I+D+i Archives - Bitafal

SAVE THE DATE – interCILA2021

From 23 to November 25 We invite you to the virtual event interCILA "In transit to the XXI CILA of Punta de Este"

Iberoamerican Asphalt Congress Archives - Grupo Bitafal

Referents from all over Ibero-Latin America will participate and the entire asphalt community is invited to present the innovative projects that are being developed in the CILA countries, as there will be a session on R&D projects where two speakers will comment on the progress. To be considered in this session, they must send the title of the project, country of belonging, a brief summary of no more than 100 words and the degree of progress of the same to itafec@itafec.es

Referents from all over Ibero-Latin America will participate and the entire asphalt community is invited to present the innovative projects that are being developed in the CILA countries, as there will be a session on R&D projects where two speakers will comment on the progress. To be considered in this session, they must send the title of the project, country of belonging, a brief summary of no more than 100 words and the degree of progress of the same to https://www.itafec.com/eventos/intercila2021
Referents from all over Ibero-Latin America will participate and the entire asphalt community is invited to present the innovative projects that are being developed in the CILA countries, as there will be a session on R&D projects where two speakers will comment on the progress. To be considered in this session, they must send the title of the project, country of belonging, a brief summary of no more than 100 words and the degree of progress of the same to https://www.itafec.com/event/programpdf/351

FIRST TRANCHE OF ASPHALT IN URUGUAY HiMA

the first experimental section using highly modified asphalt (HiMA) was performed in Uruguay

The new highly modified asphalt (HiMA) developed by sion, He was executed by Necklace last August in the widening of Route 101. The section in question consists of 600 meters above prior to entering the roundabout junction Nicolich (direction Montevideo) outside lane. The aim of HIMA provide durability to asphalt, primarily because of its outstanding resistance to cracking and permanent deformation.

Continue read: DAY OF THE CHILD IN BARRIO COLONIA Nicolich

The original project consists of a black base with conventional AC-30 asphalt 12 cm on which a road surface with 5 cm AM3 is then applied. Colier was proposed, with the approval of the MTOP, 600 m replace the AC-30 HIMA of which 300 m in thickness was reduced to 10 cm (17% reduction).

Asphalt (17)

And extracted with witness samples of the asphalt plant will proceed to perform tests of dynamic modulus, and fatigue loaded in four-point beam wheel. With structural package information and research, it will proceed to use mechanistic empirical design programs, such as BackViDe (IMAE) to predict their behavior.

We appreciate the confidence Colier MTOP and apply technology to allow himâ for the first time on our roads. The research results will be presented at the XII Congress of the Road Uruguaya on 25, 26 and 27 September and the XX IBWC Mexico 25-29 November.

Credits: Rafael L. Martins

NEW INDUSTRIAL PLANT

Bitafal group expands its installed capacity by acquiring the plant Urupema

The new plant, located in Barros Blancos at km 27 of Route 8, is the new commitment to develop the local market with new products and reach the regional market with high quality products and technical level.

They are more than 5 ha in area with 2000 m2 of roofed warehouses, plant chemicals advanced and more than 1000 m3 tank where we will develop a new generation of modified asphalts and other products for road maintenance.

He is currently performing a set point and the installation of equipment, an integral vehicle scale and adapted for handling asphalts waiting to be conducting the first tests in tanks next July.

Urupema was a processing plant plasticizers for PVC industry and other chemicals, being a plant that elaborated products both domestically and regionally. The whole plant is functional and adaptable to the preparation of other types of chemical compounds advanced for road maintenance.

CITEVI is working intensively on the development of a new range of innovative products that will be available commercially in the coming months and correspondingly present at events and fairs to participate.

We will keep you informed of developments in the next editions of "Making Roads".

Dynamic Load Plate workshop (LWD)

On September 4, an activity aimed at professionals and technicians linked to the use, implementation and interpretation of test results of dynamic loading plate was made Light Weight Deflectometer ZORN. The workshop was taught by the teacher MSc. Ing. Leonardo Abreu and engineers involved several construction companies in the industry and the ministry.

The LWD easily allows for in-situ elastic modules natural soil and compacted. Its principle is to apply a dynamic load on the soil surface and measure the deflection occurring during the impact. An accelerometer records the acceleration suffers plate and allows, from a double integration to estimate the vertical deformation. It is important to recognize this fact: obtaining dynamic modulus It is a mathematical operation and no direct measurement. The results obtained are: displacement vs. time diagrams, degree of compatibility, maximum displacement at each impact and dynamic modulus Evd.

