Hydration products in sulfoaluminate cements: Evaluation of amorphous phases by XRD/solid-state NMR

D. Gastaldi; G. Paul; L. Marchese; S. Irico; E. Boccaleri; S. Mutke; L. Buzzi; F. Canonico

doi:10.1016/j.cemconres.2016.05.014

Hydration products in sulfoaluminate cements: Evaluation of amorphous phases by XRD/solid-state NMR

D. Gastaldi
, G. Paul
, L. Marchese
, S. Irico
, E. Boccaleri
, S. Mutke
, L. Buzzi
, F. Canonico

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

The hydration of four sulfoaluminate cements have been studied: three sulfoaluminate systems, having different content of sulfate and silicate, and one blend Portland-CSA-calcium sulfate binder. Hydration was followed up to 90 days by means of a combination of X-ray diffraction and solid state MAS-NMR; Differential scanning calorimetry and Scanning electron microscopy were also performed in order to help the interpretation of experimental data. High amount of amorphous phases were found in all the four systems: in low-sulfate cements, amorphous part is mainly ascribed to monosulfate and aluminium hydroxide, while strätlingite is observed if belite is present in the cement; in the blend system, C-S-H contributes to the amorphous phase beyond monosulfate.

Lingua originale	Inglese
pagine (da-a)	162-173
Numero di pagine	12
Rivista	Cement and Concrete Research
Volume	90
DOI	https://doi.org/10.1016/j.cemconres.2016.05.014
Stato di pubblicazione	Pubblicato - 1 dic 2016

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10.1016/j.cemconres.2016.05.014

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title = "Hydration products in sulfoaluminate cements: Evaluation of amorphous phases by XRD/solid-state NMR",

abstract = "The hydration of four sulfoaluminate cements have been studied: three sulfoaluminate systems, having different content of sulfate and silicate, and one blend Portland-CSA-calcium sulfate binder. Hydration was followed up to 90 days by means of a combination of X-ray diffraction and solid state MAS-NMR; Differential scanning calorimetry and Scanning electron microscopy were also performed in order to help the interpretation of experimental data. High amount of amorphous phases were found in all the four systems: in low-sulfate cements, amorphous part is mainly ascribed to monosulfate and aluminium hydroxide, while str{\"a}tlingite is observed if belite is present in the cement; in the blend system, C-S-H contributes to the amorphous phase beyond monosulfate.",

keywords = "Amorphous material (B), Hydration products (B), Monosulfate (D), Solid state nuclear magnetic resonance, Sulfoaluminate (D)",

author = "D. Gastaldi and G. Paul and L. Marchese and S. Irico and E. Boccaleri and S. Mutke and L. Buzzi and F. Canonico",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

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doi = "10.1016/j.cemconres.2016.05.014",

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TY - JOUR

T1 - Hydration products in sulfoaluminate cements

T2 - Evaluation of amorphous phases by XRD/solid-state NMR

AU - Gastaldi, D.

AU - Paul, G.

AU - Marchese, L.

AU - Irico, S.

AU - Boccaleri, E.

AU - Mutke, S.

AU - Buzzi, L.

AU - Canonico, F.

PY - 2016/12/1

Y1 - 2016/12/1

N2 - The hydration of four sulfoaluminate cements have been studied: three sulfoaluminate systems, having different content of sulfate and silicate, and one blend Portland-CSA-calcium sulfate binder. Hydration was followed up to 90 days by means of a combination of X-ray diffraction and solid state MAS-NMR; Differential scanning calorimetry and Scanning electron microscopy were also performed in order to help the interpretation of experimental data. High amount of amorphous phases were found in all the four systems: in low-sulfate cements, amorphous part is mainly ascribed to monosulfate and aluminium hydroxide, while strätlingite is observed if belite is present in the cement; in the blend system, C-S-H contributes to the amorphous phase beyond monosulfate.

AB - The hydration of four sulfoaluminate cements have been studied: three sulfoaluminate systems, having different content of sulfate and silicate, and one blend Portland-CSA-calcium sulfate binder. Hydration was followed up to 90 days by means of a combination of X-ray diffraction and solid state MAS-NMR; Differential scanning calorimetry and Scanning electron microscopy were also performed in order to help the interpretation of experimental data. High amount of amorphous phases were found in all the four systems: in low-sulfate cements, amorphous part is mainly ascribed to monosulfate and aluminium hydroxide, while strätlingite is observed if belite is present in the cement; in the blend system, C-S-H contributes to the amorphous phase beyond monosulfate.

KW - Amorphous material (B)

KW - Hydration products (B)

KW - Monosulfate (D)

KW - Solid state nuclear magnetic resonance

KW - Sulfoaluminate (D)

UR - https://www.scopus.com/pages/publications/84990858732

U2 - 10.1016/j.cemconres.2016.05.014

DO - 10.1016/j.cemconres.2016.05.014

M3 - Article

SN - 0008-8846

VL - 90

SP - 162

EP - 173

JO - Cement and Concrete Research

JF - Cement and Concrete Research

ER -

Hydration products in sulfoaluminate cements: Evaluation of amorphous phases by XRD/solid-state NMR

Abstract

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