Improved durability of concrete
Concrete is the preferred solution for durable impact-resistant traffic barriers along the median of major roads and on the parapets above steep embankment slopes or retaining walls. The structures are usually precast or slipformed in situ and contain high quantities of reinforcing steel to resist vehicular impact.
Concrete is also used extensively for road decks and carriageway surfacing as an alternative to asphalt-bound surfaces and is the preferred material for precast rail sleepers.
The addition of synthetic macro and micro fibres into the concrete in these applications can eliminate the need for steel reinforcement which leads to a reduction in cost, faster construction time and lower environmental impact.
Additionally, the fibres serve to reduce the laitance of the concrete, improve freeze-thaw resistance and significantly improve durability in terms of impact absorption and abrasion resistance, subsequently reducing cracking and surface spalling. This improves traffic safety and reduces the need for maintenance and replacement.
Adfil synthetic fibres added to concrete barriers and pavement improve impact and abrasion resistance and freeze-thaw resistance which both increase the lifetime of the concrete.
The addition of micro synthetic fibres to concrete used for precast train sleepers improves impact and abrasion resistance while adding macro fibres increases flexural strength.
Functions:
- Reducing plastic shrinkage
- Enhancing residual flexural strength
- Improving freeze-thaw resistance
- Increasing impact and abrasion resistance
- Improving chemical resistance
- Reducing the need for maintenance and replacements of cracked sleepers, barriers, etc...
- Minimizing steel reinforcement
Relevant products:
