MIXTURES WARM: 50 ° C at mixing and compaction less.
Following the way of introducing new technology in road construction in the country, Group BITAFAL made a successful stretch of warm mixtures with Techint SACI Route 9. This time was used on CCS S12 mixture envisaged for section a double innovation and a binder modified crumb rubber was used (BITAFLEX AMC 50) with a reducing surfactant additive mixing temperatures and compaction.
Fue posible bajar ambas temperaturas en 50°C, mejorando los promedios de densidad del tramo respecto al realizado sin aditivo a pesar que durante la jornada de prueba la temperatura máxima ambiente fue de 12°C. Por otra parte se lograron aumentos de productividad de la planta y ahorros verificados de Fuel Oil de un 27% con los cuales prácticamente se repaga el uso del aditivo.
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They accompanying the development of technical research of both companies, the MTOP and an engineer of the supplier of the additive which conducted an extensive temperature control and final compaction work by an electromagnetic hydrometer.
The density values were never below 97%, reaching values of 99.5% in some points, quite superior to those evaluated in the section made without additive. Lubricity the surfactant imparts to the binder as well as an improvement in the adhesiveness between the aggregate and the binder contribute to the economy and efficiency during production and paving mixtures.
The following are some of the advantages of incorporating technology tibias mixtures:
- Lower operating cost in factory production due to fuel savings
- Increased productivity at the plant, due to mix optimization and ease of mixing the aggregate and binder
- Greater workability and compactability of the mixture during its extended
- Lower emissions of harmful pollutants into the air, to be applied at lower temperatures
- More time between the production of the mixture and its application in the field, which can be translated within reach for longer trucks, and the ability to still compact with 6-8 hours between manufacture and compaction field mixture
- The possibility of producing asphalt mixtures during cold weather (below 8 ° C)
- The possibility of eliminating other bonding agents such as lime or an adhesion improver, and that the additive is an adhesion promoter
- More safety and comfort for workers in the plant and in the field, due to the reduction of emissions and harmful particles in the air
- The possibility of constructing a pavement with longer lifetime, less oxidized from the beginning, and lower thermal segregation at the time of its spread.
