The paper deals with the design of recycled asphalt mixtures for the bound base layers of pavements. These mixtures are made up of almost 100% reclaimed asphalt mixture adjusted by crushing to a suitable wide fraction. Suitable binder added to the recycled asphalt mixture or heated to a low temperature or is processed by a combination of these technological procedures. The research described in the contribution follows on from the newly created standard ČSN 73 6147 “Recycling of structural layers of roads in the cold”.