Experimental investigation of the first desorption isotherm of a high performance concrete with thin sliced samples

Wu, Qier; Rougelot, Thomas; Burlion, Nicolas; Bourbon, Xavier

doi:10.1016/j.conbuildmat.2014.09.032

Cited by 11 publications

(7 citation statements)

References 37 publications

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“…1. More experimental details are given in [46]. In general, the time required for mass stabilization is around 30 days at each relative humidity imposed in the present study.…”

Section: Mass Variation Kineticsmentioning

confidence: 99%

Representative volume element estimation for desorption isotherm of concrete with sliced samples

Rougelot

Burlion

et al. 2015

Cement and Concrete Research

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“…1. More experimental details are given in [46]. In general, the time required for mass stabilization is around 30 days at each relative humidity imposed in the present study.…”

Section: Mass Variation Kineticsmentioning

confidence: 99%

Representative volume element estimation for desorption isotherm of concrete with sliced samples

Rougelot

Burlion

et al. 2015

Cement and Concrete Research

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“…Note that the machining of thin specimen can increase the porous connectivity (Wu et al, 2014). However, microcracking mentioned previously above -item (i) -governs the increase in permeability in axial drying mode.…”

Section: Water Permeability Assessmentmentioning

confidence: 97%

“…Water absorption coefficient (%) Aggregates 12.5/ 25 2 Gravel 5/12.5 3 Sand 0/5 3 Fine sand <100 μm 3 Since the beginning of this programme in 2006, the use of thin section for the characterisation of desorption isotherms has been reported elsewhere (Ranaivomanana, Verdier, Sellier, & Bourbon, 2011;Wu, Rougelot, Burlion, & Bourbon, 2014).…”

Section: Samples Descriptionmentioning

confidence: 99%

Concrete desorption isotherms and permeability determination: effects of the sample geometry

Sémété¹,

Février²,

Pape

et al. 2015

European Journal of Environmental and Civil Engineering

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The isotherm sorption curve is a first-order parameter used in the Finite Element modelling of concrete moisture transport, shrinkage and creep behaviour. An original experimental campaign was developed by EDF R&D in order to characterise the first desorption isotherm at room temperature of a laboratory concrete. Long-term drying tests were carried out on three sample geometries: radial and axial one-dimensional drying on thin discs and multi-dimensional drying on representative elementary volumes (REV), in order to evaluate the possibility of accelerating the tests. Porosity, densities and mass loss curves are measured and the first-desorption isotherms obtained for the three different configurations are compared. Several analyses of these results are proposed including the assessment of a criterion for the determination of the moisture content final balance (estimation of the asymptotic mass loss) and the back analysis of equivalent permeability. The tests results show the significant time gain using thin (2.5 mm) concrete half samples drying in radial direction compared to the REV samples.

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“…This information proves to be hard to acquire experimentally mainly because the time required for the onset of water balance is too long (Baroghel-Bouny et al 1999;Baroghel-Bouny 2007;Trabelsi et al 2011;Poyet 2009;Poyet et al 2011;Sémété et al 2016). Many authors have attempted to gain time by diminishing the dimension of the tested samples (fine disks, powders, shreds) (Radjy et al 2003;Daïan 1988;BaroghelBouny et al 1999;Tada and Watanabe 2005;Espinosa and Franke 2006;Baroghel-Bouny 2007;Ishida et al 2007;Trabelsi et al 2011;Q. Wu et al 2014;Rougelot et al 2009;Sémété et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Wu et al 2014;Rougelot et al 2009;Sémété et al 2016). Nevertheless, this approach does pose a problem of parasitic carbonation during the tests and calls for particular precaution: injection of inert gas for instance (Ranaivomanana et al 2011;Brue et al 2012;Q. Wu et al 2014).…”

Section: Introductionmentioning

confidence: 99%

The Use of Sorption Balance for the Characterization of the Water Retention Curve of Cement-Based Materials

Poyet

Trentin

Amblard

2016

ACT

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Among the necessary data in the description of the transport of water, the retention curve is a vital piece of information whose characterization can turn out to be long and fastidious. Within this framework, sorption balance is being put to use more and more often in laboratories. These experimental devices enable a faster onset for water balance using small amounts of substances previously reduced to powder. This approach proves to be particularly adapted to homogenous materials (cement pastes generally) but not to concrete because of the presence of aggregate. This article, first of all, clarifies in a summarized manner the working of sorption balance based on the results obtained with cement pastes. Secondly, a simplified method is proposed to test concrete.

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Experimental investigation of the first desorption isotherm of a high performance concrete with thin sliced samples

Cited by 11 publications

References 37 publications

Representative volume element estimation for desorption isotherm of concrete with sliced samples

Representative volume element estimation for desorption isotherm of concrete with sliced samples

Concrete desorption isotherms and permeability determination: effects of the sample geometry

The Use of Sorption Balance for the Characterization of the Water Retention Curve of Cement-Based Materials

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