Hernández & González Archives

DOUBLE TREATMENT LOCKED IN CIRCUIT 1 PPP

30 April 2021
in: Asphalt,Bitaflex Riego 65 P40,Historical newsletter by ROADS,Bitafal group,González Hernández &,News,PPP1,Multiple Trabado treatment (TMT),Uruguay,roads

Traxpalco and Hernández and González perform at a very good pace with BITAFLEX RIEGO 65 P40 emulsion

The sections reconstructed by means of Surface Treatment include Route 54 and Route 57 and include a widening of the planimetric correction platform, surcharge and stabilized with Portland cement. Then, a double treatment is being carried out on the pavement at 7.2 m wide and a single treatment on shoulders at 1.8 m wide. The treatment is running with the technique Multiple Treatment Locked (TMT) with highly modified emulsion IRRIGATION BITAFLEX 65 P40 that allows high performance performance and early release to transit as well as saving materials without risk of exudation.

The works of Route 54 that the company Traxpalco is executing have made important progress in their execution since both the stabilization and the surface treatment are scheduled to be completed during the month of May. The works consist of a platform widening to 12 m wide together with planimetric adjustment of the entire section, then the granular material is stabilized with Portland cement to achieve a simple compressive strength of at least 20Kg / cm2. Then the TMT is carried out with highly modified emulsion IRRIGATION BITAFLEX 65 P40 with 6-12 mm aggregate and 12-19 mm with mist irrigation. The performance of the double treatment is above 15,000 m2 / day.

We thank Eng. Guido Saizar and Emilio Aitcin for sharing their concerns and collaborating with our company in continuous improvement.

The complete “Circuit 1” project consists of the reconstruction and maintenance of 260 km of existing route for a time horizon of 20 years, on Routes 12, 54, 55 and 57, as well as the construction of the Bypass in the city of Carmelo.

SUCCESSFUL APPLICATION RECYCLING ASPHALT WITH FOAM

We can proudly say that the Uruguayan road has become unrivaled in the last five years. The design engineers have proposed and accepted new technologies, builders have art equipment incorporating the first world countries and we are encouraging, but we shake the pulse, to innovate.

Who would have thought that in our country the technologies to be introduced as modified asphalts based massively?

Who would have thought that the surface treatments and micros with modified asphalts would apply on routes first order?

Who would have thought it stabilize soils with continuous and mobile equipment was to be imposed so quickly?

Only the technical results obtained are certifying all these advances.

The most recent milestone of new technologies pushed him over the past year the company Hernández and González S.A. making a bet unmatched in his work of Route 3. Sparing no technical or economic efforts, the company conducted a site recycling pavement with asphalt foam backed administration. In last December he was terminated the reference work and drove around in full, being able to observe the same high quality in all its aspects.

an expansion platform a recycling of all of the existing road asphalt foam and asphalt mixture of 5 cm thick, several sections with widening of a third rail verges stabilized in situ with cement and waterproofed with asphaltic treatment was performed modified emulsions.

All this work was done in less than 100 working days. As we all know, when Hernandez is proposed, it does, but beyond personal effort, its staff and technology built in Germany show that can be reconstructed 34 km of a road completely new with a guarantee of over 20 years only 100 working days.

This is the reality we want to emphasize, if we want a Uruguay with very good infrastructure, we must use the best technology, the most productive and advanced end up being the most economical and durable.

This result is part of an innovation process together among the companies that participated in the Wirtgen Technology Days 2014 held in Germany, which agreed to bring in conjunction with H & G, Meliter, CVC and Tradinter a South African technician for the purpose of a conference the virtues of applying technologies foamed bitumen (Bulletin October 2014).

This process continued with the addition of equipment and technologies required for their application and hard work in laboratory design all involved. They were also required many hours of training, briefings and of course hard to successfully implement this advanced technology work in the country.

As anecdotario plus all innovations in this work, conducted jointly develop gravillados hot applied in July, during the winter closed season with a very good technical and result only applied at low temperatures in our country (Bulletin July 2016)

All photos: ON HERE

GRAVILLADOS HOT IN WINTER

Last week with the company H & G successful tests gravillados hot in the shoulders of Route 3 were performed.

Because of the ban at this time governing a special binder it was developed to achieve full adherence of the aggregate used avoiding disadvantages of premature landslides and excess binder that can lead to exudates with the first warm days.

The developed binder BITAFLEX TERMOSEAL has various modifying additives to achieve immediate adhesion of stone (even when it contains dust) while maintaining a high viscosity to prevent exudates in warm periods.

This technology is used in Australia and New Zealand in winter periods with lower temperatures at local performing well and avoiding closures work both delay the execution of the works.

For implementing the binder is preheated and irrigated with sprinkler truck about 110 ° C noting that the range of irrigation fully open. There are no contraindications if it is cooled before the gravel is applied. In the video of the execution pe can be observed that the asphalt after application reaches 14 ° C and gravel applied almost 20 minutes after adhered smoothly.

In case of dirty stone, it must be dried by passing it through the asphalt plant until it reaches a temperature higher than 105ºC. In this way, the separation of the possible dust adhering to the stone is guaranteed (which once released, will not interfere during the irrigation as can be seen in the video). The graveling was carried out taking all the precautions corresponding to a work with hot binder and with ambient temperatures below 14 ° C. Once the binder and the gravel had been applied, it was compacted with a pneumatic compactor, making about 5 passes at 8 km / h.

The results were more than satisfactory in the first section executed, releasing the traffic immediately after compacting. To demonstrate the high adhesion between the BITAFLEX TERMOSEAL and gravel, it was circulated by the roadside traffic route without receiving any detachment. This technology can be applied even with cold gravels prewrapped with special asphalts or suitable emulsions prepared in times of good weather during the winter and apply automatic double spacing.

These tests were conducted in the presence of Ing. Jorge Galusso and MTOP assistants for the purpose of studying in situ the performance of technology.

VIDEO: https://youtu.be/WboY2CqnIKw

Category Archives: Hernández & González Archives - Bitafal

Traxpalco and Hernández and González perform at a very good pace with BITAFLEX RIEGO 65 P40 emulsion

Category Archives:
Hernández & González Archives - Bitafal