Ronacrete RonaDeck Resin, for use with pedestrian-and-vehicle-grade aggregates in bound surfacing systems.

Please Note: this product is manufactured in a grade suitable for use in the UK for the current season, if you require an alternative grade suitable for application at a different time of year (Options are Summer, High-Summer, Winter or Mid-Winter) please contact our Technical Team on 0113 2455450 (option 2).

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• Blooming
• Working Times and Temperatures
• Application Conditions
• Mixing
• Application
• Cleaning Tools

Blooming

Blooming occurs, largely in late Autumn, Winter and early Spring, when conditions for application of resins are not ideal. Polyurethane resins may harden quickly but even at 20℃, initial cure does not occur until 24 hours have elapsed and initial cure takes longer at lower temperatures. Initial cure time is important because until it is achieved, the resin remains open to absorption of water.

On dry days with air temperatures in excess of 10℃, conditions may seem benign but such conditions can produce blooming. Condensation occurs when the dew point is close to the air temperature and whenever the dew point rises to within 3 degrees of air temperature, condensation will occur. Application of resins during these adverse conditions, or for 2 days following application if conditions remain similar or worsen, runs the risk of blooming caused by dew forming on the resin surface or fog condensing on the surface.

When a car is parked for the night in conditions when the dew point is reached, condensation will occur by morning, shedding condensed water onto the driveway surface. When the weather is colder, frost forming on the surface is also a risk when the temperature rises and the frost reverts to liquid form.

RonaDeck Resin Bound Surfacing resin may be applied to surfacing which has been affected by blooming, but not until the existing resin is removed. Polyurethane resin does not remain open to adhesion of a further coat for very long and it must be assumed that preparation to abrade or ideally remove the surface resin, especially resin which has bloomed, is required before application of a further coat is attempted. It is preferable to carry out the works during late April to September when the conditions which caused the blooming are less likely occur.

Working Times and Temperatures

Working time is affected by temperature; at temperatures above the maximum recommended in the following tables, the pot life and working time may be insufficient to allow a wet edge to be maintained. Work should therefore not proceed when product and / or air temperature exceeds recommendations. The air temperature must therefore be monitored during application and work should stop when temperature exceeds recommendations.

Care must be taken to keep materials as cool as possible in warm weather. At low temperatures RonaDeck Resin Bound Surfacing resin will not flow sufficiently to achieve a smooth finish and work should not proceed when air, material or substrate temperature is below 5℃.

Application Conditions

Application during rain or before rain is not recommended.

Light rain on the surface affect the bond between particles, reducing the strength of the system.

Note that application to a damp substrate will reduce bond strength.

Unmixed aggregate must be kept dry at all times. Care must be taken to keep the mixing station dry, thus avoiding entrapment of moisture between aggregate and resin.

Do not apply RonaDeck Resin Bound Surfacing when rain is expected within 24 hours of application at 20℃.

Do not apply RonaDeck Resin Bound Surfacing when fog, frost or dew is expected within 48 hours of application.

Mixing

1. Place RonaDeck Resin Bound Surfacing Aggregate (100kg) followed by RonaDeck Fine Aggregate (6.25kg) into a clean, dry, forced action mixer minimum capacity/ power 120 litres/ 1.8kW, Baron E200 mixer or similar
2. Scrape all of the contents of RonaDeck Resin Bound Surfacing B component into the larger A component container and mix with a slow speed drill (≤ 450RPM) and MR2 paddle mixer attachment for 2 minutes
3. Immediately add the mixed resin to the aggregate in the mixer. Mix the aggregate and resin together until all the aggregate is evenly coated with resin. Mix for approximately 3-4 minutes. Overmixing will increase heat generation, reduce working time and may affect the colour. Inconsistent mixing times may cause colour variation

Application

1. Discharge the mixed resin and aggregate onto the prepared surface, level and smooth. Excessive compaction will reduce permeability
2. Finish the surface with a suitable float avoiding overworking which may result in “trowel burn”. RonaDeck Low VOC Tool Cleaner/Trowel Finishing Aid should be used if required, the use of white spirit is not acceptable
3. For improved slip-resistance on steep gradients, apply RonaDeck Resin Bound Surfacing Anti-Slip Aggregate to the wet resin at the rate of approximately 0.1kg/m², avoid a patchy appearance by scattering evenly
4. Always ensure that a wet edge is maintained, joints between mixes will be visible unless the older mix is still workable

Cleaning Tools

Tools and equipment may be cleaned with RonaDeck Low VOC Tool Cleaner/ Trowel Finishing Aid, which will remove uncured resin.