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Streetscape System

1. Priming Sub-base

  • Ensure the sub-base is clean, free of dust, debris, and any contaminants.
  • Identify and account for any movement or construction joints that must be carried through to the surface.
  • If the concrete base is dry, pre-soaking may be required.
  • Prepare the priming slurry by mixing it into a thick paste using a paddle drill mixer (5-5.4 litres per bag).
  • Apply a 1-2mm thick layer of the priming slurry evenly across the sub-base.

2. Laying Course-HSBC (High Strength Bedding Concrete)

  • Mix the HSBC to a moist consistency using 2.2-2.5 litres of water, enough to form a “snowball.”
  • Only mix what’s needed to lay pavers while the product remains moist.
  • Lay the HSBC with a sufficient surcharge to achieve the specified compacted bedding depth.
    • For 40mm depth, the initial depth may need to be 10-20mm deeper before compacting with a maul.
  • Pre-soak paving units if necessary.
  • Prime the base of each paving unit with a 1-2mm layer of fresh slurry, either by brushing or dipping.
  • Lay the unit by ramming it into place with a maul, ensuring the correct level and laying depth.
  • For depths over 75mm, apply a layer-by-layer method with priming slurry between layers.
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3. Jointing with Rapid Set Jointing Mortar

  • Ensure the paving and joints are clean before applying the jointing mortar.
  • Wet the paving surface immediately before jointing to prevent staining.
  • Mix 4.25 litres of clean water per 25kg bag of mortar, creating a lump-free slurry. Do not remix or add water later.
  • Pour the mortar onto the pre-wetted surface and brush into joints with a soft brush or squeegee.
  • Fill joints to the surface, allowing for settlement, and remove excess mortar with the squeegee.
  • Lightly spray water as the mortar hardens to assist with cleaning.
  • Once the joints harden (around 15 minutes, depending on temperature), clean the surface with a steady water flow and diagonal sweeping to prevent staining.
  • Use a belt cleaner if needed, and inspect the surface to ensure all excess mortar is removed.
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