, De cette manière, les particules "voient" le fluide suspendant comme un milieu continu. Par exemple, dans notre cas, cela revientà s'assurer que la taille des inclusions de sable (63 µm/4 mm) est grande devant la taille des grains de filler (diamètre moyen de 10 µm) ou de ciment (diamètre moyen de 12 µm), 'une suspension isotrope d'inclusions sphériques, non-colloïdales et monodisperses dans un fluideà seuil homogène

L. Conclusions and . Le-recyclage-du-béton-est-né-d'une-volonté-d'inscrire-le-btp-dans-une-logique-de-développement-durable-;-poon, Les granulats de bétons recyclés (GBR) présentent la particularité d'être fortement poreux en comparaison avec les granulats naturels. L'incorporation des GBR dans un nouveau béton provoque une modification de sa quantité d'eau efficace. Ceci a pour cause les transferts d'eau qui ont lieu entre la porosité des GBR et la pâte de ciment fraîche, 2004.

, Du filler calcaire inerte aété utilisé dans une série de mortiers au lieu du ciment afin d'exclure l'effet des réactions d'hydratation de la pâte de ciment sur les transferts d'eauétudiés et sur la maniabilité du mélange de sable avec la pâte

N. J. Bibliographie-balmforth, A. Burbidge, R. Craster, J. Salzig, and A. Shen, Visco-plastic models of isothermal lava domes, Journal of Fluid Mechanics, vol.403, p.112, 2000.

N. J. Balmforth, R. V. Craster, A. C. Rust, and R. Sassi, Viscoplastic flow over an inclined surface, Journal of Non-Newtonian Fluid Mechanics, vol.139, issue.1-2, p.11, 2006.

L. Bello, E. Garcia-diaz, and P. Rougeau, An original test method to assess water absorption/desorption of lightweight aggregates in presence of cement paste, Construction and Building Materials, vol.154, pp.159-164, 2017.
URL : https://hal.archives-ouvertes.fr/hal-02892634

A. Bendimerad, E. Roziere, and A. Loukili, Combined experimental methods to assess absorption rate of natural and recycled aggregates, Materials and Structures, vol.48, issue.11, pp.45-159, 2015.

D. P. Bentz and D. P. Bentz, CEMHYD3D : A three-dimensional cement hydration and microstructure development modelling package. Version 2.0. US Department of Commerce, p.80, 2000.

X. Chateau, G. Ovarlez, and K. L. Trung, Homogenization approach to the behavior of suspensions of noncolloidal particles in yield stress fluids, Journal of Rheology, vol.52, issue.2, pp.163-164, 2008.
URL : https://hal.archives-ouvertes.fr/hal-00490785

E. Commission, , 2011.

P. Coussot, Rhéophysique la matière dans tous ses Etats, vol.102, p.169, 2012.

M. S. De-juan and P. A. Gutiérrez, Study on the influence of attached mortar content on the properties of recycled concrete aggregate. Construction and building materials, vol.23, p.32, 2009.

F. De-larrard, C. Ferraris, and T. Sedran, Fresh concrete : a herschel-bulkley material, Materials and structures, vol.31, issue.7, pp.103-113, 1998.

F. De-larrard and C. F. Ferraris, Rhéologie du béton frais remanié, Bulletin des laboratoires des ponts et chaussées, vol.214, p.146, 1998.

J. F. Douglas and E. J. Garboczi, Intrinsic viscosity and the polarizability of particles having a wide range of shapes, Advances in chemical physics, vol.91, pp.100-146, 1995.

A. Einstein, On the motion of small particles suspended in liquids at rest required by the molecular-kinetic theory of heat, Annalen der physik, vol.17, p.142, 1905.

L. Evangelista and J. De-brito, Mechanical behaviour of concrete made with fine recycled concrete aggregates. Cement and concrete composites, vol.29, pp.40-51, 2007.

L. Evangelista and J. De-brito, Durability performance of concrete made with fine recycled concrete aggregates. Cement and Concrete Composites, vol.32, pp.40-44, 2010.

C. F. Ferraris and F. Delarrard, Testing and modeling of fresh concrete rheology, pp.103-113, 1998.

R. J. Flatt, D. Larosa, and N. Roussel, Linking yield stress measurements : Spread test versus viskomat, Cement and Concrete Research, vol.36, issue.1, p.135, 2006.

M. Fourmentin, P. Faure, P. Pelupessy, V. Sarou-kanian, U. Peter et al., Nmr and mri observation of water absorption/uptake in hemp shives used for hemp concrete, Construction and Building Materials, vol.124, pp.156-159, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01784862

M. Fourmentin, P. Faure, S. Rodts, U. Peter, D. Lesueur et al., Nmr observation of water transfer between a cement paste and a porous medium, Cement and Concrete Research, vol.95, issue.8, pp.56-64, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01784845

P. Gentilini, O. Yazoghli-marzouk, V. Delmotte, and Y. Descantes, Determination of the water content of fillerised fine aggregates in the saturated surface dry state, Construction and Building Materials, vol.98, p.33, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01470407

J. M. Gómez-soberón, Porosity of recycled concrete with substitution of recycled concrete aggregate : an experimental study, Cement and concrete research, vol.32, issue.8, pp.1301-1311, 2002.