The in-situ elastic modulus, evaluated by LWD parameters correlated with structural capacity (CBR, MR), degrees of compaction and Ev2 (second branch loading static load test Circular plate) modules.

One of the points discussed in the workshop is the fact that different equipment there have similar operating mechanisms, but differ in their mode of operation (deformation measured on a plate versus extent the soil surface) causing difference in responses. The different configurations for the same LWD produce different results soil deformation and elastic moduli, and the differences are very difficult to predict.

Asimismo, uno de los puntos de controversia planteados es la utilidad del ensayo para determinar la disminución del módulo de las bases estabilizadas con cemento luego de la microfisuración. En estos casos, la rigidez de estas capas es tan alta que la profundidad de influencia de los golpes dinámicos disminuye radicalmente. Se deberá estudiar a fondo si es necesario aumentar el peso o disminuir el área de la placa.

Por último, se procedió a comparar el equipo ZORN adquirido hace tres años por el CITEVI, con uno nuevo, mostrando similitudes en los resultados. Esto demuestra que el equipo es robusto y confiable, y que la falta de repetitibilidad que se le adjudica debe ser compensado con el aumento de los registros (para conseguir un 95 % de confiabilidad es necesario realizar un mínimo de 50 mediciones, con una separación máxima de 10 m entre ellas).

The immediate results positions the LWD as a powerful tool control work to assess the degree of compaction of bases and to describe structural capacity (determined in-situ elastic modulus and correlate with the CBR). It was demonstrated the high interest of the participants in the issues raised and agreed to establish a diverse group to further discuss the strengths and weaknesses of these teams work.

Evaluation of penetration of the aggregate in the bases for surface treatments

Using the penetrometer ball as quality control element base treatment.

In the path that is being traced at the national level to standardize design criteria for surface treatments, we believe the inclusion of the ball penetrometer test is of utmost importance. It determines if the base is in proper condition to receive initial treatment, or if it requires additional work. It is also an indicator of the degree of compaction that has been achieved and the moisture contained in the base. The test was originally developed by South Africans and is also used in Australia and New Zealand to quantitatively measure the penetration potential of aggregate into the base.

En este frío mes de Agosto, junto con Lucio Borelli de CVC, pusimos a prueba este equipo de medición en diversas superficies: bases granulares no ligadas, bases estabilizadas con ligantes (cemento Portland y asfalto espumado) y mezclas asfálticas. A continuación se ilustran algunas de las conclusiones, acompañadas de fotos de la experiencia.

In the initial treatments (surface treatments on bases), the subsidence of the aggregate on the surface always occurs, to a greater or lesser extent. The degree of penetration will depend on the base material, its humidity, compaction and the traffic to which it will be subjected. Not taking these parameters into account results in exudate in the short term, becoming particularly evident in the tracks. The explanation for this phenomenon is intuitive: the tire pressure sinks the stone into a base that allows it and the voids that correspond to the asphalt and the air (to achieve the macrotexture of the wearing course) are occupied by the material of base, causing the asphalt to surface through the stone, which results in exudation in the tracks.

El ensayo que se propone es muy sencillo y de fácil aplicación: consiste en la penetración de una bola de 19 mm de diámetro que es golpeada por un martillo normalizado lanzado de una altura conocida (Australian Standards: AG-PT/T251 – Ball Penetration Test). El valor de penetración queda registrado en el aparato, ya sea en un indicador electrónico o en una regla graduada (que viene incorporada).

Los resultados de este ensayo se utilizan para ajustar la cantidad de ligante a regar o para seleccionar un tratamiento correctivo previo al definitivo. Su uso más importante es quizá el de establecer el límite en el que no se pueden realizar gravillados sin antes recompactar o estabilizar la base, dado que su riesgo de falla es muy elevado.

La primera y más importante de las conclusiones es que la preparación de la base es un factor determinante en los resultados. Un problema común es que las bases presentan un exceso de finos en la parte superior que genera que la bola penetre con facilidad. Aunque parecen estar lisas y homogéneas inicialmente, tan pronto como se barren, una gran cantidad de este material fino se dispersa, dejando una superficie áspera e inconsistente que es problemática para ejecutar un tratamiento.

