General

All normal concrete grades, specified by compressive strength, with all adhering to AS1379 quality requirements. 80mm or 100mm slump. 10mm and 20mm aggregate. 20, 25, 32, 40 and 50 MPa. For strength grades above 50 MPa.

 

Block Fill

A flowable concrete mix used to fill hollow masonry blocks and cavity walls. High strength, with 150mm, 180mm or 230mm slump. 10mm aggregate. 15, 20, 25, 32, 40 and 40 MPa.

 

Spray Mixes

Spray Mixes are used for shotcreting where concrete is pumped using a concrete pump where a compressed airline is connected to the delivery hose and actually throws the concrete from the hose. These mixes are generally used for swimming pools, retaining walls and embankments. Spray mixes are generally 20 mpa to 50mpa and have a design slump of 60, Silica fume is used to help the concrete stand up vertically.

 

Early Strength

Concrete with guaranteed early strengths. Typically used for tilt up, precast, pre-stress or early formwork stripping applications where early strengths are important.

 

Topping

Normal-class concrete, specified by compressive strength. Up to 10mm aggregate available, subject to regional variances. 80mm slump. 20, 25, 32 and 40 MPa

 

Foundation

Foundations and footings as they are also know by are typically made of 20Mpa or 25Mpa concrete with rebar reinforcement that has been poured into an excavated trench. The depth and width of the trench will be determined by an engineer. Foundations are commonly used on sloping blocks where bricks are laid directly onto the concrete and the house will generally have stumps to support the flooring.

 

Stabilised Sand

Stabilised sand is used on applications where a compacted or hardened fill is required. Most common practice is backfilling trenches over the top of pipes but is also used for backfilling around fiberglass swimming pools. Stabilised sand comes in 3% to 30% cement content

 

Shotcrete

 

 

 

Normal Class Concrete

 

 

 

No Fines

No fines concrete is used when strength is required and water must be able to penetrate the surface. Common use of no fines concrete is behind retaining walls, around trees and on driveways where too much of the site is covered not allowing for water to penetrate into the soil. It achieves excellent water drainage.

Driveway Concrete

 

 

 

Slab Concrete