.. .. Résultats,

. .. Conclusion,

, Les deux approches ont été appliquées sur une pâte de ciment durcie et une brique. Il a été constaté qu'après broyage, la majeure partie de la porosité de la BP est éliminée, ce qui n'est pas le cas pour la PCB. Une différence de porosité a également été obtenue par les deux méthodes pour la PCB

, Cette différence est attribuée à la sous-estimation de la porosité restante lors de l'utilisation de l'approche expérimentale du fait que la porosité de la PCB est toujours connectée, ce qui n'est pas le cas de la BP

, Grâce à l'essai au pycnomètre, il a été prouvé expérimentalement que la poudre absorbe de l'eau

. .. Méthodologie,

. Etude-de-l'hydratation, . De-la-porosité-d'une-matrice-cimentaire, and . .. Fc?????,

, Etude du comportement mécanique et rhéologique des mortiers

, Composition des mortiers et protocole de malaxage

. .. Procédure-expérimentale,

, Comportement des mortiers à l'état frais

, Comportement des mortiers à l'état durci

. .. Conclusion, 151 20% en masse, ce qui correspond à 23% en substitution volumique. Ainsi, l'utilisation de la PCB en substitution volumique et en

, En réalité, les fines de GBR ne contiennent pas 100% de pâte cimentaire, d'autres matériaux non poreux (granulat calcaire) qui peuvent diminuer d'une manière significative la porosité sont présents. Ainsi, si les fines de GBR sont bien caractérisées, elles peuvent facilement être

. Recybeton and . Pn, Complete recycling of concrete, 2012.

, UNICEM, Carrières de roches massives potentialités écologiques, 2008.

L. Unicem, , pp.3-4, 2018.

E. Uepg and . Aggregates-association, , 2017.

, Direction générale de la recherche et de l'innovation, HORIZON 2020 en bref, 2013.

P. Villoria and . Saez, European Legislation and Implementation Measures in the Management of Construction and Demolition Waste, Open Constr. Build. Technol. J, vol.5, pp.156-161, 2011.

P. Villoria and . Saez, European Legislation and Implementation Measures in the Management of Construction and Demolition Waste, Open Constr. Build. Technol. J, vol.5, pp.156-161, 2011.

R. Sato, I. Maruyama, T. Sogabe, and M. Sogo, Flexural Behavior of Reinforced Recycled Concrete Beams, J. Adv. Concr. Technol, vol.5, pp.43-61, 2007.

Z. Zhao, Re-use of fine recycled concrete aggregates for the manufacture of mortars, p.188, 2013.

T. Le, Influence de l'humidité des granulats de béton recyclé sur le comportement à l'état frais et durcissant des mortiers, 2015.

M. S. De-juan and P. A. Gutiérrez, Study on the influence of attached mortar content on the properties of recycled concrete aggregate, Constr. Build. Mater, vol.23, pp.872-877, 2009.

Z. Zhao, S. Remond, D. Damidot, and W. Xu, Influence of hardened cement paste content on the water absorption of fine recycled concrete aggregates, J. Sustain. Cem. Mater, vol.2, pp.186-203, 2013.

T. Le, S. Rémond, G. L. Saout, and E. Garcia-diaz, Fresh behavior of mortar based on recycled sand -Influence of moisture condition, Constr. Build. Mater, vol.106, pp.35-42, 2016.

S. Nagataki, A. Gokce, T. Saeki, and M. Hisada, Assessment of recycling process induced damage sensitivity of recycled concrete aggregates, Cem. Concr. Res, vol.34, pp.965-971, 2004.

A. Abbas, G. Fathifazl, B. Fournier, O. B. Isgor, R. Zavadil et al., Quantification of the residual mortar content in recycled concrete aggregates by image analysis, Mater. Charact, vol.60, pp.716-728, 2009.

E. , 1097-6, Tests for mechanical and physical properties of aggregates -Part 6: Determination of particle density and water absorption, 2013.