Another issue to consider is the humidity at the time of the test: if the surface is visibly wet, the penetration gives higher values. We could corroborate this by testing the same surface early in the morning and close to noon. In some cases, the conditions of the base at the time of the test are good, but when a primer is applied, due to capillarity and temperature differences, humidity begins to increase in the first 5 cm, affecting the penetration result.

Developing

BITAFAL present in the Circulars Opportunities Program

On Wednesday morning, August 8, 2018 the Teatro La Colmena opened its doors to welcome the fifth, and final, meeting dedicated to BUILDING OPPORTUNITIES PROGRAM CIRCULARES.

This is an initiative coordinated by ANDE and biovalue (together with MIEM, MVOTMA, MGAP, UNIDO, GEF and supported by Transforma Uruguay and ANII) to promote joint actions and thus promote the creation and implementation of sustainable productive projects, the framework of circular economy.

We had the pleasure to share a morning full of information and where BITAFAL presented the progress in the use of modified asphalt powder neumátuco out of use for road construction in Uruguay.

At the beginning the basics and regional and international examples of circular economy by the Coordinator of the Environmental Engineer biovalue María José González were presented. Then the Coordinator of associativity area and Integration of the National Development Agency (ANDE) Economist Paula Cobas presented the convocation of Circulars Opportunities Program.

In the second instance it opened a "Living" questions of the problems and opportunities in the construction sector in the transition to Circulate Economy, moderated by Giselle Della Mea (3 Vectors - Innodriven). With Architect Eduardo Siuciak (FARQ- UdelaR) and Ing. Jorge Pazos, Executive Director of the Construction Chamber of Uruguay.

Finally, a panel of businessmen and entrepreneurs with national and regional experience was convened to make a "double click" with examples of application of circular principles in their respective businesses and areas. The exhibition began with Robert Pacheco (Argentina), founding partner of EWAR, a company that since 2008 began to venture into the production of biosynthetic wood boards. The Qco Santiago Kröger (Uruguay) continued presenting the benefits, development, application and prospects of incorporating disused tire dust into asphalt cement. Next, Eng. Nelson Siqueira Nieto (Brazil) from the company RNV Residuos, presented on recycled aggregates, as a sustainable and cheaper solution than the use of non-recycled aggregates. To close the day, Arch. Eliseo Cabrera presented "La Casa Uruguaya", a winning project of the National Prize for Energy Efficiency - Cat. Buildings 2016.

From BITAFAL Group we appreciate the invitation as exhibitors to count the work we have done after collaborating with the environment and society. We welcome these instances of exchange opportunities to further develop new ways of doing things, with a more systemic vision that includes all parties are generated.

In the next LINK We share the presentations made on that day. ()

On the website CIRCULARES OPPORTUNITIESThey may elaborate on the call and the different activities and workshops that have been made under the program.

Podes relive the day ON HERE

BITAFAL enters the world of rheometry

New Reómetro Anton Paar SmartPave 102 at sion It will allow a big step in the performance of asphalt products in Uruguay.

As we announced in an earlier issue of our newsletterThis month installed a Court Dynamic Rheometer (DSR for its acronym in Ingés). This sophisticated equipment allows to know the performance of asphalts much of its viscoelastic range. Mainly we are concerned in these latitudes, that is at medium and high temperatures.

With this tool we can improve the modified asphalts and emulsions to suit the conditions of our country and know within minutes the quality of asphalts used as raw material.

With the addition of equipment, a course of rheology and use of equipment with an expert from the supplier was performed. The course was held on 27 and 28 August in the CITEVI and we have the participation of technical staff of our company, the MTOP and LATU.

This new machine is equipped with accessories for measurements from -20 to 150 ° C both conventional asphalts, as well as some modified properties of emulsions. Typically it used to determine the degree of asphalt (PG) but can be used for other properties of the binders.

Within the novel assays we can discuss the possibility of making master curves where temperatures and voltages applied to see the performance of the binders are varied. It is also possible to test highly accurate adhesion or cohesion at different temperatures, essential for the performance of emulsions for surface treatment tool.

Not so new but convenient is the possibility of viscosities "brookfield" within minutes both 60 ° C to the viscosity curves at the desired temperature range.

These are some of the many tests that can be performed but the team is extremely versatile and has many accessories that allow analyzing from food to paint smoothly.

In the course they made the basics of fluid mechanics, equipment operation and its application to the asphalts were given. It had a practical module to understand the operation of equipment and advanced software that controls and processes data.

