The purpose of this research is to experimentally determine the long-term properties of several new cement composites with unconventional additives - borosilicate lamp glass filler, montmorillonite mineral additive, and polyvinyl alcohol (PVA) fibres. Test specimens were prepared and subjected to constant compression load in a permanent temperature and level of moisture. The investigated laboratory determined properties included the compressive strength values, shrinkage strain, uniaxial compressive creep strain values and then the following parameters were calculated – creep coefficient, specific creep, creep modulus. The obtained experimental results showed that for the various mixes of new cement composites the creep coefficient was the same as for normal strength cement composite, ranging from 0.2 to 3; specific creep values were 10-85 microstrain /MPa; creep modulus was 15-105 GPa. The experimental study proves that new elaborated mixes can be successfully used in the production of concrete, thus potentially decreasing the use of cement, which would lead to a reduction of carbon dioxide released into the atmosphere.