Asfalto Archives - Page 7 of 8

UNIFORMITY AND QUALITY

Asphalts new terminal opened last October (Bulletin # 98) It allows great homogeneity of asphalts basis for the manufacture of emulsions and modified asphalts.

With these investments and operational changes in plant we are achieving consistent quality of our products. The new terminal allows we to emulsify asphalt batch of some 320 tons each that are constants in quality and consistency batch after batch of emulsion.

With asphalts available in Uruguay (AC30 and 150/200) we achieved a "Blend" that meets the requirements for emulsions classified by performance for our country exceeding 61 ° C in Grade Performance testing AASHTO M320 to prevent exudates in time summer.

Since November 2018 penetrations waste our emulsions for surface treatments are between 60 and 70 dmm and softening points above 50 ° C constant and predictable. We have also improved the quality of viscosities and emulsion to standardize the process of emulsification and the size of the stocks of finished product.

Today as never before BITAFAL has full confidence in the superior quality of its emulsions over other emulsions present in the local and regional market.

After liberation of the base to emulsify BLEND, ensuring PG having a suitable batch emulsion between 30 and 90 tons are performed according to the type of emulsion. We have duplicates for each type of emulsion allowing us to quietly release the batch laboratory prior to loading tanks.

The new tanks have agitators and load filters to remove any impurity or cream that may arise.

We have also implemented a system control content and temperature of all tanks of the plant that allows us to accurately adjust stocks and forecast production and delivery.

Laboratory incorporated a dynamic shear rheometer (DSR) and a large battery of additional tests to determine the quality of emulsions, not only as specified in the tender documents and the IRAM 6698 but for new global trends.

We have a stereo microscope to see the quality of emulsification and micelle performance level.

We are moving the way for emulsions level of performance (EPG) which will be the specifications of the future.

These great efforts are BITAFAL we have a commitment to national roads and we want things done right because that is our responsibility.

VEDA IN Surface treatments

With the imminent entry of autumn, we should take the necessary precautions in the execution of surface treatments.

The ban begins in a few days and the most suitable for our summer climate emulsions begin to generate low yields in the execution by the cold and the few hours of insolation that we are already living.

Asphalts specifications based emulsions remain unchanged throughout the year. If the manufacturer wants a change in specifications to continue the work, we do get an email with the desired specification.

We recall that in remitos load the batch number corresponding detailed, and which can enter our website to have the Quality report and to corroborate with the requested specifications.

To maintain the quality of the works must run less meters per day before releasing traffic with some specific recommendations always looking to reduce the amount of water in the system.

We invite you to know in detail the recommendations on the following link "SEVEN RECOMMENDATIONS FOR USE OF EMULSIONS IN WINTER"

surface treatments:

1) heating the emulsion to be used above 70 ° C to promote evaporation of water from the emulsion itself.

2) Do not wet aggregates and try to use the top in the collection that are drier and drained, not load the gathering at the bottom.

3) Start the task early in the morning, regardless of the prevailing temperature, for that tranche has executed the most hours of exposure to air, wind and sun.

4) Apply TMT technologiesThat favor locking of aggregates applied, achieving superior quality and finish.

5) Have properly calibrated equipment graveled and irrigation to the quality objective is sought to be achieved.

Irrigations primer:

In these autumn and winter periods irrigation primer they are affected by the high rate of humidity in the foundations.

It must be respected as well as primers with dilute MC 1, optimum moisture application for the purpose of achieving a successful work.

By the above, it is normal for a primer in summer takes less than 1 hour in winter takes more than 24 hours to get to be acceptable.

Soil stabilization:

It is best suited to perform soil stabilization with cement or lime period.

Water needs hydration are very basic and profiling work, compaction and sealing are unmatched.

Here the sealing emulsion IRRIGATION BITAFAL 65 at 1 per square meter lt should be complemented with a sealed with quarry dust good quality.