M. Zhang and O. E. Gjorv, PENETRATION OF CEMENT PASTE LIGHTWEIGHT AGGREGATE, vol.22, pp.47-55, 1992.

F. Rodrigues, M. T. Carvalho, L. Evangelista, and J. D. Brito, Physical-chemical and mineralogical characterization of fine aggregates from construction and demolition waste recycling plants, J. Clean. Prod, vol.52, pp.438-445, 2013.

A. Bordy, A. Younsi, B. Fiorio, and S. Aggoun, Influence of drying conditions on hydration of cement pastes with substitution of Portland cement by a reclycled cement paste fine, ICOME'16 Int. Conf. Mater. Energy, pp.1-6, 2016.

S. Omary, E. Ghorbel, and G. Wardeh, Relationships between recycled concrete aggregates characteristics and recycled aggregates concretes properties, Constr. Build. Mater, vol.108, pp.163-174, 2016.

, Tests on granulats in concrte: measurment of total water absorption of crushed sand, 2011.

T. Le, G. L. Saout, E. Garcia-diaz, D. Betrancourt, and S. Rémond, Hardened behavior of mortar based on recycled aggregate: Influence of saturation state at macro-and microscopic scales, Constr. Build. Mater, vol.141, pp.479-490, 2017.

M. Mechling, A. Lecomte, and K. Merriaux, Mesure de l'absorption d ' eau des additions min rales des b tons par vaporom trie, Matériaux Constr, vol.36, pp.32-39, 2003.

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, Constr. Build. Mater, vol.98, pp.662-670, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01470407

V. W. Tam, X. F. Gao, C. M. Tam, and C. H. Chan, New approach in measuring water absorption of recycled aggregates, Constr. Build. Mater, vol.22, pp.364-369, 2008.

A. D. Tegguer, Determining the water absorption of recycled aggregates utilizing hydrostatic weighing approach, Constr. Build. Mater, vol.27, pp.112-116, 2012.

A. Z. Bendimerad, E. Roziere, and A. Loukili, Combined experimental methods to assess absorption rate of natural and recycled aggregates, Mater. Struct. Constr, vol.48, pp.3557-3569, 2015.

A. D. Tegguer, Determining the water absorption of recycled aggregates utilizing hydrostatic weighing approach, Constr. Build. Mater, vol.27, pp.112-116, 2012.

J. Mills-beale, Z. You, R. C. Williams, and Q. Dai, Determining the specific gravities of coarse aggregates utilizing vacuum saturation approach, Constr. Build. Mater, vol.23, pp.1316-1322, 2009.

D. Zhang, Z. Li, J. Zhou, and K. Wu, Development of thermal energy storage concrete, Cem. Concr. Res, vol.34, pp.927-934, 2004.

E. Khoury, B. Cazacliu, and S. Remond, Impact of the initial moisture level and pre-wetting history of recycled concrete aggregates on their water absorption, Mater. Struct. Constr, vol.50, pp.1-12, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01613413

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, Constr. Build. Mater, vol.154, pp.752-762, 2017.

H. Maimouni, S. Remond, F. Huchet, P. Richard, V. Thiery et al., Quantitative assessment of the saturation degree of model fine recycled concrete aggregates immersed in a filler or cement paste, Constr. Build. Mater, vol.175, pp.496-507, 2018.

E. Khoury, Maîtrise de l'eau efficace dans les bétons de granulats recyclés, 2018.

. Nf-en-12620+a1, Granulats pour béton, 2008.

, Béton -Spécification, performance, production et conformité, 2014.

E. Khoury, W. Ambrós, B. Cazacliu, C. H. Sampaio, and S. Remond, Heterogeneity of recycled concrete aggregates, an intrinsic variability, Constr. Build. Mater, vol.175, pp.705-713, 2018.
URL : https://hal.archives-ouvertes.fr/hal-02428631

F. M. Khalaf and A. S. Devenny, Recycling of Demolished Masonry Rubble as Coarse Aggregate in Concrete: Review, J. Mater. Civ. Eng, vol.16, pp.331-340, 2004.

