites.

KW - Cement hydration

KW - Coir fibers

KW - NMR

KW - Pore size distribution

KW - Shrinkage

UR - https://www.scopus.com/pages/publications/85129233408

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JF - Construction and Building Materials

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ER -

Early-age hydration and shrinkage of cement paste with coir fibers as studied by Nuclear Magnetic Resonance

Abstract

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Keywords

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