These bases have such successful results supporting several months before recommencing graveled tasks in appropriate months.

It IS NOT WHAT THEY SAY ...

During February we conducted two tours of much of the country to see how surface treatments behaved during the summer.

After having traveled more than 2800 km were able to verify that the problems of exudation that both resonated in the press and in the environment, are actually a small part of what has been done in recent months across the country.

We could risk to quantify the problem areas and we do not exceed 2 or 3% of total executed.

Exudation is fully controlled and are the result of a sum of different errors, based not only attributable to asphalt emulsions. We have traveled sections executed with national emulsions, RC2 or imported emulsions, and in all cases there exudates sections. A common denominator of most of them is running during the winter without the necessary precautions.

The emulsions BITAFAL ALWAYS comply with the current specification DNV which includes a penetration range of 50 to 200 dmm and we subdivide into soft, medium and hard to adjust to the realities of each work.

Every summer we adjusted basis or hard asphalts media but from now on is the quality of asphalt base will maintain throughout the year. Only order will manufacture soft asphalt emulsions that way unless there is a variable in the appearance of exudates.

You can read some recommendations to reduce the appearance of exudates below:

To prevent exudates is essential to work in good weather conditions to ensure proper curing of the emulsion without risk of premature detachment and redo work force overdosing asphalt.

If you have to work during the closure take the precautions mentioned in note below.

Other factors are very soft exudation base surface allowing penetration of the aggregate A treatment and reducing the proportion of several necessary. The same applies to well-graded aggregates that fill the gaps for the asphalt emulsion.

The lack of a suitable dosage criteria, use the same "recipes" for all treatments running and lack of calibration of equipment are key components for the job fails.

Aggregates with high dust content are also a problem because the reduced active adhesion usually increase the dosage asphalt irrespective of subsequent consequences.

Must professionalize dosage calibration, the release of the basis for treatments and especially the aggregates used.

Treatment well executed, even with soft emulsions, may not have bleeding problems ... and many kilometers executed last winter with soft emulsions which did not have problems when they reached the heats.

Opening of new terminal of 1,000 tons.

After almost a year of installation, we are premiering new asphalt storage tanks hot on our Cologne plant Nicolich.

The terminal consists of three tanks of 350 tons each, and an American Heatec boiler Bearcat pumps 80 and 300 m³/ H with flowmeter. Besides being made a complete control system process variables, levels, temperatures and pressures. In the new terminal can be downloaded two trucks simultaneously at high speed which optimizes the times of availability of fleet and staff of our plant. It is also connected to the rest of the plant to transport asphalt pipe where necessary.

With this new terminal will be possible to have more homogeneous lots of asphalts basis used for the manufacture of our products have a stock in the event of supply problems and to optimize the time of the truck fleet Ergont.

With these investments we seek a better quality, consistency and availability of our products and transportation thereof.

World Of Asphalt 2018

Bitafal group was present once more in the world's most important asphalt event, this time at the George Brown Convention Center in Houston gigantic industrial city.

For 6 to 8 March was held the annual event World of Asphalt Houston, with a significant international presence of different industry players and roads. Also coincided with the event AGG1 Aggregates Academy & ExpoWith more than 200 aggregates and paving talks and an exhibition showing the world the latest technologies and innovations in equipment, products and services related to aggregates.

Houston fue sede este año del evento World of Asphalt, justamente una ciudad muy influenciada por el oro negro, que desde su descubrimiento en 1901, se ha convertido en su pilar económico más importante. Houston hoy posee 5.000 empresas relacionadas a la energía y la ciudad es considerada por muchos como la ‘Capital de Energía del Mundo’. Cualquiera que haya transitado por esa ciudad o ve las imágenes de internet, se da cuenta de su magnitud.

A modo informativo, Houston cuenta además con el complejo médico más grande del mundo, el Texas Medical Center (TMC), con sus 54 instituciones afiliadas y sus 15 hospitales; y con el mayor centro de investigación espacial en el mundo, el Space Center Houston de la NASA. Incluso “Houston” se jacta de ser la primer palabra dicha desde la luna en 1969.

