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VIRTUAL COURSE “Surface treatments and asphalt primer”

VIRTUAL COURSE “Surface treatments and asphalt primer”

On Thursday, May 20 and Friday, May 21, we had the pleasure of attending the virtual course on "Surface treatments and asphalt primer" organized by the Bolivian company Quimitec Asfaltos. The webinar, by Prof. Edson Andrade and Ing. Daniel Zenteno, discussed important aspects on the execution of asphalt primer and surface treatments, developing the concepts and manufacturing procedures for emulsions and construction procedures for these techniques.

On Friday, Ing. Ignacio Kröger spoke about the importance of a good penetration in the primer. For this, the porosity and humidity conditions of the base, and the viscosity and strength of the binder were detailed. Likewise, the need to progressively eliminate the use of asphalt dilutes in paving in general and in priming specifically was discussed.

To summarize, the four main disadvantages presented by the dilutes are detailed below:

1) Contains volatile gases that are toxic to workers.

2) Impact on the greenhouse effect and reduction of the ozone layer.

3) It requires energy for heating, which in addition to being expensive, requires valuable time. It can also create a risk of overheating and explosion of tanks, like the two accidents we had in our country last year.

4) After 72 hours of applying a dilute type MC1, it still has between 55 and 85% of the solvent. Risk of softening binder of future treatment and oozing in summer.

The IMPRIMA 50 emulsion for its part is a mixture of asphalt and water, and this brings great technical and environmental advantages:
1) Quick release to traffic, without the need to prime with sand. This allows paving tasks to be carried out in the following 12 and 24 hours.

2) Low viscosity at room temperature (at 25 degrees it has the same fluidity as at 60 of the diluted). Quick loading of a sprinkler truck and without the need for heating.

3) Releases water to the environment instead of volatile organic compounds (less dangerous for workers and the environment).

4) It is compatible with other emulsions, therefore it does not generate inconveniences in its manipulation.

For more information about the performance comparison between the emulsion and the diluted primer, you can consult the technical work presented by Quim. Santiago Kröger at the IX Uruguayan Road Congress "Primer with emulsions: technical and environmental improvements."

https://bitafal.com.uy/wp-content/uploads/2017/10/9%c2%ba-CVU-Trabajo-Imprimaci%c3%b3n-con-emulsiones-mejoras-t%c3%a9cnicas-y-ambientales.pdf

We thank Quimitec Asfaltos for the invitation, and hopefully it will be the first of several collaborations between the two companies.

BITAFAL GROUP SAYS PRESENT AT THE 2020 SLURRY SYSTEMS WORKSHOP (# 2020SSWS)

BITAFAL GROUP SAYS PRESENT AT THE 2020 SLURRY SYSTEMS WORKSHOP (# 2020SSWS)

From January 20 to 23, 2020, the largest annual grout and micro-pavement workshop in the United States was held in Las Vegas, organized by the International Slurry Surfacing Association (ISSA). More than 450 professionals and experts from the road sector discussed the importance of surface treatments, their laboratory design, and the best practices for execution and control of works.

Surface treatments in the United States represent only 5% of its road network, but that small number in a country of enormous dimensions allows it to become one of the world leaders in this technology. The # 2020SSWS delves into the use of gravel, micro agglomerates, grouts, crack sealing, Capeseals, ultra fine mixes, etc. and the combination of these to extend the life cycle of the pavements.

The workshop presents the technical knowledge of experts who comment on the details that must be taken into account in the laboratory and on site, with tips for correctly applying the guidelines developed by ISSA (A105 and A143). Among the topics discussed could be highlighted:

- Care and controls in the laboratory to improve the design of micro-agglomerates.

- The physical and chemical foundations of the breaking and curing of special micro emulsions.

- The importance of fissure sealing to extend future treatments.

- Best construction practices for high-quality grouts and micro-agglomerates.

- Use of RAP in preservation techniques, among others.

In addition, the practical application of these foundations was carried out, carrying out small material testing sessions to determine the optimal mixing time in the laboratory and later real test sections with machines and complete work equipment.

Finally the online tool was presented to www.roadresource.org for the correct selection of the type of treatment with calculators to determine life cycle costs, annualized equivalent costs, remaining life and cost benefit. The goal of ISSA with this excellent website is to promote the selection of the right treatment, on the right path, at the right time ("The Right Treatment on the Right Road at the Right Time").

ADVANCES IN ROUTE 14

ADVANCES IN ROUTE 14

Road Circuit 3 advances according to the schedule foreseen in the rehabilitation of Route 14.

