|The following example of
resin bonded gravel was carried out to demonstrate the ease of application
and the aesthetic properties that are produced using this easy to apply
A materials list is provided at the bottom of this page.
This system is NOT recommended where the base doesn't have adequate falls to
ensure escape of water, if the base holds puddles during rainfall then do
NOT use this system as frost damage may result.
Our scattercoat system is more suited to areas prone to hold water.
GRAVEL SIZES: The size of gravel used determines the strength of the bonded
surface...the smaller gravel size equals a stronger bonded surface,
for vehicular areas like driveways a 1-3mm gravel is recommended, in some
cases a mix of 1-3mm and 2-5mm can be used.
Walkways paths, patio and garden areas etc can be laid using 2-5mm gravel.
Tree pits etc can utilise larger gravels.
|The area was first brushed to get rid of
any loose debris, then marked out using string lines, the plastic formed
angle bead was attached using STEVENS own brand glassfibre bridging compound
onto the primed (using G-fix primer) lines, alternatively masonry nails or
screws could have been used, in many applications these wouldn't be required
as edging bricks etc usually form the perimeter.
|Gravel bonded resin can be
used in many types of applications including: Footpaths, Driveways,
Tree-pits, Cycle paths, Roads, Patios, Pool surrounds, etc.
Can be applied to many surfaces including: Concrete, Asphalt, Wood,
Compacted MOT stone, etc.
Benefits include: Low-Maintenance, Non-Slip, Wheelchair & Pushchair
friendly, Logo incorporation, Easy clean, Long lasting, Very hardwearing,
Very attractive aesthetically, etc.
|The lettering was constructed from the
plastic angle, however this could be substituted using plywood/MDF blanks in
which case they would remain in the structure until the surrounding gravel
had cured (24 hours) they can then be removed and contrasting colour gravel
|Prime area first and allow
to become tacky, approx 30 minutes. Using a Bell type mixer introduce
50 kilos of gravel then pour in 3 kilos of thoroughly blended G-fix
resin/hardener mix. When the gravel is fully wetted out distribute in
the area and trowel down to achieve the flat surface, white spirit can be
used to stop gravel sticking to the trowel.
NOTE: Ratio of resin mix to gravel indicated is around 6% by weight which
normally allows full and complete wetting out. However, due to the
variation in porosity of some gravels it is recommended a trial area be
tested to determine quantities required.
On many flint type gravels the mix ratio can be reduced to approx 4% where 3
x 25kg bags of gravel to a 3kg g-fix kit. (again testing is recommended).
The total area covered is 7m x 6m (42mē) x 15mm
thick. We did actually use 3 bags (75kg) gravel more than anticipated due
to undulations in the concrete surface.
70m 15x15 plastic angle bead.
2 x No7 Bridger Compound.
2 x 5ltr G-Fix primer.
45 x 25kg bags 2-5mm gravel
24 x 3 kilo G-Fix kits including 3 x 3kg kits for the top
NOTE: on resin rich surfaces i.e. small pea gravel, silver sand or similar
can be scattered sparingly to achieve a non slip texture.
Because the area is subject to vehicular traffic a sealing layer of resin
(which increases strength) is applied to the cured surface at a rate of
approx 1 litre per 4mē.
The primer layer (polyurethane) is recommended an all concrete, wood or
metal surfaces, however it is replaced by resin on asphalt/tarmac etc.
Link to Gravel bonding notes:-