Buildhub FibreCrete Fibre-Reinforced Cement 40kg

The Buildhub FibreCrete Fibre-Reinforced Cement eliminates the most common quality problem in concrete floor slab construction — plastic shrinkage cracking during the first hours after placement — by incorporating a factory-calibrated dose of polypropylene microfibre reinforcement directly into the cement blend. The fibres are uniformly distributed through the powder at a dose equivalent to 0.6kg of fibre per cubic metre of produced concrete — the most widely demonstrated effective dose for plastic shrinkage crack control — without the mixing time and operator skill requirements that site-addition of loose fibres demands.

Plastic shrinkage cracks form in concrete floor slabs when the rate of surface evaporation exceeds the rate at which bleed water rises to replace the lost surface moisture, causing the concrete surface to contract and crack before sufficient cement hydration has occurred to provide tensile strength. These fine, random, early-age cracks — typically 0.1mm to 0.5mm wide and distributed across the slab surface — are not structurally critical but provide pathways for aggressive agents to penetrate the concrete and accelerate long-term deterioration, and are visually unacceptable in exposed concrete floor applications.

FibreCrete’s factory-incorporated polypropylene microfibres act as a three-dimensional arresting grid within the fresh concrete that intercepts forming plastic shrinkage cracks at the micro-scale before they propagate to surface-visible widths. The fibres do not prevent the volume change that causes plastic shrinkage — they prevent that volume change from propagating as discrete visible cracks by providing a distributed tensile resistance throughout the concrete body.

FibreCrete is the preferred specification for industrial warehouse floors, distribution center slabs, factory floors, and any application where plastic shrinkage crack control is specified or critical for surface performance and long-term durability. Compatible with all standard concrete admixtures and supplementary cementitious materials.