Naslov
Influence of Air Entrapment on the Unsaturated Hydraulic Conductivity Functions

Autori
Bicalho, K. V. ; Znidarcic, D. ; Ko, H-Y.

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 12th Panamerican Conference on Soil Mechanics and Geotechnical Engineering / Culligan, P. J. ; Einstein, H. H ; Whittle, A.J. - Cambridge (MA) : MIT Press, 2003, 1597-1602

Skup
Panamerican Conference on Soil Mechanics and Geotechnical Engineering

Mjesto i datum
Cambridge (MA), Sjedinjene Američke Države, 22.06.2003. - 26.06.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
entrapped air; hydraulic conductivity; unsaturated soil

Sažetak
Important geotechnical structures involve cohesive soil compacted either around or on the wet side of optimum water content. In general, at the corresponding saturation values, water component in soil voids is continuous but the air phase is not. The modeling of infiltration process through compacted soils requires that the hydraulic conductivity of the soil be defined. Over the years a number of unsaturated hydraulic conductivity functions have been suggested. Most of these functions were developed to describe the movement of water in a porous medium containing continuous air channels. This paper shows that these functions should not be use for simulating infiltration process. Hydraulic constitutive functions for soils with discontinuous air phase are proposed. Numerical simulations show the ability of the proposed constitutive relationships to model infiltration through compacted soils.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo

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