Cement and Concrete Research

, volume 89 , pages 230-248

Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete

R. P. Salvador ^{1, 2}

Sergio Henrique Pialarissi Cavalaro ³

Maria A Cincotto ⁴

Antonio Domingues de Figueiredo ⁴

Hide authors affiliations Show authors affiliations: 4 affiliations

CAPES Foundation, Ministry of Education of Brazil, Brasília, DF 70040-020, Brazil |

Department of Civil and Environmental Engineering, BarcelonaTech, Polytechnic University of Catalonia, UPC, Jordi Girona 1-3, 08034 Barcelona, Spain |

Department of Civil and Environmental Engineering, BarcelonaTech, Polytechnic University of Catalonia, UPC, Jordi Girona 1–3, 08034 Barcelona, Spain |

⁴

Department of Civil Construction Engineering, Polytechnic School of University of São Paulo, Professor Almeida Prado, Trav 2, 83, 05424-970 São Paulo, Brazil |

Publication type: Journal Article

Publication date: 2016-11-01

Elsevier

Cement and Concrete Research

scimago Q1

wos Q1

SJR: 5.815

CiteScore: 23.5

Impact factor: 13.1

ISSN: 00088846

DOI: 10.1016/j.cemconres.2016.09.002

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General Materials Science

Building and Construction

Abstract

The objective of this work is to parametrize the early age hydration behavior of accelerated cement pastes based on the chemical properties of cement and accelerators. Eight cements, three alkali-free and one alkaline accelerators were evaluated. Isothermal calorimetry, in situ XRD and SEM imaging were performed to characterize kinetics and mechanisms of hydration and the microstructure development. The reactivity of all accelerators is directly proportional to their aluminum and sulfate concentrations and to the amount and solubility of the setting regulator contained in cement. Alite hydration is enhanced if a proper C3A/SO3 ratio (between 0.67 and 0.90) remains after accelerator addition and if limestone filler is employed, because undersulfated C3A reactions are avoided. Combinations of compatible materials are recommended to enhance the performance of the matrix and to prevent an undesirable hydration behavior and its consequences in mechanical strength development.

Found

1 citation

Meddah Mohammed

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PhD in Engineering, associate professor

45 publications, 2 083 citations, 46 reviews

h-index: 19

Sultan Qaboos University

Durability of concrete

Green technologies

Sustainable development

Use of by-products in cement

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GOST |

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GOST Copy

Salvador R. P. et al. Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete // Cement and Concrete Research. 2016. Vol. 89. pp. 230-248.

GOST all authors (up to 50) Copy

Salvador R. P., Pialarissi Cavalaro S. H., Cincotto M. A., de Figueiredo A. D. Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete // Cement and Concrete Research. 2016. Vol. 89. pp. 230-248.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1016/j.cemconres.2016.09.002

UR - https://doi.org/10.1016/j.cemconres.2016.09.002

TI - Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete

T2 - Cement and Concrete Research

AU - Salvador, R. P.

AU - Pialarissi Cavalaro, Sergio Henrique

AU - Cincotto, Maria A

AU - de Figueiredo, Antonio Domingues

PY - 2016

DA - 2016/11/01

PB - Elsevier

SP - 230-248

VL - 89

SN - 0008-8846

ER -

BibTex

Cite this

BibTex (up to 50 authors) Copy

@article{2016_Salvador,

author = {R. P. Salvador and Sergio Henrique Pialarissi Cavalaro and Maria A Cincotto and Antonio Domingues de Figueiredo},

title = {Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete},

journal = {Cement and Concrete Research},

year = {2016},

volume = {89},

publisher = {Elsevier},

month = {nov},

url = {https://doi.org/10.1016/j.cemconres.2016.09.002},

pages = {230--248},

doi = {10.1016/j.cemconres.2016.09.002}

}

Publisher

Elsevier

Journal

Cement and Concrete Research

scimago Q1

wos Q1

SJR

5.815

CiteScore

23.5

Impact factor

13.1

ISSN

00088846 (Print)