FIRST RECYCLING OF PAVEMENTS MADE IN PLANT WITH FOAMED ASPHALT

FIRST RECYCLING OF PAVEMENTS MADE IN PLANT WITH FOAMED ASPHALT

The new technology is being implemented by the company CVC in the PPP Circuit 6 project

The designed structural package includes a stabilized base with foamed asphalt and an asphalt road surface with modified asphalt type PG 70-28 in different thicknesses as required by each section of the project. The particularity of this work is that a material stabilized with foam asphalt is used, produced in a WIRTGEN KMA 220 fixed plant with material extracted from the Route itself and with the addition of virgin material to comply with the specification of a BSM 1 according to the TG specification. -2 from South Africa.

Once the material is mixed at the plant, it is transferred to the construction site and laid by means of a sequence of two pavers and compactors to achieve the project thicknesses and adequate design densities. Between each paver a padfoot compactor enters and after the last layer a pair of tandem and pneumatic compactors give the appropriate density and surface finish.
Subsequently, a protective irrigation with emulsion is applied IRRIGATION BITAFAL 65 which remains open to traffic until the execution of a semi-dense mix made with asphalt modified with polymers of the type PG 70-28.
Stabilized with foamed asphalt has the particularity that it is a semi-bound granular material, so the failure method is rutting and not fatigue. Therefore, once the pavement reaches a rut of 10mm, the existing mixture is milled and the same thickness is replaced and it is ready to continue supporting loads.
The Circuit 6 project involves the rehabilitation of 78 km of National Route No. 6 and includes the duplication of roads in several sections, the widening and rehabilitation of the existing pavement structures, which must be maintained for 20 years by the concessionaire company. Big Blade Consortium. Several sections are made with the aforementioned technology and other sections are made by in situ recycling with foamed asphalt.
We are grateful to the company for the trust provided for the supply of emulsions and modified asphalts for your project.
We hope that this new technology will have an exponential development in our country.
CAPE SEAL ON ROUTE 27

CAPE SEAL ON ROUTE 27

A new rehabilitation of a route of our road network with pavement recycling and Cape Seal

The GRINOR company began the rehabilitation works of 48 km on Route 27, Mr. Mario Heber, in the Department of Rivera. They started with a base surcharge, recycled in 20 cm with Portland cement and then a Cape Seal as a rolling layer. The progress at the moment is almost the entire recharged section, and about 6 km with the surface treatment on the recycled material where the company has been able to demonstrate the surface quality both in rolling comfort as well as in the resistant structure achieved.

The surcharge made is 15 cm, after which it is remixed in 20 cm together with the old existing surface treatment on the road. The refining works after recycling with cement are carried out by means of a motor grader with automatic control, then a curing irrigation with emulsion is carried out. IRRIGATION BITAFAL 65 along with sand to provide a suitable provisional rolling and maintain the humidity of the cemented material, until the execution of the micro-surfacing.

Simple bituminous treatment is being carried out with emulsion BITAFLEX IRRIGATION 65 P12 with 15-19 mm aggregate to then complete the Cape Seal using a cold microagglomerate made with emulsion BITAFLEX MICRO 62 P40. This last emulsion was formulated specifically for this work, adjusting the cutting times and increasing the polymer content since it is the emulsion exposed to traffic and weather.
The execution activities of the Cape Seal will be suspended during the winter closure, and it is planned to continue and finish them next spring.

GRINOR incorporated a new truck-mounted Romanelli UHR 700 unit with a capacity of 7 m3 of aggregates and 2,600 liters of emulsion for the execution of these works, which is producing an impeccable quality of cold microagglomerate.

The synergy between the recycling of pavements and the Cape Seal is increasingly convincing since the first sections carried out are still in excellent condition and without inconveniences of exudations or detachments that have often led to doubts about surface treatments such as wearing courses.
We hope that the successes of this technology will continue throughout our country.

CONFERENCE ON SURFACE TREATMENTS AT THE QUIMIKAO CONGRESS (MEXICO)

CONFERENCE ON SURFACE TREATMENTS AT THE QUIMIKAO CONGRESS (MEXICO)

We tell you about our participation in the 12th International QuimiKao Seminar in Los Cabos.

From May 17 to 20, 2022, we participated in the biannual event developed by the QuimiKao company, on this occasion as exhibitors, where we emphasized the transformation process that our country is experiencing at the level of road infrastructure. The magnificent synergy experienced by stabilized bases and surface treatments was commented on, where one needs the other for a greater extension of the useful life of the road.

They commented on the great growth experienced by recycling and on-site stabilization teams in Uruguay, where we went from 0 to more than 30 teams in just 8 years, improving the quality of more than 2,500 kilometers of highways. This fact has marked a milestone at the national and regional level, which today allows us to apply surface treatments with a higher degree of certainty in terms of life expectancy. We also commented on the change process that Grupo Bitafal began towards emulsion performance specifications (EPG), which allow us to choose the level of polymerization of the emulsion for a given traffic and climate.

The seminar also had its deserved share of relaxation and integration, where we shared a morning soccer game and a day of walking around Cabo San Lucas. We thank the entire QuimiKao team for their generosity, their hospitality and for giving us the opportunity to spread the innumerable advantages that surface treatments present; and finally congratulate you for the successful completion of the seminar. We hope to see each other in future editions to continue learning together.

CILA 2022: LAST MONTH WITH SPECIAL DISCOUNT

CILA 2022: LAST MONTH WITH SPECIAL DISCOUNT

We are waiting for you from November 21 to 25 at the XXI CILA in Punta del Este

After several hours of dedication, the technical committee has completed the evaluation of all the job applications received from 23 countries, of which 351 have been approved and will form part of the material that will be delivered at the congress.

More than 75% of the stands are occupied by important international companies and the outdoor area for the exhibition of machinery has recently been increased.

Several Master Conferences of important technicians from Australia, Spain, USA and South Africa have already been confirmed. We will tell you more in future editions.

You can keep up to date with the news of the congress on the Twitter account @Cilaxxi like on facebook Cilaxxi

Don't be left out. Remember that until June 29 you can register at a reduced price.

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