Impact of drying on pore structures in ettringite-rich cements

I. Galan; H. Beltagui; M. García-Maté; F. P. Glasser; M. S. Imbabi

doi:10.1016/j.cemconres.2016.03.003

Impact of drying on pore structures in ettringite-rich cements

I. Galan^*, H. Beltagui, M. García-Maté, F. P. Glasser, M. S. Imbabi

^*Corresponding author for this work

University of Málaga

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

55 Citations (Scopus)

Abstract

Drying techniques affect the properties of cement pastes to varying extents. The effect of different drying techniques on calcium sulfoaluminate-based (C$A) cements and their constituent phases is reported for a range of simulated and commercial C$A pastes which are benchmarked against an OPC paste. The recommended methodologies used to dry samples were identified from the literature and include D-drying and solvent exchange. These methods were used in conjunction with mercury intrusion porosimetry (MIP) and X-ray powder diffraction (XRPD) measurements to assess the changes in pore structure and the damage to crystalline phases, respectively. D-drying and isopropanol exchange are the most satisfactory and least damaging methods for drying C$A based pastes.

Original language	English
Pages (from-to)	85-94
Number of pages	10
Journal	Cement and Concrete Research
Volume	84
Early online date	2 Apr 2016
DOIs	https://doi.org/10.1016/j.cemconres.2016.03.003
Publication status	Published - 1 Jun 2016

Bibliographical note

Acknowledgments
IG, HB, FPG and MSI gratefully acknowledge the financial support provided by the Gulf Organization for Research and Development (GORD), Qatar, through research grant number ENG016RGG0593.

MGM acknowledges the financial support provided by the Junta de Andalucía through research grant number P11-FQM-07517.

Keywords

3CaO·3AlO·CaSO (D)
Drying (A)
Ettringite (D)
Mercury porosimetry (B)
Pore size distribution (B)

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title = "Impact of drying on pore structures in ettringite-rich cements",

abstract = "Drying techniques affect the properties of cement pastes to varying extents. The effect of different drying techniques on calcium sulfoaluminate-based (C$A) cements and their constituent phases is reported for a range of simulated and commercial C$A pastes which are benchmarked against an OPC paste. The recommended methodologies used to dry samples were identified from the literature and include D-drying and solvent exchange. These methods were used in conjunction with mercury intrusion porosimetry (MIP) and X-ray powder diffraction (XRPD) measurements to assess the changes in pore structure and the damage to crystalline phases, respectively. D-drying and isopropanol exchange are the most satisfactory and least damaging methods for drying C$A based pastes.",

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note = "Acknowledgments IG, HB, FPG and MSI gratefully acknowledge the financial support provided by the Gulf Organization for Research and Development (GORD), Qatar, through research grant number ENG016RGG0593. MGM acknowledges the financial support provided by the Junta de Andaluc{\'i}a through research grant number P11-FQM-07517.",

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AU - Galan, I.

AU - Beltagui, H.

AU - García-Maté, M.

AU - Glasser, F. P.

AU - Imbabi, M. S.

N1 - Acknowledgments IG, HB, FPG and MSI gratefully acknowledge the financial support provided by the Gulf Organization for Research and Development (GORD), Qatar, through research grant number ENG016RGG0593. MGM acknowledges the financial support provided by the Junta de Andalucía through research grant number P11-FQM-07517.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Drying techniques affect the properties of cement pastes to varying extents. The effect of different drying techniques on calcium sulfoaluminate-based (C$A) cements and their constituent phases is reported for a range of simulated and commercial C$A pastes which are benchmarked against an OPC paste. The recommended methodologies used to dry samples were identified from the literature and include D-drying and solvent exchange. These methods were used in conjunction with mercury intrusion porosimetry (MIP) and X-ray powder diffraction (XRPD) measurements to assess the changes in pore structure and the damage to crystalline phases, respectively. D-drying and isopropanol exchange are the most satisfactory and least damaging methods for drying C$A based pastes.

AB - Drying techniques affect the properties of cement pastes to varying extents. The effect of different drying techniques on calcium sulfoaluminate-based (C$A) cements and their constituent phases is reported for a range of simulated and commercial C$A pastes which are benchmarked against an OPC paste. The recommended methodologies used to dry samples were identified from the literature and include D-drying and solvent exchange. These methods were used in conjunction with mercury intrusion porosimetry (MIP) and X-ray powder diffraction (XRPD) measurements to assess the changes in pore structure and the damage to crystalline phases, respectively. D-drying and isopropanol exchange are the most satisfactory and least damaging methods for drying C$A based pastes.

KW - 3CaO·3AlO·CaSO (D)

KW - Drying (A)

KW - Ettringite (D)

KW - Mercury porosimetry (B)

KW - Pore size distribution (B)

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DO - 10.1016/j.cemconres.2016.03.003

M3 - Article

AN - SCOPUS:84962385350

SN - 0008-8846

VL - 84

SP - 85

EP - 94

JO - Cement and Concrete Research

JF - Cement and Concrete Research

ER -

Impact of drying on pore structures in ettringite-rich cements

Abstract

Bibliographical note

Keywords

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