TR Stabilisation

Specialist Soil Stabilisation Contractor operating throughout the UK

Soil Stabilisation Services throughout the UK

Lime Stabilisation

What is lime stabilisation

Lime stabilisation is the cost effective way of producing a ‘capping’ layer of in-situ materials, it was originally pioneered by the romans over 2000 years ago.

The process involves the spreading of calcium oxide (CaO) which is then mixed with H2O (water) to form calcium hydroxide (Ca(OH)2) and mixed into the sub-grade soil. The calcium hydroxide reacts with aluminate and silicate minerals in most clay based soils.

The resulting calcium silicate and calcium aluminate hydrates are basically a cement which provide increased soil strength quickly.

It can even be used as part of a 2 stage process on sub-base and road base layers. Laboratory equipment and specialist expertise and CBR tests are required when utilising lime cement to correctly identify the subgrade for cohesion as sulphates must not be present in the materials.

 

What are the benefits of lime stabilisation?

Lime stabilisation has the benefits of :

  • Cost – through reduced materials and stronger soil base.
  • Soil strength gains of up to 20 times.
  • Reduction in time for base to become strong.
  • Reduced depth of sub-base and aggregates – reduced materials cost

Who uses lime stabilisation

Companies throughout the world use lime stabilisation, it is used in the UK for creating the sub-base for road laying, in such mamoth road tasks as the M25, M4, M6, M1 etc. Its used in airports for runways, large industrial and retail complexes for car parks and at ferry ports.

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