A soil Stabiliser is a construction vehicle with a powered metal drum that has rows of mixing blades or paddles. It blends soil, a binder agent (usually portland cement or lime) and water together with paddles in the mixing chamber and usually does not cut or mill hard or very thick ashpalt or cocrete. Modern soil stabilisers are more powerful and often use carbide tips instead of paddles. In this way most soil stabilisers have become much more like road recyclers where they can also blend the old road surface in the mixture.
A soil stabiliser mixes a low strength concrete and performs a similar function to a concrete mixer except that it happens on the ground. Some modern stabilisers use tungsten carbide tips similar to a road pavement mill but a soil stabiliser would have less of these.