Cold bituminous mixes
These are asphalt mixes that are manufactured and applied at room temperature, without the need of heating the aggregates or the bituminous binder, using asphalt emulsions. Depending on the composition and type of mixture, at CEPSA we have designed different emulsions to optimize the performance of the mixture.
Close-graded cold asphalt mixes
Close-graded cold asphalt mixes are composed of well-graded aggregates with a high proportion of fine material, and stable emulsions without fluidizers. They also need pre-packing water to distribute the emulsion evenly over the entire aggregate surface. These mixes have a low void content (4-8%) and high mechanical strength, due to the internal friction of the mineral skeleton and the cohesion of the mortar formed by the finer fraction and the residual binder of the emulsion. The emulsion recommended for this application complies with the specifications set out in the UNE-EN 13808.
Open-graded cold asphalt mixes
Open-graded cold asphalt mixes are the result of the combination of coarse aggregates with a bituminous emulsion and occasionally additives, the manufacturing process of which does not require to heat the components beforehand. The mixture can be stored and should be able to be spread and compacted at room temperature. The emulsions recommended for this application comply with the specifications set out in the UNE-EN 13808 (cationic) and UNE 51603 (anionic) standards.
