The Polymeric Reinforced Soil (PRS) System provides a fast and economic method of building an Earth Retaining Structure in various applications such as industrial, highway, marine and river works.
The PRS system is used in simple highway retaining walls with and without surcharge loads, also to act as a counter weight for landslides, in bridge abutments, in marine walls, in tidal zones and in walls to resist the effect of blasts against explosives.
The major components of the system are light precast cladding panels, composite polymeric frictional ties and fill material.
The stability of the wall is achieved through the complex interaction of the soil particles and the composite frictional ties forming together a working structure.
The structure is built by repeating the same sequence of operations.
- Placing the facing panels
- Placing the fill material behind the panels until the first layer of the frictional ties
- Placing the frictional ties
- Covering of frictional ties with fill material
This procedure continues until the desired height of structure is reached.
There are five key reasons behind the success of Polimeric Reinforced Soil Systems:
- Economy – The low cost of the elements, the simple and efficient erection create significant cost reduction overall compared to the traditional reinforced concrete retaining walls
- Speed – The speed of construction is faster than the traditional reinforced concrete structures, particularly advantageous where other activities such as earthworks depend on the phasing of the retaining wall construction
- Simplicity – Panels, frictional ties and fill are the main components and the construction work is carried out with unskilled labour and light equipment.
- Appearance – The distinctive precast facing units are cast with aesthetic patterns and colours in harmony with the environment
- Foundations – The flexible nature of the PRS ensures that structure are constructed successfully on soils with low bearing capacity where the traditional rigid wall structures would require costly foundations and soil improvements