FiberMaxMI™ uses ultra-thin synthetic micro fibres to control plastic shrinkage cracking. Distributed throughout the mix, they prevent evaporation cracks while improving permeability and abrasion resistance.
FiberMaxMI™ polypropylene fibres create countless adhesion points to stop plastic shrinkage cracks from forming as water evaporates, meeting ASTM C1116 standards.
Targets plastic shrinkage precisely when most cracks occur.
Reduces bleeding, surface defects, and curling with excellent finishing.
Works in all residential slab-on-grade projects without affecting set time.
Our CBM Concrete Solutions product line covers a wide range of project needs – from self-consolidating and high-workability flatwork mixes to fibre-reinforced, accelerated strength, extended workability, and durability-focused formulations. All mixes are performance-based and CSA-compliant. Our technical team can also develop custom mix designs for projects with specific structural or environmental requirements.
We work directly with engineers and contractors before the first truck arrives – reviewing exposure class, strength development, pumping distances, and workability windows to build a concrete program around your project, not around a standard product. The Gordie Howe International Bridge, the Eglinton Crosstown LRT, and 141 Bay are examples of that process at work.
Yes. Every customer has access to the same ready mix concrete solutions and quality-controlled mixes that go into our largest builds. Get in touch with your local CBM representative to discuss your requirements.
CBM is proud to be part of Votorantim Cimentos, one of the largest building materials companies in the world. Our VC Way is the operating philosophy that runs across the entire Votorantim Cimentos family – and it shapes how our teams work every day. For our customers, that means decisions made close to the job, clear communication from order to delivery, and accountability that does not stop once the truck leaves the plant. The work we did at Ripley’s Aquarium, the Gordie Howe International Bridge, and other countless projects reflects exactly that – sustained technical collaboration, dependable execution, and a standard of care that holds across the full life of a project.
How do FiberMaxMI™ micro fibres specifically target plastic shrinkage cracking?
Ultra-thin polypropylene fibres with high aspect ratios create millions of distributed connections that arrest micro-cracks as water evaporates from fresh concrete, eliminating over 85% of plastic shrinkage potential. Their near-invisible size ensures no impact on finishability while meeting ASTM C1116 standards.
Ideal for slabs-on-grade like residential driveways, patios, basement floors, stair pans, and precast toppings where plastic shrinkage control is critical but structural reinforcement is not required. Does not replace steel rebar or WWF—focuses on early-age crack prevention.
Yes, the micro fibres integrate seamlessly with standard plasticizers, accelerators, and air entrainers, providing excellent workability and surface quality for power troweling or broom finishes. They also enhance green strength and reduce bleeding without dosage conflicts.
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