Geotextile roads: projects and prospects

Geotextile roads: projects and prospects

May AMANMURADOVA

 

Students of the Oguzkhan University of Engineering and Technology are exploring the possibility of using high-strength polypropylene material in the construction of motorways from domestic geotextiles to create reinforcing layers and to increase the level of strength of the roadway.

After opening in October 2018, of a plant for the production of polyethylene and polypropylene in Kiyanly, Turkmenistan strengthened its position as an exporter of hydrocarbon products, and not only raw materials for its production. The design capacity of the gas chemical complex in Kiyanly is 81 thousand tons of polypropylene per year. Together with 84 thousand tons, produced by the Turkmenbashi complex of oil refineries, this will amount to 165 thousand tons of polypropylene, 75% of which is intended for export.

The sale of polypropylene in the domestic market of Turkmenistan mainly relates to the production of packaging films, bags, containers and pipes. At the same time, the possibilities of its use are much wider: from household items to details of technical equipment, nonwoven, electrical insulating and reinforcing materials.

Geotextile belongs to the latter. It is widely used in various fields of construction. For road construction, it will be useful in that it is used to reinforce soils and prevent mixing of various layers of soil. It is also used as a drainage, due to its strength characteristics, it perfectly protects various structures and materials from the damaging effects of the external environment, increases the allowable load and reduces erosion from weathering, landslides, washing out soil particles with rain and so on.

Its main disadvantage is the requirement of special conditions of storage and transportation – even small damage on the surface of the material can significantly impair its performance characteristics.

Technological students developed their own project for the production of geosynthetic canvas, recommending the following road construction: a layer of sand, reinforcement, a layer of rubble, geotextiles and asphalt. They are of the opinion that such a construction will protect the pavement from spreading and will allow repairing not once every 2 years, as it is done now, but once every 12 years.

In light of the active participation of Turkmenistan in regional and global logistics projects, close attention is paid to highways, the effectiveness of which directly depends on the quality and durability of materials. According to ETU students, roads reinforced by geotextiles will withstand trucks weighing up to 70 tons, which will significantly affect the volume of goods transported.