Xtreme Gravel Lock VDW 520 11 lbs

Product Specs

Applications	Pathways, wide paver joints, tree pits; light vehicular possible
Aggregate Size	Suitable for clean aggregates 1/16” to 1” diameter; glass chippings; damp aggregates OK (not wet)
Water Permeability	Very high
UV/Color Stability	High UV resistance; very high resistance to yellowing; possible temporary darkening or slight yellowing on bright white minerals
Pressure Washing	Pressure washer friendly
Application Time	Approx. 30 minutes at 20°C / 68°F (faster when warm, slower when cold)
Application Temperature	2–26°C / 37–80°F (do not apply on frozen ground)
Minimum Depth	1.5” for aggregates < 1/2”; for > 1/2” diameter: depth = 3× average diameter
Mixing Ratio (5 kg unit)	Binds up to ~240 lbs aggregate (~160 lbs glass chippings); bottles A & B have 1/4 markings for small batches
Batch Guidance	Each 1/4 of A+B mixes with max 60 lbs aggregate; mix 5 minutes until homogeneous
Tools	Heavy-duty paddle/drill mixer or gravity mixer; mixing tub; shovel; screeding tools; trowels
Storage Life	24 months unopened in sealed, undamaged packaging; dry, frost-free; do not store above 20°C / 68°F

Installation Instructions

Construction Site Requirements

For pedestrian areas:

• A stable and well-compacted gravel/sand bedding layer.
• The depth of the PHNA Xtreme Gravel Lock should be a minimum of 1.5″ after compaction and finishing.

For vehicular traffic:

• The product must be laid on a permeable concrete or mortar bed
  • We recommend the PHNA Xtreme Trass Bedding Compound (vdw 480).
• All elements must be correctly designed and installed for the anticipated traffic loads and in accordance with ASTM.
• The Xtreme Gravel Lock cannot be used to compensate for any settlement of the sub-structure.

Preparation

1. Clean the base material and any joint sides to ensure no contaminants or uncompacted materials are present.
2. Mask any adjacent areas that are not to be jointed in order to prevent any spots or staining from the epoxy.
3. We recommend preparing a test area, particularly with any sensitive materials, before installation.

Material Preparation:

• Any dirty or dusty aggregates should be washed thoroughly and dried before mixing to avoid discoloration and/or loss of strength.
  • Aggregate may be damp but cannot be wet.

Mixing

Tools Needed:

• Heavy-duty paddle/drill mixer or suitable gravity mixer, large mixing tub, shovel, screeding tolls, and trowels.

Instructions:

1. Add the appropriate amount of aggregate into the mixing tub or gravity mixer.
2. Followed by the appropriate amount of both A & B components of the Xtreme Gravel Lock.
   • (The 5kg units of Xtreme Gravel Lock will have 1/4 markings on each bottle, each 1/4 to be mixed with a maximum of 60 lbs. aggregate.)
3. Mix for 5 minutes until homogeneous.

Pro-Tip:

• For large areas where mixing more than 60 lbs. at one time may be necessary.
  • We recommend using a gravity mixer.
• Ensure the mixer is clean and has not been previously used to mix concrete or mortar.
• If using a gravity mixer, adhere to the 5-minute mix time.
• Then, the material can be transferred to a clean wheelbarrow for transportation if needed.

Application

1. Apply the freshly mixed material onto the prepared substrate.
2. Spread and level off with appropriate screeding tools or a trowel, then compact and smooth the surface with a trowel.
3. Material may get sticky and more difficult to work with after 30 minutes or in higher temperatures.

Important Instruction

• Remain off the freshly applied areas and protect them from heavy rain for a period of min. 24 hours. Then, the areas can be walked over carefully.
  • In general, a strength test should be carried out before final clearance of the area after 7 days.
• The practice has shown that there are minerals for which the epoxy used can produce special effects such as darkening.
  • Over time, this weathers off, and the mineral substance regains its natural color.
• In covered areas, the weathering process takes longer.
• With bright white minerals, a slightly yellowish color change may occur.
  • Color differences may occur until curing is complete, especially with strongly varying UV radiation.
  • These phenomena result from the contact between Xtreme Gravel Lock epoxy and mineral aggregate and are not a design defect.
• The gloss effect remaining after application will degrade over time from exposure to natural UV light.
• Despite careful processing, marginal detachment of individual grains cannot be ruled out.