J. F. Lamond, Removal and Reuse of Hardened Concrete -ACI 555-01, ACI Comm. 555, pp.1-26, 2001.

F. Debieb, L. Courard, S. Kenai, and R. Degeimbre, Mechanical and durability properties of concrete using contaminated recycled aggregates, Cem. Concr. Compos, vol.32, pp.421-426, 2010.

I. M. Krieger and T. J. Dougherty, A Mechanism for Non-Newtonian Flow in Suspensions of Rigid Spheres, Trans. Soc. Rheol, vol.3, pp.137-152, 1959.

T. Sedran, . Ecole-nationale, . Ponts, and . Chaussees, Rhéologie et rhéomètrie des bétons. Application aux bétons autonivelants, 1999.

F. D. Larrard, Structures granulaires et formulation des bétons, Etudes Rech. Des Lab. Des Ponts Chaussées. OA, vol.34, 2000.

H. J. Brouwers, The work of Powers and Brownyard revisited: Part 1, Cem. Concr. Res, vol.34, pp.1697-1716, 2004.

R. Ben-aïm and P. L. Goff, Effet de paroi dans les empilements désordonnés de sphères et application à la porosité de mélanges binaires, Powder Technol, vol.1, pp.80006-80009, 1968.

T. W. , K. E. , and B. , Calculating the Packing Density of Grain Mixtures, Aufbereit. Process, vol.18, pp.603-608, 1977.

H. Huan, L. Courard, E. Pirard, . Fr, and . Michel, SHAPE ANALYSIS OF FINE AGGREGATES USED FOR CONCRETE, vol.35, pp.159-166, 2016.

I. Mehdipour and K. H. Khayat, Understanding the role of particle packing characteristics in rheo-physical properties of cementitious suspensions: A literature review, Constr. Build. Mater, vol.161, pp.340-353, 2018.

K. H. Khayat, C. Hu, and J. M. Laye, Influence of aggregate Grain-Size Distribution on Workability of Self-Consolidating Concrete, Int. Symp. High Perform. Concr. -Work. Strength Durab, vol.1, pp.641-658, 2000.

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

F. Mahaut, S. Mokéddem, X. Chateau, N. Roussel, and G. Ovarlez, Effect of coarse particle volume fraction on the yield stress and thixotropy of cementitious materials, Cem. Concr. Res, vol.38, pp.1276-1285, 2008.

Z. Toutou and N. Roussel, Multi scale experimental study of concrete rheology: From water scale to gravel scale, Mater. Struct. Constr, vol.39, pp.189-199, 2006.

D. A. Williams, A. W. Saaka, and H. M. Jennings, The influence of mixing on the rheology of fresh cement, Cem. Concr. Res, vol.29, pp.1491-1496, 1999.

M. Guerinet, N. Roussel, M. Moranville, J. Yammine, and M. Chaouche, From ordinary rhelogy concrete to self compacting concrete: A transition between frictional and hydrodynamic interactions, Cem. Concr. Res, vol.38, pp.890-896, 2008.

H. Hafid, G. Ovarlez, F. Toussaint, P. H. Jezequel, and N. Roussel, Assessment of potential concrete and mortar rheometry artifacts using magnetic resonance imaging, Cem. Concr. Res, vol.71, pp.29-35, 2015.

P. J. Nixon, Recycled concrete as an aggregate for concrete -a review. First state-of-the-art report RILEM TC-37-DRC., Matériaux Constr, vol.11, pp.371-378, 1978.

B. M. Vinay-kumar, H. Ananthan, and K. V. Balaji, Experimental studies on utilization of coarse and finer fractions of recycled concrete aggregates in self compacting concrete mixes, J. Build. Eng, vol.9, pp.100-108, 2017.

C. S. Poon, Z. H. Shui, L. Lam, H. Fok, and S. C. Kou, Influence of moisture states of natural and recycled aggregates on the slump and compressive strength of concrete, Cem. Concr. Res, vol.34, pp.31-36, 2004.

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

L. Evangelista and J. Brito, Mechanical behaviour of concrete made with fine recycled concrete aggregates, Cem. Concr. Compos, vol.29, pp.397-401, 2007.

