To cement in pavers, you'll need to create a concrete haunch along the edges to provide stability. Here's how:
Steps to Cement Pavers in Place
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Prepare your materials: You'll need a wheelbarrow, a 20kg bag of concrete mix, approximately 2.5 liters of clean water, a shovel, a trowel, and a wooden float.
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Mix the concrete: In the wheelbarrow, combine the 20kg bag of concrete mix with 2.5 liters of clean water. Use a shovel to thoroughly mix the ingredients until you achieve a workable, thick consistency. The mixture should be moist but not runny.
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Excavate a trench (if necessary): This assumes you already have your pavers laid and leveled on a proper base (crushed stone, compacted sand, etc.). However, to create the concrete haunch, you might need to carefully excavate a small trench alongside the pavers you wish to secure. Be careful not to disturb the pavers themselves.
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Apply the concrete: Using the trowel, carefully place the mixed concrete up against the side of the paver within the trench. Work in manageable sections.
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Shape the concrete haunch: Angle the surface of the concrete about halfway up the side of the paver. This creates a supporting "haunch."
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Smooth the surface: Use the wooden float to smooth the surface of the concrete, ensuring a clean and professional finish. This helps with water runoff and prevents chipping.
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Curing: Allow the concrete to cure properly. Keep it slightly damp for at least 24-48 hours to prevent cracking. You can do this by gently misting it with water periodically.
Important Considerations:
- Proper Base: Cementing pavers is typically a secondary measure. Ensuring a well-compacted base (typically crushed stone and sand) is crucial for long-term stability and prevents shifting and sinking.
- Expansion Joints: Concrete can crack due to temperature changes. If you are cementing a large area, consider using expansion joints to accommodate movement and prevent cracking.
- Drainage: Ensure proper drainage around your pavers to prevent water from pooling and damaging the base or the concrete.
- Safety: Wear appropriate safety gear, including gloves and eye protection, when working with concrete.
