UK Concrete Show 2026: A Defining Shift Towards Controlled, Low-Carbon Concrete

UK Concrete Show 2026: A Defining Shift Towards Controlled, Low-Carbon Concrete

Insights from our construction team: Dr. Mike Barrow, Peter Filius and Jamie Hughes

The clearest takeaway from the UK Concrete Show 2026 is that concrete formulation is becoming more complex. Success now hinges on controlling that complexity. The industry is firmly committed to lower-carbon systems: reduced clinker, higher SCM use, and tighter water ratios are standard practice. While these changes cut carbon, they increase instability in fresh concrete.

The real challenge is not improving strength, it is rheology control.

Producers report that achieving target strength is rarely the issue. The challenge lies in maintaining consistency, stability, and usability in sensitive, low-water, SCM-rich mixes. Small variations in materials or processing now cause segregation, inconsistent flow, poor pumpability, and batch-to-batch variability. Many modern systems fail not in design, but in execution.

Rheology is the primary challenge.

Rheology control has overtaken strength (and traditional workability adjustments) as the key performance lever. Flowability under shear, particle suspension, spraying, placing,and finishing. Without effective rheology control, the practical benefits of low-carbon formulations cannot be realised.

Acti-Gel® 208 can deliver at low dosages:

• Enhanced particle suspension in complex systems
• Improved cohesion without raising water demand
• More consistent flow behaviour despite raw material variations
• Reliable performance in demanding low-water mixes

It does not alter the direction toward lower carbon, it makes that direction workable.

The need for precise rheology control is especially critical in both existing techniques like shotcrete but also emerging applications like 3D printed concrete, where mixes must flow under shear yet recover quickly after application.

The commercial reality

Performance alone is no longer enough, it must be repeatable and scalable.

Producers seek consistency across variable inputs, reliable supply, and expert technical support for formulation changes. This aligns directly with the RBH Group and our principal partner Active Minerals International: combining UK/EU distribution, long-term partnerships, and hands-on application expertise.

Final perspective

Lower-carbon, more complex concrete systems are here to stay. The differentiator is no longer who can formulate them, but who can control them effectively in practice. Rheology sits at the centre of that control.

For more infomation on how we can support your formulation needs Contact Us