Stevenson has been working with the natural volcanic material perlite to create a concrete product with a dramatically reduced carbon impact.

X-Ray Fluorescence Spectrometry (XRF) handheld devices are a quick screening tool used to assess soils for contamination.

Breaking Load of Segmental Pavers testing measures a load-bearing capacity in a bending application.

The Masonry Unit Compressive Strength test assesses the load-bearing capacity of masonry wall units or segmental pavers.

An optimal binder level is established with an ITS test, indicating the overall strength of a blend.

Otherwise known as the ALD test, the size and shape test is used to define the average least dimension versus the average greatest dimension. 

Categorises the aggregate into a number of different quality groups based on the resistance of the aggregate to cycles of wetting and drying. 

The Cleanness Value test measures the amount of fine clay-like material coating surfacing and concrete aggregates.

Particle Size Distribution testing measures the amount of different sized particles in an aggregate product. 

The Sand Equivalent test provides an empirical measure of the quality and quantity of fines in an aggregate.

The Plasticity Index test is used to assess the quality of the fines in an aggregate.

Our F2 filter sand meets stringent standards developed by Stevenson Aggregates.

Our concrete sand conforms to New Zealand Standard NZS 3121 Water and Aggregate (NZS 3121).

Ideal for smaller concreting jobs, our Builder's mix is available at each of our locations.

If you require a product we do not currently manufacture, please give us a call. We provide a made-to-order service.

We provide a variety of high-durability mixes that contain cementitious supplements like fly ash, slag, and micro silica. 

We supply a variety of concrete mixes for use in spray applications.

High strength and early setting concrete, available in a range of specifications for precast applications.

Our decorative mixes provide a range of options to create architectural finishes for landscaping, flooring and driveways.

We supply a range of durable mixes developed specifically for factory, warehouses and industrial manufacturing plants.

Flow fill is a backfill mix that’s quick to place and doesn’t require compaction. Flows easily into voids, levellling and hardening to produce a low strength hard fill.

Our thermal backfill mix dissipates heat generated by underground high voltage cables.

Self-compacting concrete (SCC) is a highly flowable, yet stable concrete that can spread readily into place to fill formwork.

Stevenson Hydrovia® mixes allow water to drain through the concrete to percolate back into the ground.

A low slump concrete mix which is easily formed but requires high vibration to achieve adequate compaction.

A high flow mix for filling retaining walls and hollow masonry blocks.

Delivered by a concrete truck and offloaded into a concrete pump for placing in areas that are difficult to access.

Delivered to site in a concrete truck and offloaded directly from the chute.

We can manufacture to your specification. If you require a product we do not currently manufacture, please give us a call. We provide a made-to-order service.

We manufacture a variety of modifed aggregates including cement or lime stabilised.

We produce a variety of non-specified products for use in infrastructure, construction and landscaping.

We operate operate managed fill at Drury Quarry and cleanfill at our Tūākau Sand Plant.

Fly Ash is a byproduct of coal-burning by electric generation power plants. It improves workability, durability, and pumpability, reduces demand for water and increases concrete’s long-term compressive strength.

We produce a variety of specified products for use in insfrastructure.

We produce a variety of sands for rural, drainage, sports and horticultural applications. 

We supply New Zealand Standard NZS 3121 Water and Aggregate (NZS 3121) compliant concrete aggregates across all of our locations.

We manufacture a variety of specified and non-specified aggregates for drainage applications.

Sealing and asphalt chips manufactured to specification and optimised for maximum grip and strength.

Our quarries produce a variety of aggregates for hardfill and subgrade improvement applications.

Stevenson offer a range of aggregates that meet national and local authority specifications for basecourses and sub-basecourses.

Specialised higher slump mixes that are placed using a tremie pipe system.

Drilled cores of hardened concrete can be tested to assess strength and density.

Splitting Tensile Strength testing measures the amount of stress on the tension face of bending concrete.

Flexural Tensile Strength assesses concrete’s ability to resist bending.

We can test ready-mix concrete from the plant, mixer truck or onsite skip units.

To assess the compression strength of fine-grained cementitious grouts, we test cube samples.

The Compression Strength test measures the ability of the concrete to support loadings over a given area.