The “Circuit 3” Public-Private Participation project in charge of the COPASA and ESPINA consortium comprises the sections of Route 14 that go from the city of Mercedes to Sarandí del Yí. There are about 300 km of road rehabilitation using cold recycling technology with Portland cement and a subsequent 4 cm tread with the new modified asphalt BITAFLEX PG 70-28 provided by Grupo Bitafal.
In addition, the construction of a bypass to the city of Sarandí del Yí, the construction of two new traffic lanes in the city of Trinidad and the construction of a new section that connects Route 14 with Route 3 is planned.
This Route that crosses our country practically in the center has an important weight for the productive activity, foreign trade and the productivity of the companies that export through the port of Nuevo Palmira and especially for the pulp production plants of UPM and Montes del Plata. The situation of the same was diverse, sections in bituminous treatment and sections in asphalt layer with variable widths in all their extension.
The new project involves a widening in several sections together with their respective bridges, correction of the layout, planimetric improvements to increase the average speed as well as reinforcement of the structure and a smooth and safe running surface.
Currently there is a large deployment of teams and work fronts throughout the route. Many national companies are doing a great job in the construction of their respective sections or bridges. Idalar, Cujó, Incoci, Díaz Alvarez, Molinsur, CVC, Frivial, Saceem, Espina and other subcontractors are working at the same Impact.
All sections have a widening and recharging front for granular material, then a 20 cm cold recycling front with Portland, then an emulsion curing irrigation IRRIGATION BITAFAL 65 and gravel and finally a paving front applying a 4 cm thick asphalt mix with modified asphalt BITAFLEX PG 70-28.
In Bulletin # 108 of last November we anticipated some aspects of the work such as the incorporation of technology for example: 4 m rules for pavers, automatic control systems for motor graders, oscillating compactor rollers, among others, as well as safety and neatness of the works.
In addition to this, the works are being carried out at a very good pace and it is expected that by the middle of this year a large part of the sections will be completed.
Once again, we thank the Consortium and the contracting companies for the trust they have given to supply such an important input as modified asphalt and emulsions for a road work of such magnitude.
BITAFAL GROUP RESPONSIBLE CARE AND ENVIRONMENT

BITAFAL GROUP RESPONSIBLE CARE AND ENVIRONMENT

He December 3 We welcome the representative of the Responsible Care Program Environment and an external auditor of the LSQA, to conduct the audit on compliance with the requirements of this program, which the company is attached.

Was one more instance verification and enrichment of management, the positive result of it, stimulates continue working in this direction.

The purpose of the Program of Responsible Care Environment, is to manage the risks they are exposed the different actors involved in the management of chemicals, looking for continuous improvement and excellence in their interaction with the environment, occupational health and safety of employees and the community.

PRINT 50 AN ALLY FOR THE ENVIRONMENT

PRINT 50 AN ALLY FOR THE ENVIRONMENT

Since the introduction of the emulsion 50 in Uruguay PRINT form base priming it has changed considerably because of the technical and economic advantages

We have made little emphasis on the environmental benefits of its use to the detriment of asphalt diluted for priming as in the case of the MC1. Diluted contains 30% volatile solvents evaporating end to the atmosphere photochemical smog impact on the greenhouse effect and the reduction of the ozone layer while PRINT 50 only emits water in curing.
Also, temperatures of handling and application of different types of primers lead to significant fuel economy as the PRINT 50 It is fully liquid at room temperature and water it is possible at temperatures as low as 40 to 50 ° C while the MC1 must be heated to 90 ° C or 80 to be applied correctly.
In recent years the use of PRINT 50 in Uruguay achieved:
- Reduce by 3000 tons of solvents emitted into the atmosphere
- Reducing CO2 emitted to the atmosphere because of its lower temperature manufacturing, handling and application
- Improving safety and health of workers by lower operating temperatures and avoid inhaling solvents
- Eliminate the risk of explosion in regadores trucks.
As for flammability and explosion hazard we should worry seriously and only in 2019 there were 2 accidents which fortunately had no fatal casualties but substantial material losses.
March 14 2019: Explosion of a tank RC2 in Maldonado http://www.maldonado.gub.uy/?n=38251&mm=Obras
In many countries of the world the use of diluted asphalt is prohibited, as is the case of Argentina and Spain, or at the least there are state policies that tend to reduce these products. In the US and Canada have guidelines for not using dilute solvent regulate their content or used out only from the time of ozone generation (usually summer).
It has recently been proposed that can not manufacture or market any diluted containing more than 0.5% by volume of volatile solvents evaporated at 260 ° C or less as determined by ASTM D402.
Uruguay should consider this path if we want to be an environmentally responsible country and protect the lives of workers.
For further information on the technical advantages we approached them a paper presented at the 9th Congress of the Road Uruguaya: https://bitafal.com.uy/wp-content/uploads/2017/10/9%c2%ba-CVU-Trabajo-Imprimaci%c3%b3n-con-emulsiones-mejoras-t%c3%a9cnicas-y-ambientales.pdf
Crossed by Route 7

Crossed by Route 7

The general state of the route is good and has done good work that will have long life.