Much remains to explore and contribute to our road with this team. We will keep you informed of progress.

Course Assessment Roadways

Bitafal said this in the course of UNR graduate of Argentina organized by the AUC in Uruguay.

In the last month, from 26 to 29 June, the Evaluation Course Walkways was performed by professors Marta and Oscar Giovanon Pagola, Institute of Applied Mechanics and Structures (lower) At the University of Rosario.

The course starts demonstrates the commitment that exists in the national road on these issues and attended by representatives from Grinor, CIEMSA, Serviam, CVC and MTOP officials, OPP and IM, in days of intense participation.

Among the topics discussed it is highlighted:

The objective of auscultation of pavements.
Analysis of the different parameters of pavement evaluation: longitudinal deformation (IRI), transversal deformation (rutting, sinking), cracking, bumps and surface defects (exudation polishing aggregates).
Review of the most commonly used for evaluation of these parameters equipment. Exposure of the most modern methods.
combined deterioration indexes: Index state Serviciability Present Index (PSI), Pavement Condition Index (PCI).
Importance of tire adhesion road (Macrotexture and coefficient of friction).
structural monitoring of roads (Benkelman, Lacroix, FWD, LWD).

In conclusion, the importance of assessing roadway stands, both structurally and superficially, to determine the prioritization of improvement projects and efficient maintenance of our roads.

New equipment for slip resistance CITEVI

Release Pendulum TRRL (British Pendulum Friction) to determine the coefficient of slip resistance in path 102.

Following the course Walkways assessment of the AUC, Measuring the skid resistance on asphalt Route 102 was made recently built by company C.V.C. with the British Pendulum CITEVI.

Slip resistance assesses the non-slip characteristics of a pavement surface and is directly related to the micro-texture of the aggregates used. The test consists of measuring the energy loss experienced by a pendulum fitted at its end with a rubber shoe, once it touches the surface to be tested. This loss of energy is registered by a mark on the graduated plate that contains the equipment.

Citevi Archives - Page 2 of 3 - Grupo Bitafal

With respect to the study section, said coefficient was determined in the new and in the old asphalt layer. In both cases, the test gave a value between 60-65, with a high repeatability in the measurement. Sections of the Carrasco Airport and the Interbalnearia were also tested, exhibiting similar values. Magdalena Pastorini and Nicolás Vaz from the MTOP were present to evaluate and discuss the results obtained.

Teachers consulted the University of Rosario, Marta Pagola and Oscar Giovanon, confirmed that the value found is good. They also clarified that the value tends to decrease with the level of traffic, and if it remains, it may be due to a not very good Los Angeles wear value, to the extent that the particles suffer small detachments (recovering their microtexture) when At the same time they tend to be polished. Finally, Marta comments that as an example, the Olavarría granite in the Province of Buenos Aires, has an initial value before polishing of the order of 65, and after polishing of 40. That final value of 40 is reached in 5 , 10 or 15 years depending on traffic and dirt conditions on the road.

As a final observation we conclude that the pendulum is very sensitive to the texture: if the mixture was kneaded, but still with exposed aggregates can give similar values. Therefore, to fully assess the slip resistance, it is advisable to supplement it with the patch of sand.

We must pay attention to these factors as they influence the behavior of the tire with the pavement, especially in wet conditions. Laboratory sion It has the equipment available to evaluate this parameter.

CITEVI gives a great step incorporates a Rheometer (DSR)

We are pleased to inform our readers that we are adding to our Research Center (CITEVI) Court Dynamic Rheometer (DSR for its acronym in English).

In a natural evolution of a company committed to the development of national road company, it's time to incorporate a computer that involves a before and after in the knowledge of the binders we handle.

This sophisticated equipment allows to know the performance of asphalts much of its viscoelastic range. Mainly we are concerned in these latitudes, that is at medium and high temperatures.

The team selected after several months of visits to research centers in the region and the US, is a Anton Paar SmartPave 102 with all accessories to perform the usual tests standardized by AASHTO and other agencies both America and Europe.

It is expected to be operational by August so we'll have more news on this in future editions of this Newsletter.

Category Archives: I+D+i Archives - Bitafal

From 23 to November 25 We invite you to the virtual event interCILA "In transit to the XXI CILA of Punta de Este"

the first experimental section using highly modified asphalt (HiMA) was performed in Uruguay

Credits: Rafael L. Martins

Category Archives:
I+D+i Archives - Bitafal