I. González-taboada, B. González-fonteboa, F. Martínez-abella, and S. Seara-paz, Analysis of rheological behaviour of self-compacting concrete made with recycled aggregates, Construction and Building Materials, vol.157, pp.18-25, 2017.

H. Hafid, Influence des paramètres morphologiques des granulats sur le comportement rhéologique des bétons frais :étude sur systèmes modèles, 2012.

Z. Hashin and S. Shtrikman, A variational approach to the theory of the elastic behaviour of multiphase materials, Journal of the Mechanics and Physics of Solids, vol.11, issue.2, pp.127-140, 1963.

. Ifsttar-n78, Mesure de l'absorption totale d'eau par un sable concassé, pp.31-45, 2011.

I. S. Ignjatovi?, S. B. Marinkovi?, Z. M. Mi?kovi?, and A. R. Savi?, Flexural behavior of reinforced recycled aggregate concrete beams under short-term loading, Materials and structures, vol.46, issue.6, p.36, 2013.

S. Jarny, N. Roussel, S. Rodts, F. Bertrand, R. Le-roy et al., Rheological behavior of cement pastes from mri velocimetry, Cement and Concrete Research, vol.35, issue.10, p.109, 2005.

E. Khoury, W. Ambrós, B. Cazacliu, C. H. Sampaio, and S. Remond, Heterogeneity of recycled concrete aggregates, an intrinsic variability, Construction and Building Materials, vol.175, p.159, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01990318

S. Kou and C. Poon, Properties of self-compacting concrete prepared with coarse and fine recycled concrete aggregates. Cement and Concrete composites, vol.31, pp.622-627, 2009.

I. M. Krieger and T. J. Dougherty, A mechanism for non-newtonian flow in suspensions of rigid spheres, Transactions of the Society of Rheology, vol.3, issue.1, pp.145-146, 1959.

M. Lago and M. Araujo, Capillary rise in porous media, Physica A : Statistical Mechanics and its Applications, vol.289, issue.1-2, p.27, 2001.

T. Le, G. Le-saout, E. Garcia-diaz, D. Betrancourt, and S. Rémond, Hardened behavior of mortar based on recycled aggregate : Influence of saturation state at macroand microscopic scales, Construction and Building Materials, vol.141, pp.479-490, 2017.

T. Le, S. Rémond, G. Le-saout, and E. Garcia-diaz, Fresh behavior of mortar based on recycled sand-influence of moisture condition, Construction and Building Materials, vol.106, issue.7, pp.159-160, 2016.
URL : https://hal.archives-ouvertes.fr/hal-02497746

A. Lecomte and J. Mechling, Compacité des mélanges et propriétés des grains, BULLETIN-LABORATOIRES DES PONTS ET CHAUSSEES, p.154, 1999.

F. Mahaut, X. Chateau, P. Coussot, and G. Ovarlez, Yield stress and elastic modulus of suspensions of noncolloidal particles in yield stress fluids, Journal of Rheology, vol.52, issue.1, p.143, 2008.
URL : https://hal.archives-ouvertes.fr/hal-00331837

F. Mahaut, S. Mokeddem, X. Chateau, N. Roussel, and G. Ovarlez, Effect of coarse particle volume fraction on the yield stress and thixotropy of cementitious materials, Cement and concrete research, vol.38, issue.11, pp.1276-1285, 2008.

L. Mongeard and V. Veschambre, Eléments pour une histoire de la déconstruction : evolutions en matière de démolition de l'habitat social (agglomération lyonnaise : 1978-2013). In Deuxième congrès francophone d'histoire de la construction, p.23, 2014.

J. Nael-redolfi, Absorption d'eau des granulats poreux : mesure et conséquences sur la formulation des mortiers et des bétons, vol.36, pp.135-161, 2016.

N. F. En, Essais pour déterminer les caractéristiques mécaniques et physiques des granulats. Partie 6 : détermination de la masse volumique réelle et du coefficient d'absorption d'eau, vol.29, p.28, 2001.

V. Nguyen, S. Remond, and J. Gallias, Influence of cement grouts composition on the rheological behaviour, Cement and Concrete Research, vol.41, issue.3, p.111, 2011.

