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Maturity method to predict the evolution of the properties of sprayed concrete

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journal contribution
posted on 14.05.2015, 10:47 by Isaac Galobardes, Sergio Pialarissi-Cavalaro, Chris Goodier, Simon Austin, Angel Rueda
The maturity method provides a simple approach for assessing the strength evolution of concrete. Although it is already used in the precast industry, no reported applications with sprayed concrete may be found in the literature. Such concrete presents singular characteristics due to the spraying process and, in some cases, due to the introduction of accelerators that modify the kinetics of cement hydration. Consequently, the traditional equations that relate the evolution of mechanical properties and the maturity index might not apply in this case. The objective of this study is to adapt the maturity method to sprayed concrete. An experimental program was conducted with 24 concrete mixes sprayed in laboratory and tested for the evolution of temperature and compressive strength. An alternative equation was proposed to relate the maturity index and the mechanical properties. Subsequently, finite element models were developed to generalize the maturity curves considering the local design parameters.

Funding

The authors of this study would like to thank the Universitat Politècnica de Catalunya and the Col·legi d’Enginyers de Camins, Canals i Ports de Catalunya for their financial support.

History

School

  • Architecture, Building and Civil Engineering

Published in

Construction and Building Materials

Volume

79

Pages

357 - 369

Citation

GALOBARDES, I. ... et al, 2015. Maturity method to predict the evolution of the properties of sprayed concrete. Construction and Building Materials, 79, pp. 357 - 369

Publisher

© Elsevier Ltd

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

ISSN

0950-0618

Language

en

Exports