Asphalt reinforcement fiber
Mixture stability now, fewer lane closures later
AsphaltGuard can contribute to improved mixture performance and lifecycle economics depending on mix design and laboratory verification. It is a fiber, not a modified binder, and the two do different jobs.
The expensive problem
Pavement cost is dominated by what happens after opening
Construction is one payment. Maintenance, closures and delay are paid repeatedly.
- Binder drain-down in gap-graded and high-binder mixes
- Rutting in bus lanes, port aprons and slow-moving traffic
- Fatigue cracking under repeated heavy axle loads
- Reflective cracking through overlays on jointed bases
- Maintenance intervals that come round faster than budgeted
- Lane closures, traffic management and user delay cost
The Polyguard solution
AsphaltGuard PG AS-20, dosed at the plant
AsphaltGuard is dosed into the pugmill or drum mixer by mass of mix. The fiber network helps hold the binder film and stabilise the mixture, which is where drain-down control, fatigue resistance and rutting resistance come from. What it delivers on your job depends on your aggregate, binder and gradation — which is why every specification starts with a laboratory evaluation.
- Grade
- PG AS-20
- Fiber length
- 20 mm
- Typical dosage
- 0.05–0.3% by mass
- Added at
- Pugmill / drum mixer
What it is aimed at
Performance targets, stated honestly
Fiber and polymer-modified binder are not interchangeable. Each is specified for a different reason, and they are frequently used together.
- Drain-down control in high-binder and gap-graded mixes
- Mixture stability during transport, laying and compaction
- Fatigue resistance under repeated loading
- Rutting resistance in slow and channelised traffic
- Crack resistance in surfacing and overlay layers
- Longer maintenance intervals where testing supports it
- Fewer lane closures and lower user delay cost over the life
Lifecycle, not unit rate
The cost that decides a pavement is the second resurfacing
Fiber adds a small, calculable amount per tonne. Resurfacing costs an order of magnitude more per square metre — and every cycle postponed inside the analysis period is a full resurfacing avoided, plus its traffic management.
Steel purchaseTransport & storageCutting & lap wasteChairs & spacersPlacing labourSupervisionPlacement delayPolyguard fiber, dosed in the mix
Illustrative proportions. Nothing here is a performance guarantee.
Two horizons
At the plant and over the life
At the plant and on the paver
- Drain-down controlled in high-binder mixes
- Mixture holds together through haul and laydown
- No change to paving equipment or crew method
- Dosed by mass with a simple, auditable feed rate
Over the pavement life
- Fatigue and rutting resistance targeted by design
- Maintenance intervals extended where testing supports it
- Fewer lane closures and less traffic management
- Lower user delay cost on a road that stays open
Worked example — 10 km of 7.3 m carriageway
Illustrative rates and assumptions. The interval extension is an input, not a claim.
- Paved area
- 73,000 m²
- 50 mm layer at 2.4 t/m³
- 8,760 t
- AsphaltGuard at 0.05% by mass
- 4,380 kg
- Fiber cost at 3.80 /kg
- ≈ 16,644
- Added cost per tonne
- ≈ 1.90 /t
- Resurfacing at 11 /m²
- 803,000 per cycle
- 24-year horizon at 6-year interval
- 4 cycles
- 24-year horizon at 8-year interval
- 3 cycles
One postponed resurfacing cycle is worth roughly forty-eight times the fiber cost of the whole job in this example. That is the argument — provided the interval extension is supported by laboratory verification on your mix.
Your numbers
AsphaltGuard lifecycle calculator
Set the analysis period and both maintenance intervals yourself. The calculator does not assume any performance benefit you have not entered.
AsphaltGuard lifecycle calculator
Fiber cost per tonne against postponed resurfacing.
CurrencyUSD
Result
- Paved area
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- Mix tonnage
- —
- Fiber required
- —
- Fiber cost, whole job
- —
- Added cost per tonne
- —
- Added cost per m²
- —
- Resurfacings, current interval
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- Resurfacings, target interval
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- Lifecycle saving per km
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- Lifecycle saving
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The extended maintenance interval is your assumption, not a Polyguard claim. Any change in service life must be verified by mix design and laboratory testing on your own materials.
Questions specifiers ask
Mix design and verification
Is this a replacement for polymer-modified binder?
How is the benefit demonstrated?
How is it dosed at the plant?
Does it change laying and compaction?
Price the whole pavement life cycle, not the unit rate
Send the drawing, the exposure class and the loading. You get a dosage recommendation, a data sheet and an installed-cost comparison against your current specification.