![]() ![]() Use as a decorative stone or alternatively within a Vuba Resin Bound Trade Kit. ![]() It is not a requirement to prime asphalt surfaces. Concrete should be primed prior to application using our Easiprime or Epiprime (and seeded with a 1.4 - 1.8mm quartz).Īsphalt (Bituminous Macadam) Preparation:Īllow the asphalt to oxidise for 7 days prior to application of the Vuba Resin Bound Surface. Prepare concrete by mechanical means to provide a sound, clean, dry substrate that is free from laitance and suitable for application of the resin bound surfacing. ![]() ![]() A flexible joint filler should be used at edgings where there is potential for movement to separate the surfacing from the edging. Edgings should be securely fixed to prevent movement. Protect all edges abutting soft landscaping with brick, steel, timber or concrete to prevent damage to the surfacing. The in-fill aggregate must be compacted to ensure the profile of the cellular grid is still visible, and capable of bonding to the resin bound system.įailure to compact the stones within the grid correctly will result in a slump of the resin bound material through the grid, causing delamination. The cellular grid should then be filled with well compacted 4/10mm graded crushed aggregate to BS EN12620. The grid should be set on to a well compacted sub-base as laid out above. We would recommend to use a cellular grid of 40-50mm in depth. An integral drainage system is not required. Rainwater will flow through the permeable Vuba Resin Bound System, and through the open grade binder course. A minimum 1 tonne “sit on” roller should be used when possible and the contractor must ensure that the construction is fully restrained at all edges to ensure dimensional stability. Adequate compaction of the sub-base and base is essential to prevent cracking. It is advisable to use a harder grade of bitumen when machine application is possible and 70/100 pen (or harder) is preferred.īituminous materials with a higher pen value will be too soft and may deform in warm weather. The bitumen binder of asphalt concrete must have a pen value no greater than 100/150, when tested in accordance with EN 1426 Needle Penetration Test. Water will flow through the Vuba resin bound system and run across the concrete surface. Ensure that the concrete has a minimum design strength of C35 and that the concrete has a minimum compressive strength of 25N/mm2 before the surface is prepared, in accordance with BS 8500-2:2015.Įnsure that falls are in place to an adequate drainage system when applying to an impermeable concrete base. Bays should be linked with steel mesh reinforcement, or if already in place, a surface grade mesh should be embedded in the surface using an epoxy bedding coat.ģ. Open bay joints are likely to cause cracking in the surfacing and formation should be prevented by application of Polycrete repair mortar into the joints. Concrete bay proportions should be ideally 1:1 and should not be greater than 3:2, long narrow strips of concrete will crack across the bay width and these cracks are likely to be mirrored in the surfacing.Ģ. This would be a minimum 150mm depth of well compacted Type 3 granular sub-base to SHW clause 805, or 4/40mm, 4/20mm crushed aggregate to BS EN12620 or locally available secondary or recycled aggregates which comply with the above specification blinded with 2/6.3mm graded crushed concrete aggregate to BS EN12620.ġ. We would advise the inclusion of a permeable membrane beneath the system to prevent growth of weeds.īefore application of an Asphalt / Tarmac base, concrete or cellular grid, there should be in place the correct sub-base. We would recommend the ideal substrate to be a compacted hardcore, or other stabilised surface should as concrete, existing paving, macadam etc. When considering your base, you should think about 'is this base strong enough for my intended purpose? The base is of less importance with Easihold than Resin Bound, as Easihold is also a wearing course. ![]()
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