All that grandeur and glitz that the city (and all USA), could not be less in the event, which featured major local and international exhibitors who did not hesitate to bring its huge crushers, pavers, boilers and heavy machinery. Furthermore, the presence of the most important players in the world of asphalt and all products and services related added.

Here are some of the photos of the event.

More photos The National Stone, Sand and Gravel Association

Emulsions for high demands (65 IRRIGATION BITAFLEX P40)

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.

For inquiries please write to bitafal@bitafal.com.uy or visit our website www.bitafal.com.uy

Ways of the world: Impressions of New Zealand trip

We had the pleasant opportunity to visit for 20 days, covering 2735 km of roads NEW ZEALAND and returned extremely surprised by the quality of roads in the country.

New Zealand has been successful in how to combine technologies way to get a paved road network of high quality. Let's start with comparative data with our country:

-New Zealand has 270,000 square km, 50% more than Uruguay.

-have 95,000 km of highways and roads (0.35 km / km2) of which 63,000 km are paved, 66% of the total.

-Uruguay 78,000 km road (0.44 km / km2) of which have 8000 pavings, only 10% of the total.

In other words, we have a higher density of roads per km2, but far we have long paved network as theirs.

It is that in New Zealand stabilization in situ with cement, lime or asphalt, is present decades, using as surface treatments surface layer and leaving only places high demands on the use of asphalt.

As we all know, the quality of the bases is essential, but if surface treatments are used as rolling. Conversing with them consulted engineers work, how they do it, and his answer was blunt: "It puts on a carpet and hard floor will last a lifetime, if you put on the clay have to throw very soon".

Transportation Agency's own New Zealand indicated on your website: "The surface treatment is the most common type of rolling road in New Zealand. Economic, flexible and resilient, it provides an adaptable, safe and cost efficient surface for road users. We have a regular all surfaces to ensure they will perform at maximum follow.High traffic roads resealed usually need about every seven years, while roads that carry less traffic can last 15 to 20 years before resurfacing is required. " (Source:NZ Transport Agency)

We share then as discussed with technicians work procedures used for construction of a typical road in New Zealand.

CONSTRUCTIVE PROCEDURE

The kickoff is performing test base materials, the effects deeply know what material is counted. The development laboratory formulates a stabilization project based on cement, lime or asphalt and if you have enough good granular material in the area is considered the particle size stabilization with a maximum size of 65mm and the addition of 2% of cement.

The bases are treated perfectly with suitable materials, with the necessary granulometry compacted and cleaned before waterproofing.

By having a very good base are limited to be as tread layer surface treatment with dry monogranular 6-12 mm and with the passage of time, when the treatment loses or shows a signal texture permeability, apply a second treatment with fraction 2-6 mm improving rolling and waterproofing structure again.

Then repeat the cycle with a large fine gravel 6/12 on and so on, always taking a road in perfect condition applying preventive maintenance at the optimum time.

Asphaltic used folders in the inner city, joints roads, highways exit of cities and in very short stretches of mountain roads when the slopes and angles are too demanding for a surface treatment.

The guide Transportation Agency New Zealand on the selection of the suitable tread layer is in the following link: Selection Guide surface layer

The use of surface treatments monogranular or Chiping, reaches places such as a neighborhood of the city of Auckland, and most important port in the country and the North Island as seen in the photos below city.

Our trip was not only on this visit in the month of May Bitafal group You will be participating in a two-day course on technologies Chiping in the city of Christchurch in the South Island. In addition we already have a publication of more than 500 pages of the Manual on Chipsealing in New Zealand. Interesting document available on: Chipsealing in New Zealand

To keep growing and researching, we have a long way to go.

