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Tag: roads

New solutions in road construction and/or repairs

Tuesday, 15 March 2022 by Tema Corporation
TeMa Geo Solutions - Roads

The safety of road infrastructures is the main goal, and maintenance work – whether preventive or supplementary – is systematic.

Road surfaces withstand heavy traffic loads and atmospheric changes with significant variations in temperature. Constant maintenance is therefore required in order to ensure even surfaces and the stability of structural elements.

Let’s look at the main factors involved in building new roads or maintaining roads.

 

Controlling surface erosion

Erosion is largely due to freeze/thaw cycles, which make asphalt less elastic and therefore more prone to internal voids. Such voids allow water to penetrate into underlying layers, gradually eroding the structure.

In addition, heavy traffic loads, especially heavy vehicles, cause deformation of the surface layers: this results in water penetration, which “softens” the structure and makes it less resistant.

 

Anti-capillary drainage

The water capillarity, i.e. the ability of liquids to move in micro-spaces even against the force of gravity, is a rather complex concept closely monitored in the construction industry. With the help of pressures exerted on lower layers, water rises upwards, dragging the finer components of materials with it and causing deformation.

It is therefore necessary to provide a drainage geocomposite, a three-dimensional membrane obtained by bonding two or more synthetic components in order to convey fluids to the exterior and prevent them from rising.

You can discover all our solutions here.

 

Reinforcement

It may sometimes be necessary to install reinforcement grids, especially if there is a more or less pronounced slope that would cause a road shoulder to slide downwards.

The choice of the most suitable type of reinforcement, and therefore also of the position of the geogrid in the layering, clearly depends on the problems to be faced i.e. reinforcing the surface area to limit the spread of cracks to underlying layers, improving the load-bearing capacity and reducing the stresses transmitted to lower layers, or providing a separation (and anti-contamination) function.

Discover all our solutions here.

 

Stabilisation

During intervention works, softer soils may be encountered, which may be subject to instability or even collapse in the early stages of intervention works. Even if this should not jeopardise the feasibility of the works, there is still the risk that the minimum legal safety requirements will be compromised.

Also in this case, geosynthetic products are the solution to the problem, as they absorb tensions at least until the intervention work achieves structural stability.

Discover the solutions in the X-Grid line here.

 

Drainagedrainage geocomposites and membranesgeogridsgeosyntheticsroadsTeMa Geo Solutions
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  • Published in Drainage geocomposites and membranes, Erosion mats, GEO, Geogrids, Roads
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