Energy Saving Additives «RAA WAC» for Production of Warm Asphalt Concrete

For the last 15-20 years in Europe and in the USA the new technologies allowing to reduce temperature of hashing and consolidation of the asphalt concrete mix prepared on viscous bitumen by 20-40 °C were developed. Thus characteristics of a covering in comparison with use of traditional hot asphalt concrete don't worsen.One of ways of achievement of effect is application of special chemical additives.Results of researches of influence of the additives developed by authors together with the enterprise of "Selena" for production of warm asphalt concrete of the series «RAA WAC» on properties of bitumen and asphalt concrete in comparison with a known additive of Evotherm J1 are given in the real work.It is established that the studied additives at increase of their concentration in knitting a little reduce conditional viscosity of bitumen, raise tensile properties at a temperature of 25 °C, practically don't influence softening temperature.