Structural concrete CEVO

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Overview
CEVO low carbon concrete from Tarmac provides engineered concrete mixes designed to reduce embodied CO2 while delivering the performance required for architectural and structural applications. Mixes are tailored to meet specified carbon reduction targets and application performance criteria, with options from near‑zero ratings to higher categories under industry frameworks.

Aligned with sustainability ratings
CEVO mixes are aligned to the Global Cement and Concrete Association (GCCA) Low Carbon Concrete Route map ratings to simplify specification: specify CEVO and the desired carbon rating to receive an engineered solution that supports client sustainability targets.

Materials and technology
CEVO leverages alternative constituents and modern materials science, including limestone fillers, alkali‑activated systems, ground granulated blast furnace slag (GGBS) and fly ash (mix dependent), to lower embodied CO2 while maintaining required durability and strength.

CEVO Digital
Realtime maturity and performance monitoring is available via CEVO Digital: on‑site sensors and AI predictions for strength and temperature support quality assurance and construction decision‑making.

Performance benefits

• Reduced carbon footprint: mixes engineered to minimise production CO2 emissions.
• Durability: designs tailored to deliver long service life comparable with conventional concretes.
• Strength: structural performance achievable depending on mix and specification.
• Versatility: suitable for structural and non‑structural uses, paving and decorative finishes.
• Availability: national supply capability for standard and bespoke CEVO designs.

Low carbon floor screeds (example)
Topflow Screed A is an example low‑carbon floor screed available in the UK: it uses a cement‑free anhydrite binder and can reduce carbon footprint by around 80% versus a conventional sand‑cement screed, with an approximate 87% lower CO2e per m2 when reduced screed depth is accounted for.

Case studies (examples)

• Hexham Flood Alleviation Scheme
• National Rehabilitation Centre – Stanford Hall
• Central 1 (C1) section of HS2

CPD and training
Accredited CPD sessions are available, including a 60‑minute presentation titled 'Understanding Low Carbon Concrete' to support architects, design engineers and project managers in specifying lower carbon solutions.

Technical specifications

• Product family: CEVO (low carbon concrete)
• Brand: Tarmac
• Material type: concrete
• Delivery: bulk supply (national capability for standard and bespoke designs)
• Aligned standard: GCCA Low Carbon Concrete Route map ratings
• Alternative constituents: limestone fillers, alkali‑activated solutions, GGBS, fly ash (mix dependent)
• Digital capability: realtime maturity/performance sensors with AI predictions (CEVO Digital)
• Typical applications: structural concrete, non‑structural concrete, paving, decorative concrete, low carbon floor screeds
• Topflow Screed A (example): cement‑free anhydrite binder; ~80% carbon reduction vs sand‑cement screed; ~87% lower CO2e per m2 when reduced depth considered
• Engineered to meet specified application performance criteria and carbon rating targets