Interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash

Shizhe Zhang; Shan He; Bahman Ghiassi; Klaas van Breugel; Guang Ye

doi:10.1016/j.cemconres.2023.107308

Interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash

Shizhe Zhang^*, Shan He, Bahman Ghiassi, Klaas van Breugel, Guang Ye^*

^*Corresponding author for this work

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

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Abstract

This paper presents an experimental study on the interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash (AASF) pastes. Three interface bonding properties (i.e., the chemical bonding energy G_d, the initial frictional bond strength τ₀, and slip-hardening behavior) were determined using single-fiber pullout tests. The microstructure and chemical composition of the reaction products in the fiber/matrix interfacial transition zone (ITZ) and the nearby matrix were also characterized to reveal the influence of PVA fiber to its surrounding matrix. It is found that G_d increases primarily with increasing Ca/(Si+Al) ratio of C-(N-)A-S-H gel. Unlike that in cementitious materials, the inclusion of PVA fiber in AASF pastes promotes the formation of a high-Ca C-(N-)A-S-H phase rather than crystalline portlandite near the fiber surface. This study provides useful guidance for tailoring the interface bonding properties of AASF and also the development of high-performance composites such as strain-hardening geopolymer composites.

Original language	English
Article number	107308
Number of pages	12
Journal	Cement and Concrete Research
Volume	173
Early online date	24 Aug 2023
DOIs	https://doi.org/10.1016/j.cemconres.2023.107308
Publication status	Published - Nov 2023

Bibliographical note

Funding Information:
This research was carried out in Microlab, Delft University of Technology and was financially supported by the Netherlands Organisation for Scientific Research (NWO), Grant No. 729.001.013 and National Natural Science Foundation of China (NSFC), Grant No. 5151101050. The authors would like to thank Dr. Lupita Sierra-Beltran, Dr. Jishen Qiu, and Dr. Haoliang Wu for the discussion on the single-fiber pullout tests set-up, Prof. Victor C. Li, Prof. Erik Schlangen, and Dr. Jorge Dolado for the discussion on interface properties, and Paul Veerman for helping with the set-up of single-fiber pullout tests. Additionally, the authors wish to acknowledge Kuraray Co. Ltd. Japan for supplying the PVA fiber.

Publisher Copyright:
© 2023 The Authors

Keywords

Alkali-activation
Bonding
Fiber pullout
Fly ash
Interface
PVA
Slag

ASJC Scopus subject areas

Building and Construction
General Materials Science

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Cite this

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title = "Interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash",

abstract = "This paper presents an experimental study on the interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash (AASF) pastes. Three interface bonding properties (i.e., the chemical bonding energy Gd, the initial frictional bond strength τ0, and slip-hardening behavior) were determined using single-fiber pullout tests. The microstructure and chemical composition of the reaction products in the fiber/matrix interfacial transition zone (ITZ) and the nearby matrix were also characterized to reveal the influence of PVA fiber to its surrounding matrix. It is found that Gd increases primarily with increasing Ca/(Si+Al) ratio of C-(N-)A-S-H gel. Unlike that in cementitious materials, the inclusion of PVA fiber in AASF pastes promotes the formation of a high-Ca C-(N-)A-S-H phase rather than crystalline portlandite near the fiber surface. This study provides useful guidance for tailoring the interface bonding properties of AASF and also the development of high-performance composites such as strain-hardening geopolymer composites.",

keywords = "Alkali-activation, Bonding, Fiber pullout, Fly ash, Interface, PVA, Slag",

author = "Shizhe Zhang and Shan He and Bahman Ghiassi and {van Breugel}, Klaas and Guang Ye",

note = "Funding Information: This research was carried out in Microlab, Delft University of Technology and was financially supported by the Netherlands Organisation for Scientific Research (NWO), Grant No. 729.001.013 and National Natural Science Foundation of China (NSFC), Grant No. 5151101050. The authors would like to thank Dr. Lupita Sierra-Beltran, Dr. Jishen Qiu, and Dr. Haoliang Wu for the discussion on the single-fiber pullout tests set-up, Prof. Victor C. Li, Prof. Erik Schlangen, and Dr. Jorge Dolado for the discussion on interface properties, and Paul Veerman for helping with the set-up of single-fiber pullout tests. Additionally, the authors wish to acknowledge Kuraray Co. Ltd. Japan for supplying the PVA fiber. Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2023",

month = nov,

doi = "10.1016/j.cemconres.2023.107308",

language = "English",

volume = "173",

journal = "Cement and Concrete Research",

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T1 - Interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash

AU - Zhang, Shizhe

AU - He, Shan

AU - Ghiassi, Bahman

AU - van Breugel, Klaas

AU - Ye, Guang

N1 - Funding Information: This research was carried out in Microlab, Delft University of Technology and was financially supported by the Netherlands Organisation for Scientific Research (NWO), Grant No. 729.001.013 and National Natural Science Foundation of China (NSFC), Grant No. 5151101050. The authors would like to thank Dr. Lupita Sierra-Beltran, Dr. Jishen Qiu, and Dr. Haoliang Wu for the discussion on the single-fiber pullout tests set-up, Prof. Victor C. Li, Prof. Erik Schlangen, and Dr. Jorge Dolado for the discussion on interface properties, and Paul Veerman for helping with the set-up of single-fiber pullout tests. Additionally, the authors wish to acknowledge Kuraray Co. Ltd. Japan for supplying the PVA fiber. Publisher Copyright: © 2023 The Authors

PY - 2023/11

Y1 - 2023/11

N2 - This paper presents an experimental study on the interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash (AASF) pastes. Three interface bonding properties (i.e., the chemical bonding energy Gd, the initial frictional bond strength τ0, and slip-hardening behavior) were determined using single-fiber pullout tests. The microstructure and chemical composition of the reaction products in the fiber/matrix interfacial transition zone (ITZ) and the nearby matrix were also characterized to reveal the influence of PVA fiber to its surrounding matrix. It is found that Gd increases primarily with increasing Ca/(Si+Al) ratio of C-(N-)A-S-H gel. Unlike that in cementitious materials, the inclusion of PVA fiber in AASF pastes promotes the formation of a high-Ca C-(N-)A-S-H phase rather than crystalline portlandite near the fiber surface. This study provides useful guidance for tailoring the interface bonding properties of AASF and also the development of high-performance composites such as strain-hardening geopolymer composites.

AB - This paper presents an experimental study on the interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash (AASF) pastes. Three interface bonding properties (i.e., the chemical bonding energy Gd, the initial frictional bond strength τ0, and slip-hardening behavior) were determined using single-fiber pullout tests. The microstructure and chemical composition of the reaction products in the fiber/matrix interfacial transition zone (ITZ) and the nearby matrix were also characterized to reveal the influence of PVA fiber to its surrounding matrix. It is found that Gd increases primarily with increasing Ca/(Si+Al) ratio of C-(N-)A-S-H gel. Unlike that in cementitious materials, the inclusion of PVA fiber in AASF pastes promotes the formation of a high-Ca C-(N-)A-S-H phase rather than crystalline portlandite near the fiber surface. This study provides useful guidance for tailoring the interface bonding properties of AASF and also the development of high-performance composites such as strain-hardening geopolymer composites.

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KW - Fly ash

KW - Interface

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KW - Slag

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DO - 10.1016/j.cemconres.2023.107308

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VL - 173

JO - Cement and Concrete Research

JF - Cement and Concrete Research

M1 - 107308

ER -

Interface bonding properties of polyvinyl alcohol (PVA) fiber in alkali-activated slag/fly ash

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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