OVERVIEW OF TECHNOLOGIES FOR OBTAINING COLD EMULSION-MINERAL MIXTURES

Abstract

The use of cold emulsion-mineral mixture (CBEM) instead of hot asphalt concrete mixture (HMA) has several advantages. Benefits include saving materials and reducing energy consumption, protecting the environment and reducing costs. Cold mixture obtained by mixing mineral aggregate with bitumen emulsion. Despite the efforts made over the last few decades to improve and develop CBEM, certain disadvantages remain that make it inferior to HMA, leading to the limitation or minimization of its use. However, the development of CBEM for road construction, reconstruction and maintenance is constantly gaining interest in both the industrial and research sectors of road construction. Researchers in the field of road construction are constantly looking for ways to reduce energy consumption, greenhouse gas emissions and increase cost efficiency. Cold emulsion-mineral mixture is the result of research in this direction during the last few decades. CBEM is a mixture obtained by mixing bitumen emulsion, aggregates and filler at ambient temperature. Using CBEM, it is possible to achieve 95% energy savings compared to the production of HMA. The disadvantages of cold mixture are also obvious. Because the water must evaporate from the bitumen emulsion for the bitumen to adhere to the aggregates, the cold mix may take several weeks to reach its full strength. This can result in lower initial strength and high porosity compared to conventional hot mix asphalt. Also, because of the water in the mix, potential moisture damage and durability are concerns. As a result, CBEM was rarely used as a structural layer of the roof.