In the last two decades, a large amount of references regarding cement/waste systems have been published. The information reported in these references has been focused on two main topics: inertization of wastes using cementitious materials as binders through solidification/stabilization techniques (typically low binder dosages), and reutilization of non hazardous wastes after mixing with cementitious materials (typically low waste dosages).The information contained in near 3,000 cement/waste products collected in a previous work in an Access database has been evaluated according to the following points: level of identification of composition of products (types of components in product formulation—waste, non-waste materials, and water-, elemental and oxides composition of components and physical properties of components), physical and mechanical properties of products, and leaching tests (types of tests and chemistry of the leachate of waste and products).Wastes have been classified according to the European Waste Catalogue (EWC). From the studied data, it can be found a certain lack of information on the formulations of the products (e.g. water content is not given in 28% of products). With respect to engineering properties, unconfined compressive strength is reported in 70% of products; nevertheless, very few data for setting time have been found (3–4% of the products). The main leaching tests performed to wastes and products are European (DIN 38414-S4) and US (USEPA EP-tox and TCLP) standard tests and the main elements measured in the leachate are As, Ca, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb and Zn.Conclusions related to the difficulties, which have been found in the literature data to get a useful description of cement/waste mixings, mechanical properties and environmental behaviour will be explained.