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Title: Maturity method to predict the evolution of the properties of sprayed concrete
Authors: Galobardes, Isaac
Cavalaro, Sergio H.
Goodier, Chris I.
Austin, Simon A.
Rueda, Angel
Keywords: Compressive strength
Control method
Evolution of temperature
Maturity method
Sprayed concrete
Issue Date: 2015
Publisher: © Elsevier Ltd
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
Abstract: 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.
Sponsor: 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.
Version: Accepted for publication
DOI: 10.1016/j.conbuildmat.2014.12.038
URI: https://dspace.lboro.ac.uk/2134/17495
Publisher Link: http://dx.doi.org/10.1016/j.conbuildmat.2014.12.038
ISSN: 0950-0618
Appears in Collections:Published Articles (Architecture, Building and Civil Engineering)

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