In recent years, a great effort has been made on Route 7 to improve its structural capacity and bring it to a primary route standard. To this end, a widening of the road has been carried out in almost its entire extension to reach a total width of 11 m and double bituminous treatments have been carried out on the 7.2 m road and simple treatments on the shoulders. Cement has been recycled over more than 100 km and granulometric stabilized sections have been carried out to increase the bearing capacity of the pavement.
Structural results speak for themselves, there are no potholes or sinkholes despite the tremendous growth that had heavy route, but we still have way to go to achieve double bituminous treatment resistant and durable from day one.
Exudation treatments presented in several sections of the works recently opened but have been remedied by the construction companies time and no risk for rising or severe bleeding now. It is clear that the sections carried out during the winter are most affected but there are still sections executed in good time they had exudation.
On the other hand those made from October 2019 to date show a very good performance and have not submitted exudates and has been achieved adequate dosing and has been made in good time.
Irrigations A are always in very good condition and this is because the appropriate proportions of aggregate and asphalt are used (because if there are landslides, the base is visible and it is necessary to redo the section), which allows having the necessary voids in the system to prevent exudation. On the other hand, when there are landslides in aggregate B, not much attention is paid to it, since aggregate A “hides” the problem, but that is where the necessary voids are lost, since the asphalt of both irrigations is there, but only to adhere the aggregate. A. This is verifiable in the field since the most compromised sections have a cushion of aggregate B in the ditch and the sections in better condition do not.
In this regard we insist on the following points to prevent premature exudates:
1) Respect the ban
2) Incorporating ball penetration test for the ramming potential at the base arid
3) Make dosing based on rational method Austroads where in addition to the characteristics of the aggregates are incorporated concepts based and traffic
4) In the selection of aggregates, narrow strips search granulometric aridos for irrigation A and B that do not overlap in their belts or are contiguous
5) Executing processing B should be next to or immediately after the A cure system for simultaneously minimizing loss arid B as proposed in multiple treatments locked
6) Use highly modified emulsions (P40 or P60) for those sections which have a high traffic and are in thermal Mediterranean area
7) Making only the risks A
We need to rethink the usefulness of double treatments as new work. Today Today we are making almost all stabilized bases, so a simple treatment that provides impermeability and an adequate macrotexture is more than enough. Irrigation A already cured and in service have a very good mechanical resistance and are capable of withstanding high traffic without problems, there are plenty of examples in Uruguay and in the world. In New Zealand and Australia, only simple irrigation is done in new construction and they are maintained frequently to maintain the necessary safety and functionality characteristics.
January 2020 - Bitafal Group
MERRY CHRISTMAS AND SUCCESSES FOR 2020

MERRY CHRISTMAS AND SUCCESSES FOR 2020

From Group BITAFAL we wish them every success for the coming year

We arrived at the end of the year 2019, undoubtedly marked by the electoral cycle, which has involved almost the entire road network. We have worked hard and we have put our efforts on improving the quality of everything BITAFAL Group offers. Invest in technology, a new plant and train our employees, seeking to follow the path of innovation, commitment, responsibility, teamwork and transparency.
As every year, we highlight the work we are doing all players in the sector, as our roads is a reference worldwide for the level of innovation we apply to the construction and maintenance of our roads. We thank all our raving fans who believed, believe and believe that Bitafal Group is a company that promotes the development of the sector.
Thank you for the confidence offered in these years and we hope to accompany them in their future projects.
We share with you some highlights of the 2018-2019 work cycle that position us to a 2020 full of new objectives:
We see a promising 2020 both in our work in Uruguay and the region. We develop new technologies and products to keep us apart. We follow the path of the generation and dissemination of knowledge, so much so that we will be doomed to the organization of the XXI IBWC in Uruguay to be held in 2021.
We will remain close to our customers and friends always seeking the best for our country and strengthen the ties that are most important for long-term sustainable development.
Congratulations and much success for 2020.
NEW TECHNIQUE FOR CEMENT CRACKING CONTROL

NEW TECHNIQUE FOR CEMENT CRACKING CONTROL

Serviam has developed an interesting team to prefisurado recycled with cement.

