Energy Saving Additives《RAA WAC》for Production of Warm Asphalt Concrete

摘要

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 Jl 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. It is shown that additives of 《RAA WAC-1》and 《RAA WAC-2》also, as well as Evotherm, significantly increase coupling of bitumen with mineral materials from sour breeds. Influence of the developed additives on physicomechanical characteristics of asphalt concrete at decrease in temperature of preparation of mix is investigated. It is shown that use of additives of 《RAA WAC-1》and 《RAA WAC-2》allows to reduce temperature of preparation of asphalt concrete mix to 120°C and to receive a composite with the properties meeting requirements of normative documents for hot asphalt concrete. It is established that long water resistance (up to 90 Days) is higher than warm asphalt concrete with an additives of the series 《RAA WAC?, than the traditional hot. The conducted researches showed possibility of decrease in temperature of consolidation of asphalt concrete mix to 100-110°C that will allow to increase the radius of transportation of asphalt concrete mix and to prolong a construction season.