Quelles sont les techniques pour réparer un mur en maçonnerie affecté par le soulèvement du sol? (Guide 2024)
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What are the techniques for repairing a masonry wall affected by soil uplift? (2024 Guide)

Repair Techniques for Masonry Walls Affected by Soil Uplift


Masonry, an ancient craft, lies at the heart of many buildings in Montreal, Laval, Longueuil, and the South and North Shores. However, these robust structures are not immune to natural hazards, such as soil uplift. This issue can severely affect the integrity of masonry walls. Let's explore effective techniques to address this.

Understanding Soil Uplift

Soil uplift is a phenomenon where the ground beneath the foundations moves, typically due to variations in moisture and temperature. This movement can cause cracks or significant structural damage to masonry walls.

Contributing Factors

  • Climate Changes: Freeze-thaw cycles are common in Montreal and its surroundings, causing soil movements.
  • Inadequate Drainage: Poor surface water management can increase hydraulic pressure on foundations.
  • Soil Composition: Some soils are more prone to swelling or contraction.

Accurate Diagnosis

Before any intervention, an accurate diagnosis is essential. This often involves a detailed inspection by a masonry expert. They will assess the extent of the damage and the underlying cause of the uplift.

Repair Techniques

Crack Repair

  • Epoxy resin injection or hydraulic mortar: For minor cracks, these materials offer a durable and resistant solution.
  • Anchor tie installation: For more significant cracks, ties can be installed to stabilize and support the wall.

Structural Reinforcement

  • Reinforcement beams: Installed inside the walls, they provide additional support.
  • Micro-pile network: This method involves installing piles under the foundations to redistribute the building's weight and counteract soil movements.

Drainage Improvement

  • Perimeter drainage systems: These systems help to divert water away from the foundations, thus reducing hydraulic pressure.
  • Landscaping correction: Ensuring adequate slope to keep water away from the foundations.

Prevention and Maintenance

Prevention Tips

  • Regular checks of drains and gutters: To avoid water accumulation near foundations.
  • Monitoring of cracks: Periodic tracking can prevent problems before they worsen.

Annual Maintenance

  • Cleaning of masonry joints: To prevent water infiltration.
  • Sealant application: Protects masonry from weather conditions.


Soil uplift can pose a significant challenge for masonry, but with the right techniques and regular maintenance, it is possible to preserve the integrity and beauty of these structures for years to come. At Maçonnerie Montréal, we are committed to offering expert and durable solutions for all your masonry needs, whether in Montreal, Laval, Longueuil, or elsewhere on the South and North Shores.

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