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Recycling and stabilising services

StabiliserRoadTek is a Queensland market leader in road pavement recycling and stabilising services.
As natural paving materials become an increasingly scarce resource, recycling and/or stabilising of insitu or non-standard materials is an innovative solution to maximise the existing road network.

By blending existing road material with various stabilising agents, RoadTek can improve the road pavement in a more cost effective manner than importing new layers of pavement material.

Strategically located throughout Queensland, RoadTek is equipped to provide timely and cost effective recycling and stabilising solutions for our customers. Our reputation is built on our ability to consistently meet our customer’s needs and expectations.


Stabiliser being transportedRoadTek deliver a wide range of services including:

  • recycling 
  • stabilising 
  • additive spreading.

RoadTek has strong experience in stabilising projects including stabilising non-standard materials varying from sandy loams to black soil, up to depths of 300mm.

The recycling and stabilising process

Stabiliser at workRecycling road pavement is the process of mixing existing road material insitu with a road stabiliser machine whilst incorporating moisture if required, then re-compacting the material to improve the road profile and road performance.

Stabilising is a form of recycling, but also incorporates an additive to provide additional strength and lasting quality to the insitu materials. Stabilising increases the life of the pavement material which can reduce the road’s long-term maintenance costs and provide a safer road surface for motorists.

Existing materials can be modified with 1 – 6% additive, providing a cost effective alternative to importing other pavement material. This allows for larger areas of road to be widened and/or rehabilitated from the same funding allocation.
Additives on stabilising projects include cement, cement/slag blends, cement/flyash blends, cement/flyash/lime blends, hydrated lime, quick lime and foamed bitumen.

During preconstruction, tests are performed on the material to be stabilised, determining which additive and application rate should be used. This determines which additive will maximise the quality of the pavement ensuring longer lasting life of the asset. 


Spreader truckAll RoadTek stabilisers have the capacity to stabilise to a depth of 500mm and have variable moisture control to enable the moisture to be altered progressively if required. All stabilisers operate with a spreader truck to spread the additive. RoadTek stabilisers satisfy the Transport and Main Roads plant requirements standards MRS11.07.
RoadTek spreader trucks have a 14 tonne legal capacity and a computerised distribution system. The computerised powder distribution system (operated from inside the cab) ensures consistent spread of the additive.

Delivering successful projects

The Accelerated Road Rehabilitation Program on the Dawson Highway

Location: Dawson Highway, between Calliope and Banana
Project details: Rehabilitation of 650,000m2 of the Dawson Highway east and west of Biloela.
Productivity: The project achieved an average productivity rate of 4,000m2 – 6,200m2 per day. This rate was maintained for the full six-and-a-half-month project duration, well above the customer’s estimated production rate.

The Injune Project

Location: Carnarvon Highway, Injune
Project details: The project required widening of both sides of the road with two layers of pavement material. Limited availability of pavement material meant the original design could not be achieved. RoadTek proposed an alternative involving stabilising the existing shoulder material to use as the sub-base pavement layer and importing additional material to form the base pavement layer. This innovative solution reduced costs for pavement material supply and provided a better quality product.

Burke Development Road

Location: Cloncurry
Project details: The Burke Development Road was a major rehabilitation project which involved full width stabilisation of 36 kilometres at the Burke and Wills three-way intersection near Cloncurry.


The following fact sheets is available to download:

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To contact your local RoadTek depot, please visit our regional contacts page.

Last updated
29 August 2017