Drawbacks consabidos generating shrinkage cracks of cemented materials are subject to attack because they can reduce the life of the pavement by water ingress. Usually in our country it has incorporated the technique with a heavy microcracking to mitigate these effects but there are other alternatives globally with specific equipment Compactor.

Serviam company developed a computer adapted to perform a Bobcat injecting the emulsion prefisurado IRRIGATION BITAFAL 65 at a depth of 20 cm each 4 m crosswise.

After initial compaction of the recycled material prefisurado this is done then continue working, leveling and final compaction. Of note is the use of technology to achieve grade project controlled by RF motoniveladora.

Subsequently curing the same emulsion BITAFAL IRRIGATION 65 is performed with quarry dust is released and traffic. By far the results are very good and it shows on the go using technology to control IRI. In the next few weeks they will be starting tasks paving asphalt hot mix in 5 cm surface layer.

We will see the behavior of this technique prefisurado in the future. For now, in every induced cracking and the asphalt it is necessary to prevent water ingress so hopefully a lifetime of work done.

The equipment developed by Serviam has a storage tank emulsion, a positive displacement pump, a wedge (shark fin type) of 25 cm which leaves a pipe 20 cm and a solenoid valve for controlling the dosage from Bobcat.

The fin makes a wedge about 2 cm wide in advancing the equipment is filled with emulsion BITAFAL IRRIGATION 65. Then the material of the side itself closes the wedge and leveling and compaction are performed normally. It can be seen watering cured, made with 1L / m2 of IRRIGATION 65 and 6 L / m2 of dust, marks prefisurado every 4 m in the photos below.

100 BULLETIN ISSUES MAKING ROADS.

100 BULLETIN ISSUES MAKING ROADS.

A decade ago month decided to share with you The highlights of the national road system and the world, also about our company, participation in congresses and conferences as well as showcasing new technologies that have been incorporated into the country among other issues that have been playing over these 100 editions.

"MAKING ROADS" It has been changing every year, including new sections, updated formats and platforms on which it is built, but always maintaining the essence of transmitting the news that we believe contribute to national roads. These newsletters are in full on our website, accessible to everyone and They are the record of the evolution of our company and the road.

It is for us a enormous pride to have met this milestone as it marks some of the values ​​we hold as innovation, persistence, responsibility, teamwork and transparency that every month brings us to deliver a new edition.

By another 100 editions!

We leave a selection of the most prominent bulletins of these 10 years.

OUTSTANDING ISSUES 2008-2018

Issue # 1 - August 2008 - Note on the first double esparcidora SECMAIR Chipsealer 41.

Issue # 6 - February 2009 - First experimental stage with tire dust in Uruguay.

Issue # 20 - May 2010 - First export of asphalt to Paraguay.

Issue # 29 - March 2011 - Launch Technologies Research Center Vials (CITEVI).

Issue # 49 - December 2012- New terminal asphalts - Roadtec Shuttle Buggy SB 2500 travels to Argentina

Issue # 54 - June 2013 - Visit to BITAFAL Wirtgen - First Leg F10 in Interbalnearia - Presentation anchored joints for bridges neoprene.

Issue # 58 - October 2013 - Bitafal incorporates the first team WIRTGEN WR 2000 stabilization and recycling to Uruguay

Issue # 62 - November 2014 - Bitafal Wins NOVA Award for modified asphalts

Issue # 71 - March 2016 - First stages foamed bitumen - New multifunction hoppers - Laboratory foamed asphalt

Issue # 76 - August 2016 - First tranche of warm asphalt mixes modified in Uruguay

Issue # 87 - August 2017 - Different bearing arrangements on stabilized bases

Issue # 99 - November 2018 - Launch of "high-performance surface treatments"

:: LAST SPOTS :: Launch of the book "High Performance Surface Treatments"

:: LAST SPOTS :: Launch of the book "High Performance Surface Treatments"

Next Monday November 5th at 9:00's book will be presented Bitafal group at Regency Park de Zonamérica. ATTENTION! Last places available, to sign enter the following link:

Chipsealer

It is aimed at engineers, assistants, builders, designers, staff and Intendencias MTOP, university students and anyone linked to roads or other areas, who wish to increase their knowledge about this technology for their projects.

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