Métallurgie et mines; Bâtiments génie civil transports; Urbanisme et architecture [génie civil]; Effective stress; Hygroscopic transfer; Relative humidity; Structural behaviour; Suction; Unstabilized rammed earth material
Abstract :
[en] Rammed earth constructions exhibit strength and deformation properties that evolve as a function of the relative humidity of the air in contact with the walls. This effect must be considered in the structural design of the construction. This work studies, through finite element simulation, the impact of the hygroscopic transfers through the wall on the structural response of a classical two-storey rammed earth building. The coupling between the mechanical and the hygroscopic behaviour is considered by the concept of effective stress for unsaturated soils, in order to reproduce the effect of suction on the strength, the stiffness and the volumetric variations of the rammed earth. The simulations show classical deformation of the structure due to distributed load on the floors while the hygroscopic changes in the rammed earth (essentially drying) induce additional displacements of the walls that remain in a very acceptable range. Finally, an extreme case is envisaged in which the loads on the floors are increased excessively in order to study the plastic response of the wall.
Disciplines :
Civil engineering
Author, co-author :
François, Bertrand ; Université de Liège - ULiège > Urban and Environmental Engineering
Palazon, Lucia
Gerard, Pierre ; Université de Liège - ULiège > Département ArGEnCo > Géomécanique et géologie de l'ingénieur
Language :
English
Title :
Structural behaviour of unstabilized rammed earth constructions submitted to hygroscopic conditions
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Bibliography
AASHRAE TenWolde, Standard 160P: criteria for moisture control design analysis in buildings. ASHRAE Trans. 114:1 (2008), 167–169.
Alonso, E.E., Pereira, J.M., Vaunat, J., Olivella, S., A microstructurally based effective stress for unsaturated soils. Géotechnique 60:12 (2010), 913–925.
Alley, P.J., Rammed earth construction. N. Z. Eng., 3(6), 1948, 582.
C. Beckett, D. Ciancio, A review of the contribution of thermal mass to thermal comfort in rammed earth structures, in: 2nd International Conference on Sustainable Built Environment, Sri Lanka, 2012.
Bishop, A.W., The principle of effective stress. Tecnisk Ukeblad 39 (1959), 859–863.
Bui, T.T., Bui, Q.B., Limam, A., Morel, J.C., Modeling rammed earth wall using discrete element method. Continuum Mech. Thermodyn. 28:1–2 (2016), 523–538.
Bui, Q.B., Morel, J.C., Hans, S., Walker, P., Effect of moisture content on the mechanical characteristics of rammed earth. Constr. Build. Mater. 54 (2014), 163–169.
Champiré, F., Fabbri, A., Morel, J.C., Wong, H., McGregor, F., Impact of relative humidity on the mechanical behavior of compacted earth as a building material. Constr. Build. Mater. 110 (2016), 70–78.
Chandler, R.J., Gutierrez, C.I., The filter paper method of suction measurement. Géotechnique 36:1986 (1986), 265–268.
R. Charlier, Approche unifiée de quelques problèmes non linéaires de mécanique des milieux continus par la méthode des éléments finis, Thèse de doctorat, Faculté des Sciences Appliquées, Université de Liège, 1987.
Collin, F., Li, X., Radu, J.P., Charlier, R., Thermo-hydro-mechanical coupling in clay barriers. Eng. Geol. 64 (2002), 179–193.
Delage, P., Howat, M., Cui, Y., The relationship between suction and swelling properties in a heavily compacted unsaturated clay. Eng. Geol. 50:1–2 (1998), 31–48.
Delgado, M.C.J., Guerrero, I.C., The selection of soils for unstabilised earth building: a normative review. Constr. Build. Mater. 21:2 (2007), 237–251.
Drucker, D.C., Prager, W., Solid mechanics and plastic analysis for limit design. Q. Appl. Math. 10:2 (1952), 157–165.
François, B., Laloui, L., ACMEG-TS: A constitutive model for unsaturated soils under non-isothermal conditions. Int. J. Numer. Anal. Methods Geomech. 32 (2008), 1955–1988.
Gallipoli, D., Bruno, A.W., Perlot, C., Mendes, J., A geotechnical perspective of raw earth building. Acta Geotech., 2017, 10.1007/s11440-016-0521-1.
Gerard, P., Mahdad, M., McCormack, A.R., François, B., A unified failure criterion for unstabilized rammed earth materials upon varying relative humidity conditions. Constr. Build. Mater. 95 (2015), 437–447.
Gerard, P., Charlier, R., Chambon, R., Collin, F., Influence of evaporation and seepage on the convergence of a ventilated cavity. Water Resour. Res., 44(5), 2008, 10.1029/2007WR006500.
Hall, M., Allinson, D., Analysis of the hygrothermal functional properties of stabilised rammed earth materials. Build. Environ. 44:9 (2009), 1935–1942.
Houben, H., Guillaud, H., Earth construction – a comprehensive guide. Second ed., 1994, Intermediate Technology Publications, London, UK.
Hujeux, J.C., Une loi de comportement pour le chargement cyclique des sols. Génie Parasismique, 1985, Les éditions de l'E.N.P.C, Paris, 287–303.
Jaquin, P.A., Augarde, C.E., Gallipoli, D., Toll, D.G., The strength of unstabilised rammed earth materials. Géotechnique 59:5 (2009), 487–490.
L. Laloui, M. Nuth, B. François, Mechanics of unsaturated soils, in: L. Laloui (Ed.), Mechanics of unsaturated materials, Wiley & Sons, Inc., 2010, pp. 29–54.
B. Little, T. Morton, Building with earth in Scotland: innovative design and sustainability. Scottish Executive Central Research Unit Publication, 2001.
Miccoli, L., Oliveira, D.V., Silva, R.A., Müller, U., Schueremans, L., Static behaviour of rammed earth: experimental testing and finite element modelling. Mater. Struct. 48:10 (2015), 3443–3456.
Miccoli, L., Drougkas, A., Müller, U., In-plane behaviour of rammed earth under cyclic loading: experimental testing and finite element modelling. Eng. Struct. 125 (2016), 144–152.
G.F. Middleton, Bulletin 5. Earth Wall Construction. Fourth Edition, CSIRO Division of Building, Construction and Engineering, North Ryde, Australia, 1992.
J.C. Morel, A. Mesbah, M. Oggero, P. Walker, Building houses with local materials: means to drastically reduce the environmental impact of construction, Build. Environ. 36 (2001) 1119–1126.
Nowamooz, H., Chazallon, C., Finite element modelling of a rammed earth wall. Constr. Build. Mater. 25:4 (2011), 2112–2121.
Nuth, M., Laloui, L., Effective stress concept in unsaturated soils: clarification and validation of a unified framework. Int. J. Numer. Anal. Methods Geomech. 32:7 (2008), 771–801.
NZS 4298:1998, New Zealand Standard. 1998, Materials and Workmanship for Earth Buildings, Standard New Zealand, Wellington, New Zealand.
Soudani, L., Fabbri, A., Morel, J.C., Woloszyn, M., Chabriac, P.A., Wong, H., Grillet, A.C., Assessment of the validity of some common assumptions in hygrothermal modeling of earth based materials. Energy Build. 116 (2016), 498–511.
Australia, Standards, The Australian Earth Building Handbook. 2002, Standards Australia, Sydney, Australia.
Van Genuchten, M.T., A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Am. J. 44 (1980), 892–898.
Walker, P., Keable, R., Martin, J., Maniatidis, V., Rammed Earth: Design and Construction Guidelines. 2005, BRE Bookshop, Watford, UK.
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