C. Paper, S. O. Universit, G. W. Universit, and E. G. Universit, Influence de l ' incorporation des granulats recyclés de démolition sur les propriétés physiques et mécaniques des bétons fluides Influence de l ' incorporation des granulats recyclés de démolition sur les propriétés physiques et mécaniques des bétons flu, 2015.

P. R. Rangaraju, J. Olek, and S. Diamond, An investigation into the influence of inter-aggregate spacing and the extent of the ITZ on properties of Portland cement concretes, Cem. Concr. Res, vol.40, pp.1601-1608, 2010.

Z. Zhao, S. Remond, D. Damidot, and W. Xu, Influence of fine recycled concrete aggregates on the properties of mortars, Constr. Build. Mater, vol.81, pp.179-186, 2015.

R. Kajaste and M. Hurme, Cement industry greenhouse gas emissions -Management options and abatement cost, J. Clean. Prod, vol.112, pp.4041-4052, 2016.

G. Habert and N. Roussel, Study of two concrete mix-design strategies to reach carbon mitigation objectives, Cem. Concr. Compos, vol.31, pp.397-402, 2009.

G. Habert and N. Roussel, Comment concevoir un béton ayant un faible impact environnemental, XXVIèmes Rencontres Univ. Génie Civ. AUGC, 2008.

C. Galbenis and S. Tsimas, Use of construction and demolition wastes as raw materials in cement clinker production, China Particuology, vol.4, pp.60241-60244, 2007.

K. Kulisek, M. Fridrichova, and J. Brauner, Utilización de hormigones reciclados en la industria del cemento, Cem. Hormigón, pp.26-50, 2006.

C. Diliberto, A. Lecomte, J. Mechling, L. Izoret, and A. Smith, Valorisation of recycled concrete sands in cement raw meal for cement production, Mater. Struct, vol.50, p.127, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01885967

M. V. Florea, Z. Ning, and H. J. Brouwers, Activation of liberated concrete fines and their application in mortars, Constr. Build. Mater, vol.50, pp.1-12, 2014.

L. Oksri-nelfia, Incorporation de fines issues de granulats recyclés dans la fabrication de nouveaux liants hydrauliques, 2015.

L. Oksri-nelfia, P. Mahieux, O. Amiri, P. Turcry, and J. Lux, Reuse of recycled crushed concrete fines as mineral addition in cementitious materials, Mater. Struct, vol.49, pp.3239-3251, 2016.
URL : https://hal.archives-ouvertes.fr/hal-02316927

A. Bordy, A. Younsi, S. Aggoun, and B. Fiorio, Cement substitution by a recycled cement paste fine: Role of the residual anhydrous clinker, Constr. Build. Mater, vol.132, pp.1-8, 2017.
URL : https://hal.archives-ouvertes.fr/hal-02153918

M. E. Bouarroudj, S. Remond, F. Michel, Z. Zhao, D. Bulteel et al., Use of a reference limestone fine aggregate to study the fresh and hard behavior of mortar made with recycled fine aggregate, Mater. Struct, 2019.

A. Lecomte, The Measurement of Real and Virtual Packing Density of Soft Grains, Mater. Struct, vol.39, pp.63-80, 2007.

F. De-larrard and M. Buil, Granularité et compacité dans les matériaux de génie civil, Mater. Struct, vol.20, pp.117-126, 1987.

A. Schwartzentruber and C. Catherine, La mdthode du mortier de bdton quivalent ( MBE ) -Un nouvel outil d ' aide h la formulation des bdtons adjuvantds, Mater. Struct, vol.33, pp.475-482, 2000.

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, Cem. Concr. Res, vol.95, pp.56-64, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01784845

F. De-larrard and A. Belloc, The influence of Aggregate on the compressive Streght of Normaland hight-Stregth Concrete, ACI Mater. J, p.99, 1997.

Z. Zhao, S. Remond, D. Damidot, and W. Xu, Influence of fine recycled concrete aggregates on the properties of mortars, Constr. Build. Mater, vol.81, pp.179-186, 2015.

A. Lecomte, F. De-larrard, and J. M. Mechling, Résistance à la compression de bétons hydrauliques au squelette granulaire non optimisé, Bull. Des Lab. Des Ponts Chaussees, 2001.

