[en] Cementation is a widely applied technique for the conditioning of low- and intermediate- level radioactive wastes. However, specific issues have still to be addressed, such as the limitation of adverse cement-waste interactions which may affect the quality of the resulting solidified waste form, or the understanding and prediction of long-term properties of the waste packages and cement barriers. There is also a need for safe processes minimizing the production of secondary wastes. This conference has been organized around 11 topics: 1) adsorption of radionuclides, 2) electrokinetics measurements and modeling, 3) determination of transport parameters in saturated materials, 4) irradiation and gas transport in concretes, 5) microbiological attacks, 6) calcium sulfo-aluminate cements, 7) miscellaneous binders, 8) geo-polymers, 9) low pH cements, 10) degradation of cementitious materials: coupling chemistry, transport and mechanics, and 11) interactions between cements and other materials