What We Do
NO FINES CONCRETE
No Fines Concrete is a type of pervious and lightweight concrete that is made up of only Coarse Aggregate, Cement and Water. It is commonly used in tunnelling projects as a sub-base layer to assist with water control. As the mixture has no fines or sand’s, water can pass through the air voids and drain off into drainage trenches.
SUB-BASE / CEMENT TREATED BASE /HEAVILY BOUND
Cement Treated Base (CTB) is a mixture of soils and/ or aggregates with cement and water. CTB is commonly used in roads, ports, transport yards and airfields as it has benefits of giving the above pavement a stronger base which can reduce fatigue and common failures up to the surface. It can be mixed with mobile pugmill plants and paved with traditional asphalt style pavers fitted with high density screeds. Single lifts of up to 300mm can be achieved depending on specification. Mix design and strengths can vary with CTB depending on the pavement structure and locally available materials. HBMs (hydraulically bound mixtures) are a mixture of aggregate with a binder that sets through hydraulic action. The traditional HBM (hydraulic bound material) is CTB/CBM (cement treated base/ cement bound macadam). It offers an alternative to more traditional flexible materials. The binder can be rapid setting like cement or slow setting like PFA and slag.
ROLLER COMPACTED CONCRETE
Roller Compacted Concrete gets its name from the method of construction used to place the material. Just like asphalt, it is laid by paver and then roller compacted. RCC is designed to a target grading and low water content. This means it can be installed like traditional asphalt and cement bound materials at high outputs without the need for long curing time or embedded rebar. RCC is constructed in a similar fashion to Cement Treated Base. The in-performance attributes are like those of a rigid concrete pavement. With the need for 24/7 operations, reduced maintenance, and durability in extreme working conditions - ports, harbours, airports, and the industrial sectors can all benefit from the buildability of RCC.
Why use Roller compacted concrete?
Economic: Eliminates early life rutting during overlay, reduces the risk of degradation at construction joints.
Efficient: 50% reduction in the speed of construction.
Choice of finish: The finished surface can be natural, power floated or brushed according to application.
Sustainable: Reduced CO₂.
Hard Wearing: Excellent surface toughness and point load resistance.
Cost Effective: Long term durability and reduced installation cost.
Mobile location: Manufactured on or close to the installation site by mobile plant.
Reductions: RCC speeds up and simplifies construction, reducing costs and programme time.
Fast: Offers quick installation and early trafficking.
Durable: Minimal maintenance and proven performance even in freeze thaw conditions. Offers resistance to chemical attack.
ASPHALT
Location – We have assisted our customers with asphalt labour support from Brisbane down to Melbourne and out to Canberra all from our base in Sydney.