Daily Archives30/08/2022 - Bitafal

An investment of 10 million dollars will be made to rehabilitate a section of route 8 that crosses the city of Treinta y Tres, between routes 17 and 19

In the coming weeks, the technicians from the Roads Directorate will be finalizing the executive project for the work. Once the project is finished and the details of the intervention are known, it will be announced to the departmental authorities and public opinion, informed Minister José Luis Falero.

The hierarch highlighted the progress in the construction of the bridge that will link La Charqueada with the town of Cebollatí in the department of Rocha. The work not only involves the construction of the bridge, but also the rehabilitation of the accesses by Route 91.

Source: https://www.gub.uy/ministry-transport-works-public/communication/news/will-be-rehabilitated-section-route-8-passes-thirty-three

The extension of the double track from Canelones to Durazno will improve traffic conditions and provide safety to users

Currently the double track runs from Montevideo to Canelones. Its extension will be executed in four sections. The first goes from Canelones to the town of Mendoza. The second goes from Mendoza to Florida, the third from Florida to Sarandí Grande and the last from Sarandí Grande to Durazno.

The estimated investment is about 300 million dollars. The duplication of the section that goes from Florida to Sarandí Grande is carried out through a rehabilitation, maintenance and financing contract (Cremaf). This financial instrument streamlines instrumentation times and speeds up the start of works. The tasks are executed in two years and their maintenance is guaranteed for the following 10.

Source: https://www.gub.uy/ministry-transport-works-public/communication/news/are-awarded-four-spans-to-duplicate-ruta-5

A highly modified asphalt (HIMA) was used to cover a section of Route 1

Four years ago, Traxpalco carried out a coating on the concrete pavement of Route 1 to improve the IRI and the general surface condition of the section. The excellent results are felt when one drives on it and that is why an extension is being carried out with a project similar to the one reported in the Bulletin N° 94

On this occasion, a section of approximately one km of an Asphalt Arena was made, in which a highly modified asphalt with SBS polymer was used (HIMA) in a thickness of 20 to 30 mm. It is to be expected a greatly improved performance of this SAMI (Stress Absorbing Membrane Interface) type layer, since the asphalt HIMA It is much more effective than the usual modified asphalts (type AM3) to attenuate the rise of cracks and joints.

The asphalt HIMA It was prepared following the specifications proposed by the Florida Department of Transportation (USA), which is one of the states with the most experience in the use of this new technology. They are evaluated for performance at 76°C in the MSCR test that is carried out with the dynamic shear rheometer, contemplating a maximum viscosity so that mixing and compaction are similar to those used with type modified asphalts. AM2 Y AM3. This could be verified on site since both temperatures were maintained and there was no difference either during the preparation of the mix or when laying it.

The section in question with Arena Asfalto was carried out at km 54 of the roadway beyond Route 1 in the Libertad bypass. On it, the regularizing layer will be applied with a CAD 12 mixture and then an F10 as tread, both made with modified asphalt type AM3. In the vicinity of the Liberty Free Zone, it will also take place on an Asphalt Arena made with AM3 a CAD 12 leveling machine with asphalt HIMA to evaluate the performance of a usual dense mix (with less asphalt content compared to an Asphalt Sand) in attenuating the reflection of joints and cracks.

We will be monitoring the various sections executed to confirm the benefits of this technology that is increasingly being developed worldwide.