Maria Mena reports for Pagina Siete:
EnviRemed brought the construction in Bolivia, a novel method.
New technology reduces cost of road construction by 25 %
The technique allows to reduce by 50% the use of cement and gravel, and optimizes the execution time with the use of a liquid solution, enzymes and soil.
This novel technique that promises to revolutionize the traditional method for building roads, was imported by the US company EnviRemed.
The main material, that EnviRemed uses to build roads, is the soil mixed with enzymes (substance extracted from plants and animals) and a liquid solution that does not pollute the environment.
The soil is compacted until it becomes a stable surface. The route will increase its endurance by up to 180% and impermeability reduces soil, erosion and dust is removed by 80%, he said. In the conventional or traditional method a base of 30 inches or more (with additions) is used, then compacted and a layer of asphalt gets about five inches.
With the system of the international company, only a base of 20 inches is required and the earth that is removed is grainy, without stones. Subsequently, the soil is mixed with the chemical components and the compact, obtaining a layer of eight inches. Cement is used but in smaller amounts. “It is solid as a rock and impervious to the effects of water,” Price said through his translator and EnviRemed representative in Bolivia, Mario Fernandez.
For rural routes, the base is no longer necessary, but gravel is added to prevent slippage of the soil.
Explained that with this technique, the use of aggregates is reduced because the raw material is the soil or sand, which is obtained from the area where the road is built. This system optimizes runtime, since a kilometer can be completed in a day, while the traditional scheme kilometer advances in three days.
Another advantage is that the integrity of the sub-base of the road, which is considered the main problem in maintenance. This technique can be applied to the foundation of double track, departmental and rural roads, parking lots, bicycle paths and all sorts of tracks.
The Business Director for EnviRemed, Tripp Sloane, during the interview with Pagina Siete demonstrated the new product. He poured water on a sample of compacted soil and it could be observed that the liquid does not alter the form or dissolved and remained solid.
On January 14 and 15, EnviRemed held a seminar in order to offer their services. Involved public and private institutions, including: Bolivia Highway Administration (ABC), the Ministry of Planning and Development, Public Works, Mining, YPFB, the municipalities of La Paz and El Alto. “We’re doing an exploration of the opportunities that Bolivia can offer to our technology that is applied to all routes,” Price said.
The first day EnviRemed team explained the benefits of imported technology, the chemicals used and global reach; The second day was a demonstration of soil compaction on a path of 150 meters, given by the Mayor of La Paz, in a neighborhood to a nearby highway. The results were optimal.
Maintenance costs are reduced.
Useful. The useful lifetime of a constructed road with EnviRemed technology, is up to 20 years, similar to a conventional route. However, maintenance costs are reduced by up to 75% of the components of resistance and impermeability.
Technical. EnviRemed reduces the aggregate import requirement for the construction of a new road base, using existing soil materials to produce superior road base stabilization. This process will increase the integrity of the sub-base of the road, the number one problem behind all maintenance problems; it is friendly to the environment. Perfect for secondary roads, haul roads, subgrade beneath paved roads, nature trails, bike paths and tracks in formation.
This seems an excellent choice, demagogic speeches of environmental protection are not enough. Here it is!