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Addaset resin bound aggregate paving along the promenade at Lusail Boulevard, Qatar
Resin-bound surfacing — technical data

PU Addastone

Resin bonded polyurethane surface dressing

Manufacturer Addagrip Terraco Ltd
Country of origin United Kingdom
System family Resin-bound surfacing
Supplied and applied by Earth Layers

The product

Resin bonded, not resin bound: the resin is squeegeed onto the substrate and aggregate is broadcast into it. The result is a textured, high-grip dressing rather than a permeable screed, and the substrate preparation rules are much stricter.

Where it is used

High-grip surface dressing over concrete or bituminous bases Ramps, slopes and areas needing texture Decorative dressing where a permeable build-up is not required

Substrates

Concrete primed with EP Addastone Primer, moisture below 4%, free of rising damp — typically one week per 25 mm of new concrete New bituminous: 50–60 mm AC20 Dense Bin 100/150 base course with 25–30 mm AC6 Dense Surf 100/150, laid to a fall of 1:40 to 1:60 Bituminous surfaces dried at least 7 days before shot blasting, or 28 days if not shot blasting Core samples recommended to confirm base suitability

Application data

Coverage, thickness, mix and cure, as declared by the manufacturer. Site conditions in the Gulf sit at the top of most of these ranges — allow for it in the programme.

Product Two-part pale buff polyurethane resin surface dressing
Mixing Part A stirred to homogenous consistency, Part B scraped in, mixed several minutes with a low-speed drill
Laying Applied by 3 mm serrated squeegee and back-rolled to even out
Finishing Swept and vacuumed on completion, and again until aggregate shedding is exhausted
Packaging 20 kg and bulk units
Storage Clean dry area out of direct sunlight and extremes; 6 months unopened, oldest stock first

Performance data

Every figure below is reproduced from the manufacturer's own technical data sheet, with the test standard it was measured against. The sheet itself is in the download section.

PropertyResultStandard
Concrete moisture limit Below 4%, free of rising damp Addagrip data sheet
Bituminous base 50–60 mm AC20 Dense Bin 100/150 + 25–30 mm AC6 Dense Surf 100/150 Addagrip data sheet
Falls Minimum 1:40 to 1:60 Addagrip data sheet
Application window 5 – 30 °C, RH not above 80%, substrate 3 °C above dew point Addagrip data sheet

Where not to use it

The limits are as much a part of the specification as the performance. Everything here is stated on the manufacturer's data sheet.

Surfaces must be dry — do not apply in wet conditions Not below 5 °C nor above 30 °C; relative humidity not above 80% Substrate must be 3 °C above the dew point Addastone Thixotropic Agent must be added for any asphalt application Aggregate colour varies between batches; iron particles can cause rust spotting This is not a permeable system
Specification clause

Resin bonded surface dressing: Addagrip PU Addastone two-part polyurethane resin applied by 3 mm serrated squeegee and back-rolled, with aggregate broadcast to excess and surplus swept and vacuumed. Concrete substrates primed with EP Addastone Primer, moisture content below 4%. Bituminous substrates to 50–60 mm AC20 Dense Bin 100/150 and 25–30 mm AC6 Dense Surf 100/150 laid to falls of 1:40 to 1:60. Addastone Thixotropic Agent added for all asphalt applications. Core samples to be taken to confirm base suitability.

Square brackets mark the choices that belong to the project. Send us the finishes schedule and we will return the clause completed, with the sample and mock-up programme against it.

Documents

Every document is the manufacturer's own, reproduced in full and unaltered under our cover. Free to download, no form.

The rest of the

Addaset Resin bound surfacing Addaset ECO Resin bound surfacing with recycled aggregate Addaset Non UVR Resin bound surfacing, non-UV-stable Addaset TP Polyurethane resin for tree pits Addacolor Coloured resin bound surfacing Addaflex R Resin bound rubber stone surfacing Addaflex R UV Resin bound rubber stone surfacing, UV-stable Stonebound UV Resin bound surfacing, UV-stable Stonebound Non UVR Resin bound surfacing, non-UV-stable Terrabase Resin bound surfacing, high permeability Addastone Thixotropic Agent Thickening filler

Technical support for the design team

We supply the material and we apply it, so the specification and the workmanship sit with one party. Send a finishes schedule, an elevation or a mood board and we will come back with the system, the build-up, the sample programme and a completed clause.

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