G. Ovarlez, F. Mahaut, S. Deboeuf, N. Lenoir, S. Hormozi et al., Flows of suspensions of particles in yield stress fluids, Journal of rheology, vol.59, issue.6, pp.146-164, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01223726

A. Padmini, K. Ramamurthy, and M. Mathews, Influence of parent concrete on the properties of recycled aggregate concrete, Construction and Building Materials, vol.23, issue.2, pp.30-33, 2009.

S. Paranavithana and A. Mohajerani, Effects of recycled concrete aggregates on properties of asphalt concrete. Resources, Conservation and Recycling, vol.48, p.24, 2006.

T. H. Phan, M. Chaouche, and M. Moranville, Influence of organic admixtures on the rheological behaviour of cement pastes, Cement and Concrete Research, vol.36, issue.10, p.110, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00120163

C. Poon, Z. Shui, L. Lam, H. Fok, and S. Kou, Influence of moisture states of natural and recycled aggregates on the slump and compressive strength of concrete, Cement and concrete research, vol.34, issue.1, pp.51-159, 2004.

C. S. Poon, Z. Shui, and L. Lam, Effect of microstructure of itz on compressive strength of concrete prepared with recycled aggregates, Construction and Building Materials, vol.18, issue.6, p.30, 2004.

. Recybeton, Projet national recybeton, 2018.

N. Roussel and P. Coussot, fifty-cent rheometer" for yield stress measurements : from slump to spreading flow, Journal of rheology, vol.49, issue.3, pp.705-718, 2005.

N. Roussel, G. Ovarlez, S. Garrault, and C. Brumaud, The origins of thixotropy of fresh cement pastes, Cement and Concrete Research, vol.42, issue.1, p.102, 2012.
URL : https://hal.archives-ouvertes.fr/hal-00705595

A. Schwartzentruber and C. Catherine, La méthode du mortier de bétonéquivalent (mbe)-un nouvel outil d'aideà la formulation des bétons adjuvantés, Materials and structures, vol.33, issue.8, pp.72-99, 2000.

K. L. Scrivener, A. K. Crumbie, and P. Laugesen, The interfacial transition zone (itz) between cement paste and aggregate in concrete, Interface science, vol.12, issue.4, pp.62-89, 2004.

K. L. Scrivener and A. Nonat, Hydration of cementitious materials, present and future, Cement and concrete research, vol.41, issue.7, p.111, 2011.

V. W. Tam, X. Gao, C. M. Tam, C. , and C. , New approach in measuring water absorption of recycled aggregates. Construction and building materials, vol.22, p.34, 2008.

A. D. Tegguer, Determining the water absorption of recycled aggregates utilizing hydrostatic weighing approach, Construction and Building Materials, vol.27, pp.35-39, 2012.
URL : https://hal.archives-ouvertes.fr/hal-02884089

I. B. Topcu and S. ?engel, Properties of concretes produced with waste concrete aggregate, Cement and concrete research, vol.34, issue.8, p.43, 2004.

. Unicem, , 2016.

. Unpg, , vol.17, 2016.

T. Vu, G. Ovarlez, and X. Chateau, Macroscopic behavior of bidisperse suspensions of noncolloidal particles in yield stress fluids, Journal of Rheology, vol.54, issue.4, pp.145-146, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00493853

Y. Wang and S. Diamond, A fractal study of the fracture surfaces of cement pastes and mortars using a stereoscopic sem method, Cement and Concrete Research, vol.31, issue.10, p.78, 2001.

E. W. Washburn, The dynamics of capillary flow, Physical review, vol.17, issue.3, p.27, 1921.

J. Xiao, J. Li, and C. Zhang, Mechanical properties of recycled aggregate concrete under uniaxial loading, Cement and concrete research, vol.35, issue.6, pp.1187-1194, 2005.

A. Yacoub, A. Djerbi, and T. Fen-chong, Water absorption in recycled sand : New experimental methods to estimate the water saturation degree and kinetic filling during mortar mixing, Construction and Building Materials, vol.158, pp.464-471, 2018.
URL : https://hal.archives-ouvertes.fr/hal-02884857

M. Zhang, G. Ye, and K. Van-breugel, A numerical-statistical approach to determining the representative elementary volume (rev) of cement paste for measuring diffusivity, Materiales de Construcción, vol.60, issue.300, p.61, 2010.

Z. Zhao, S. Remond, D. Damidot, and W. Xu, Influence of hardened cement paste content on the water absorption of fine recycled concrete aggregates, Journal of Sustainable Cement-Based Materials, vol.2, issue.3-4, pp.186-203, 2013.

Z. Zhao, S. Remond, D. Damidot, and W. Xu, Influence of fine recycled concrete aggregates on the properties of mortars, Construction and Building Materials, vol.81, p.30, 2015.

H. Zhou, Calculation of translational friction and intrinsic viscosity. i. general formulation for arbitrarily shaped particles, Biophysical journal, vol.69, issue.6, pp.151-157, 1995.