We leave more photos in the following link

Advanced technologies: Chiping on Route 8

The company has relied on Serviam Bitafal Rentals to assist in the maintenance of Route 8 between Pirarajá and Aramendía through technology Chiping.

It involves the application of a simple surface treatment fog irrigation, using a highly modified with hard asphalts emulsion (Emulsion BITAFLEX IRRIGATION65 P40 D) And aggregates of excellent quality and grain size adjusted.

La condición inicial del pavimento consistía de una carpeta asfáltica fisurada pero casi sin ahuellamiento. La empresa realizó los bacheos necesarios y el sellado de fisuras y Bitafal Rentals colaboró con las modernas doble esparcidoras para lograr una buena terminación con elevados rendimientos de ejecución.

The result was a high surface macrotexture improving tire grip with the pavement and less effect "spray", combined with a total water proofing, ensuring a longer life to the pavement. Furthermore the application of a surface irrigation fog, beyond ensuring adherence of aggregates, manages to homogenize the surface to give a uniform aesthetic finish.

Combining a good job of preparing the surface, using materials of superior quality and performance with the latest equipment, we are sure it will work long service life.

Just relieve the sections of Chiping executed Ruta 5 por Necklace (San Gregorio north) in 2010, as we reported in previous editions of "Making Roads" to convince durability and excellent surface characteristics of technology.

ROADS :: :: MAKING
Bulletin No. 26 (23.11.2010)
Bulletin No. 54 (06.21.2013)

See all photos ON HERE

Cold Recycling Wirtgen Group Seminar | December 2015 - Sao Paulo, Brazil.

It was held in Sao Paulo, Brazil, last December, a technical seminar organized by cold recycling Wirtgen Group.Uruguayans participated more than 15 technicians of various construction companies, MTOP, of Tradinter and Bitafal group. There were also delegations from various countries in South America, reaching about 200 participants.

Los temas tratados en el seminario fueron sobre la tecnología de reciclado en frío y de la estabilización con asfalto espumado específicamente. Se realizaron charlas técnicas sobre las propiedades y comportamiento de materiales estabilizados con asfalto espumado (BSM – Bitumen Stabilized Material) y un taller sobre asfalto espumado y materiales BSM en el impresionante laboratorio central de la concesionaria CCR Nova Dutra.

Asphalt arena (1)

Esta tecnología es ideal para tramos exigidos como el existente entre San Pablo y Guarulhos que cuenta con más de 200.000 vehículos por día (la mayoría de ellos camiones y ómnibus) tanto por la resistencia del BSM como por la velocidad de ejecución, que se realiza en unas cinco horas únicamente durante la noche. Por otra partes es una tecnología económica y sustentable ya que utiliza el material de base y asfalto existente, 1% del cemento y un 2% de asfalto espumado solamente.

A very interesting experience thus acquired knowledge, as both made the links between the Uruguayan delegation, as with other delegations present. It is very important that all couples involved in the development of technology in the country have participated, showing interest and commitment to these first test sections in Uruguay are successful.

Wirtgen Group shared presentation

First stages of cold recycling with foam asphalt | Bringing Theory to Practice

The first sections of pavement recycling foamed bitumen are a reality and are projected as an economic and sustainable solution for the rehabilitation of roads.

Since incorporation by BITAFAL RENTALS of the first recycling train in situ in Uruguay in 2013, it has advanced very quickly in the national road system to incorporate technology in all its variants.

Recently they have begun to implement the first sections in situ foamed bitumen. The company Hernandez & Gonzalez has carried out the first tests on Route 12 and is starting this March with work on Route 3 after several months of design laboratory and learning with South African technicians who have come to assist with the implementation of the technology.

Moreover the company CVC has recently completed a stretch of Route 36 in the department of Canelones, with great success. He BITAFAL group He has supported projects in both asphalt and logistics sion with facilities and equipment for the proposed Route 36

We thank our customers for the continued trust placed in the company to realize the implementation of new technologies in Uruguay.