recently we conducted for the company Techint S.A.C.I. one graveled with our double spreaders in a new roundabout built between Routes 10 and 16.
The work was done in a couple of days only because of the great versatility of these self-propelled equipment to work on curves of small radii. They consisted of a primer emulsion Print 50, and then a modified double emulsion CHIPSEAL Irrigation 65 P25. Quality of work, both dosage and overlap could be seen both as technicians of the company Techint and the MTOP.
We attach some pictures of them to appreciate the quality of the terminations.
The development of technology Capeseal continues to grow in Uruguay.
recently we visited the stretch of Route 55 Capeseal in the company by Emilio Alvarez Diaz S.A. and could verify the quality of surface finish achieved with the cold microsurfacing on a simple surface treatment.
The microsurfacing was executed by the company R & K Engineers using Bitaflex Micro emulsion 62 P25 was adjusted to regulate the cutting time due to weather and the type of water used conditions.
The result is visible, complete homogeneity across the surface, both in appearance and in the macrotexture is achieved. Besides excellent adhesion it is verified by the simple surface treatment.
The company is confident Workvial Bitafal Rentalsfor replacing joints 4 bridges from Route 6 at the height of San Gabriel. The works are being executed with average yields of 12 linear meters per day with a high quality finish.
All jobs are running full board cleaning and repairing the edges with high strength mortar. The gasket being manufactured in situ with 3mm plate member, precoated stone asphalt sealer type SA30 as it indicated in standard IRAM 6838. Termination and sealing surface is being prepared with the same sealer and selected gravillín.
Should you have any questions or need quotation we invite you to communicatebitafal@bitafal.com.uy
emulsion 50 PRINT BITAFAL Hoping it will be of interest to other municipalities, we extend the invitation to participate, you can write to
Anticipating the arrival of the heat and low humidity environment to multiply the effect of fine suspended, and have been conducting several test sections in different traffic conditions to evaluate their performance and durability.
Were tested dosages of 0.6 to 1.0 L / m2, with the optimum performance for dust control is at low doses and releasable traffic almost immediately and are not accumulation zones emulsion. For all these tests has been carried out prior sweep the surface and has cared moisture in it was low for better performance of the emulsion.
In one of the test sections was used as 2-6 mm gravillín immediate release protection traffic without the gravillín interfere with curing or penetration depth since the absorption rate at the base is very fast. With this technique it is possible to urban jobs without cutting the road in no time.
After heavy rains last week some edges of the test sections were eroded by rain which allowed us to check the depth of action of the PRINT 50 and enclosed in photographs.
We estimate that the lifetime of the dust treatment performed with this emulsion, due to the depths reached, must be above 12 months.
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.
Since 2011, SPECIAL BITAFAL ASFALTOS, It has expanded its line emulsions seeking to adapt to climatic conditions, use and traffic which are undergoing different technologies.
The specification used in our country for modified emulsions is the IRAM 6698 standard: Modified cationic asphalt emulsions. In it, to determine the degree of modification, the minimum requirement for elastic torsional recovery is 12%, a value that we consider extremely low since a conventional asphalt cement has about 8%. That is why we have specified two ranges of elasticity for all types of modified emulsions manufactured, one with a minimum of 25% and another with 40% elastic torsional recovery and three types of asphalt penetration ranges depending on the application and thermal gradient in the area to execute the work.
Then we attach an indicative table for selection of emulsions Irrigation
The emulsion designed for the highest demands was the emulsion BITAFLEX RIEGO 65 P40 D, Which is manufactured with an asphalt hard penetration of 50 to 80 dmm (and a viscosity above 2000 cP as determined in a study of sections required not presented exudates) and add a high amount of polymer achieve greater torsional elastic recovery 40%.
Already there are several sections that have used this emulsion on domestic routes (Route 26, Route 15, Route 8, Route 5, etc.) and their use is becoming more common because of the noticeable advantages of their use. On the one hand, it ensures good performance of works even when not run in optimal temperature conditions or performance and moreover withstand high traffic demands and climatic giving high durability to sections executed.
this emuslión was recently applied in the Chipping performed by Served en Route 8 with excellent performance, withstanding high temperatures and traffic, with minimal detachments.
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