A new insight into the mode of action between cement containing montmorillonite and polycarboxylate superplasticizer

Shengnan Sha; Lei Lei; Yihan Ma; Dengwu Jiao; Zhiqiang Xiao; Caijun Shi

doi:10.1080/21650373.2022.2125098

A new insight into the mode of action between cement containing montmorillonite and polycarboxylate superplasticizer

Shengnan Sha
, Lei Lei^*
, Yihan Ma
, Dengwu Jiao
, Zhiqiang Xiao
, Caijun Shi^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

11 Citations (Scopus)

Abstract

In this study, a PCE polymer was synthesized by copolymerizing isopentenyl polyoxyethylene ether (TPEG) with trans-2-butenedioic acid (FA). Thereafter, the dispersing effect of the resulting PCE polymer was evaluated via spread flow tests in cement pastes containing varying amounts of montmorillonite (MMT). The ultimate objective of this study was to investigate the mode of action between PCE polymer and MMT in cement paste and thus provide strategies to minimize the negative impact of MMT on PCE efficiency. The adsorbed amount of the PCE polymer linearly increased with the increasing dosage of MMT, whereas the spread flow of cement pastes linearly decreased with the increasing dosage of MMT. X-ray diffraction (XRD) results revealed that PCE/MMT ratio was critical in the sorption process, where electrostatic attraction played a significant role at low PCE/MMT ratios, whereas side chain intercalation dominated at high PCE/MMT ratios. The reduction in flowability caused by PCE is primarily attributed to the competitive adsorption of MMT in cement paste. © 2022 Informa UK Limited, trading as Taylor & Francis Group

Original language	English
Pages (from-to)	393-402
Number of pages	10
Journal	Journal of Sustainable Cement-Based Materials
Volume	12
Issue number	4
Online published	23 Sept 2022
DOIs	https://doi.org/10.1080/21650373.2022.2125098
Publication status	Published - 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 Informa UK Limited, trading as Taylor & Francis Group.

Funding

Financial supports from the Ministry of Science and Technology under Project No. 2018YFC0705400 are greatly appreciated.

Research Keywords

competitive adsorption
intercalation
montmorillonite
PCE/MMT ratio
Polycarboxylate superplasticizer

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title = "A new insight into the mode of action between cement containing montmorillonite and polycarboxylate superplasticizer",

abstract = "In this study, a PCE polymer was synthesized by copolymerizing isopentenyl polyoxyethylene ether (TPEG) with trans-2-butenedioic acid (FA). Thereafter, the dispersing effect of the resulting PCE polymer was evaluated via spread flow tests in cement pastes containing varying amounts of montmorillonite (MMT). The ultimate objective of this study was to investigate the mode of action between PCE polymer and MMT in cement paste and thus provide strategies to minimize the negative impact of MMT on PCE efficiency. The adsorbed amount of the PCE polymer linearly increased with the increasing dosage of MMT, whereas the spread flow of cement pastes linearly decreased with the increasing dosage of MMT. X-ray diffraction (XRD) results revealed that PCE/MMT ratio was critical in the sorption process, where electrostatic attraction played a significant role at low PCE/MMT ratios, whereas side chain intercalation dominated at high PCE/MMT ratios. The reduction in flowability caused by PCE is primarily attributed to the competitive adsorption of MMT in cement paste. {\textcopyright} 2022 Informa UK Limited, trading as Taylor \& Francis Group",

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author = "Shengnan Sha and Lei Lei and Yihan Ma and Dengwu Jiao and Zhiqiang Xiao and Caijun Shi",

note = "Publisher Copyright: {\textcopyright} 2022 Informa UK Limited, trading as Taylor \& Francis Group.",

year = "2023",

doi = "10.1080/21650373.2022.2125098",

language = "English",

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TY - JOUR

T1 - A new insight into the mode of action between cement containing montmorillonite and polycarboxylate superplasticizer

AU - Sha, Shengnan

AU - Lei, Lei

AU - Ma, Yihan

AU - Jiao, Dengwu

AU - Xiao, Zhiqiang

AU - Shi, Caijun

PY - 2023

Y1 - 2023

N2 - In this study, a PCE polymer was synthesized by copolymerizing isopentenyl polyoxyethylene ether (TPEG) with trans-2-butenedioic acid (FA). Thereafter, the dispersing effect of the resulting PCE polymer was evaluated via spread flow tests in cement pastes containing varying amounts of montmorillonite (MMT). The ultimate objective of this study was to investigate the mode of action between PCE polymer and MMT in cement paste and thus provide strategies to minimize the negative impact of MMT on PCE efficiency. The adsorbed amount of the PCE polymer linearly increased with the increasing dosage of MMT, whereas the spread flow of cement pastes linearly decreased with the increasing dosage of MMT. X-ray diffraction (XRD) results revealed that PCE/MMT ratio was critical in the sorption process, where electrostatic attraction played a significant role at low PCE/MMT ratios, whereas side chain intercalation dominated at high PCE/MMT ratios. The reduction in flowability caused by PCE is primarily attributed to the competitive adsorption of MMT in cement paste. © 2022 Informa UK Limited, trading as Taylor & Francis Group

AB - In this study, a PCE polymer was synthesized by copolymerizing isopentenyl polyoxyethylene ether (TPEG) with trans-2-butenedioic acid (FA). Thereafter, the dispersing effect of the resulting PCE polymer was evaluated via spread flow tests in cement pastes containing varying amounts of montmorillonite (MMT). The ultimate objective of this study was to investigate the mode of action between PCE polymer and MMT in cement paste and thus provide strategies to minimize the negative impact of MMT on PCE efficiency. The adsorbed amount of the PCE polymer linearly increased with the increasing dosage of MMT, whereas the spread flow of cement pastes linearly decreased with the increasing dosage of MMT. X-ray diffraction (XRD) results revealed that PCE/MMT ratio was critical in the sorption process, where electrostatic attraction played a significant role at low PCE/MMT ratios, whereas side chain intercalation dominated at high PCE/MMT ratios. The reduction in flowability caused by PCE is primarily attributed to the competitive adsorption of MMT in cement paste. © 2022 Informa UK Limited, trading as Taylor & Francis Group

KW - competitive adsorption

KW - intercalation

KW - montmorillonite

KW - PCE/MMT ratio

KW - Polycarboxylate superplasticizer

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U2 - 10.1080/21650373.2022.2125098

DO - 10.1080/21650373.2022.2125098

M3 - RGC 21 - Publication in refereed journal

AN - SCOPUS:85138733772

SN - 2165-0373

VL - 12

SP - 393

EP - 402

JO - Journal of Sustainable Cement-Based Materials

JF - Journal of Sustainable Cement-Based Materials

IS - 4

ER -

A new insight into the mode of action between cement containing montmorillonite and polycarboxylate superplasticizer

Abstract

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Research Keywords

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