D. Dao, Multi-)recyclage du béton hydraulique, 2012.

. Astm-c, Standard test method for density, relative density (spe-cific gravity), and absorption of fine aggregate, pp.128-132, 2004.

P. Hedenus, M. Strømme-mattsson, G. A. Niklasson, O. Camber, and R. Ek, Characterisation of instantaneous water absorption properties of pharmaceutical excipients, Int. J. Pharm, vol.202, pp.141-149, 2000.

M. Strømme-mattsson, P. Hedenus, G. A. Niklasson, and R. Ek, A new method of characterising liquid uptake within particles over short time periods, Int. J. Pharm, vol.199, pp.179-185, 2000.

B. Widom, Random Sequential Addition of Hard Spheres to a Volume, J. Chem. Phys, vol.44, p.7, 1966.

S. Westermarck, Use of Mercury Porosimetry and Nitrogen Adsorption in Characterisation of the Pore Structure of Mannitol and Microcrystalline Cellulose Powders, Granules and Tablets, 2000.

S. Westermarck, A. M. Juppo, L. Kervinen, and J. Yliruusi, Pore structure and surface area of mannitol powder, granules and tablets determined with mercury porosimetry and nitrogen adsorption, Eur. J. Pharm. Biopharm, vol.46, pp.61-68, 1998.

E. Guerin, P. Tchoreloff, B. Leclerc, D. Tanguy, M. Deleuil et al., Rheological characterization of pharmaceutical powders using tap testing, shear cell and mercury porosimeter, Int. J. Pharm, vol.189, pp.91-103, 1999.

S. Rémond, Compaction of confined mono-sized spherical particle systems under symmetric vibration: A suspension model, Phys. A Stat. Mech. Its Appl, vol.337, pp.411-427, 2004.

K. E. Cheikh, S. Rémond, P. Pizette, Y. Vanhove, and C. , Discrete Element study of granular material -Bumpy wall interface behavior, Phys. A Stat. Mech. Its Appl, vol.457, pp.526-539, 2016.

K. E. Cheikh and S. Rémond, Effect of wall bumpiness on the behavior of sheared dry bidisperse granular material, Phys. A Stat. Mech. Its Appl, vol.472, pp.1-12, 2017.

S. Rémond and J. L. Gallias, Simulation of periodic mono-sized hard sphere systems under different vibration conditions and resulting compaction, Phys. A Stat. Mech. Its Appl, vol.369, pp.545-561, 2006.

S. Rémond, J. L. Gallias, and A. Mizrahi, Characterization of voids in spherical particle systems by Delaunay empty spheres, Granul. Matter, vol.10, pp.329-334, 2008.

N. Roussel and P. Coussot, Fifty-cent rheometer" for yield stress measurements: From slump to spreading flow, J. Rheol, vol.49, pp.705-718, 2005.

V. H. Nguyen, S. Remond, and J. L. Gallias, Influence of cement grouts composition on the rheological behaviour, Cem. Concr. Res, vol.41, pp.292-300, 2011.

P. Diederich, Contribution à l'étude de l'influence des propriétés des fillers calcaires sur le comportement autoplaçant du béton, 2010.

W. Chen, H. Of, and . Cement, , 2007.

A. Bordy, Influence des conditions thermo-hydriques de conservation sur l ' hydratation de matériaux cimentaires à base d ' une fine recyclée, 2016.

V. Baroghel-bouny and ;. Chaussees, Caractérisation microstructurale et hydrique des pâtes de ciment et des bétons ordinaires et à très hautes performances, 1994.

A. Younsi, Carbonatation de bétons à forts taux de substitution du ciment par des additions minérales Akli Younsi To cite this version, 2012.

D. P. Bentz, Modeling the influence of limestone filler on cement hydration using CEMHYD3D, Cem. Concr. Compos, vol.28, pp.124-129, 2006.

D. P. Bentz and P. E. Stutzman, Curing, hydration, and microstructure of cement paste, ACI Mater. J, vol.103, pp.348-356, 2006.