Abstract: According to the climatic conditions in the Central European countries road pavement structure should be moisture and frost resistant. This problem is especially important for pavements rehabilitated in the cold recycling technology. Determining the physical and mechanical properties as well as moisture and frost resistance depending on the binder and filler contents is an essential element before its introduction to road building. The tests were performed on mineral recycled base mixes with foamed bitumen, in which the material from the existing layers was used. The bitumen binder
was added to the recycled material in the amount of 2,0% to 3,5%, and hydraulic binder (cement) of 1,0% to 2,5% with changes every 0,5% at variable. Investigated the effect of different binder contents on the dry and soaked indirect tensile strength (ITS), tensile strength retained (TSR) and indirect tensile resilient modulus of a recycled mixes. The measurements of resistance to the effects of water and frost according to the AASHTO T283 method and the resistance to low temperature cracking according to the PANK 4302 methods confirmed that used foamed bitumen in the cold
recycling technology is resistant to these climatic factors. The results obtained were subjected to the optimization process, which allowed to state that with the application of 2,5% foamed bitumen and 2,0% of cement the base has the required physical and mechanical properties as well as water and frost resistance according to the applied criteria.
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