Pavement recycling provides important savings in road construction compared to conventional options. It also mitigates environmental impacts, diminishes the use of hydrocarbon binders and reduces transport during the building process. The European research project PARAMIX aims to improve the techniques of hot mix recycling in plant and cold-mix in situ recycling so as to increase the amount of reclaimed asphalt and develop competitive high-quality road pavement rehabilitation techniques. The project focuses on the design and performance of the mixes, on more suitable production techniques, improved machinery, and on new models for the design and life cycle assessment. Test sections have been constructed based on the main results obtained. This paper concerns the laboratory study carried out within this European Project for cold-in situ recycling on the following aspects: emulsion improvement so that the additional water needed in these mixtures could be reduced as well as the immediate cohesion increased, evaluation of the influence of different compaction methods in order to adapt this laboratory step to the final mixture results, and definition of new mixture design procedures for cold in-situ recycling. For the covering abstract see ITRD E121480.