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Etude de l'interaction sol-atmosphère en chambre environnementale

Abstract : An environmental chamber was developed to study the behavior of soil-atmosphere interface during both infiltration and evaporation. A volume of about one cube meter of Romainville green clay was prepared by compacting. Nearly one hundred sensors were used to monitor a large range of the parameters of soil (suction, water content, temperature, heave) and of the air (wind speed, relative humidity, temperature). Soil surface temperature and cracking due to drying were also monitored. The recorded data of the first humidification phase made possible the determination of the hydraulic conductivity as a function of soil suction and the soil water retention curve. The second phase consisted of four drying tests: two for the assessment of the potential evaporation rate PE and two others for the determination of the ratio between the actual evaporation rate AE and the potential evaporation rate PE. Based on the recorded data, a new approach allowing estimation of PE was elaborated. Furthermore, a new approach allowing calculation of AE accounting for cracking at soil surface was also developed.
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Submitted on : Wednesday, September 15, 2010 - 1:57:46 PM
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  • HAL Id : pastel-00517746, version 1


An-Ninh Ta. Etude de l'interaction sol-atmosphère en chambre environnementale. Génie mécanique [physics.class-ph]. Ecole des Ponts ParisTech, 2009. Français. ⟨NNT : ENPC20090005⟩. ⟨pastel-00517746⟩



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