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