SteelX Rebar
For engineers

Data you can put your name to

Design intent relies on predictable materials. SteelX is specified with third-party test data, a published design method and real project precedent — so it survives peer review and value-engineering both.

The problem

Where conventional reinforcement lets the design down

Mesh and bar are designed on paper to sit in the right place and control cracks. On site they get walked into the subgrade, lose cover, and only start working once the concrete has already cracked. Traditional steel fibre was meant to fix that — and brought its own problems.

Placement you can't verify
Mesh gets walked down, chairs tip, cover is lost. The reinforcement ratio on the drawing rarely matches what's in the slab — and once it's poured, nobody can check.
Reactive crack control
Bar and mesh only take load after the concrete has cracked. Shrinkage cracks form first, then the steel tries to hold them together — at joints, re-entrant corners and restrained edges.
Joints as failure points
Saw cut joints every 4–6 m curl, spall and open up under traffic. Each one is a maintenance liability that exists only because the reinforcement can't manage shrinkage on its own.
Fibre that pulls out
Hooked-end fibres peak, then lose load as the hook straightens and slides. That makes post-crack capacity hard to rely on in design — and harder to defend in peer review.
What we give you

Design support, not sales support

Mi Concrete Design
The engineering platform for SteelX design tools, slab thickness calculators and specification templates. Design mesh-free, joint-free and watertight systems with the numbers in front of you.
Specification support
Complete specification packages with dosing guidance, sequencing, acceptance criteria and field checks — reducing RFI churn and approval time on your projects.
Performance data
Third-party tested data including EN 14651 residual strength and abrasion resistance results. Defensible in peer review and VE both.
CPD presentations
A CPD-accredited presentation for your team covering twisted steel reinforcement and where it genuinely changes a design. Booked around your workflow.

The design basis

SteelX is designed against published standards and third-party test methods — not proprietary claims. These are the references your specification and your peer reviewer will both recognise.

CCAA T48
Guide to industrial floors and pavements — the basis for the tensile resistance method used in mesh-free slab design.
AS 3600
Concrete structures. SteelX designs are carried out within its framework, not outside it.
AS 3735
Liquid retaining structures — the 0.10 mm crack width threshold used for structural watertight design.
EN 14651
Residual flexural tensile strength test. Establishes the post-crack capacity used in design.

How a project runs

From first call to the pour. Most of the work happens before anyone orders concrete.

01
Send the drawings
Current reinforcement, slab thickness, joint layout, exposure classification and loading.
02
We run the design
An equivalent SteelX design, the dosage, and what comes off the job — free, and written back to you.
03
Specification issued
Clause text, acceptance criteria and CAD details you can drop into the drawing set.
04
Dosed on site
We dose SteelX into each truck at the pour with a fibre blower, and log every load in QA McClay.
05
First pour attended
Technical supervision on site for the first SteelX pour, so the crew sees it done once.
Mi Concrete Design

The engineering platform

Design tools, slab thickness calculators and specification templates for SteelX systems — mesh free, joint free and watertight. Free for specifying engineers.

micd.mcclay.au →
Engineering services
✓Mi Concrete Design platform access
✓Project-specific design and specification support
✓Mix design assistance with your ready-mix supplier
✓Technical data sheets and third-party performance reports
✓CPD-accredited presentations for design teams
✓Peer review and value-engineering support

Earn CPD points at your desk

A concise, real-world presentation your team can apply to current projects. We come to your office and schedule around your workflow.

Book a presentation →

Get a free analysis on your project

Send us your drawings and we’ll show you what comes out: the mesh, the rebar, the thickness, the weeks.