Why Polyurethane Concrete Lifting is Superior to Mud-Jacking

Why Polyurethane Concrete Lifting is Superior to Mud-Jacking

When it comes to lifting and leveling sunken concrete, two primary methods are commonly considered: polyurethane concrete lifting and mud-jacking. While both techniques aim to achieve similar results, polyurethane concrete lifting has several distinct advantages that make it far superior to mud-jacking.

1. Material Composition and Weight

• Polyurethane Concrete Lifting:
• Utilizes a lightweight polyurethane foam that expands to fill voids and lift the concrete.
• The foam's light weight minimizes additional stress on the underlying soil, reducing the risk of further settling.
• Mud-Jacking:
• Uses a heavy slurry mix of cement, sand, and water, which can add significant weight to the soil beneath the concrete.
• This increased weight can exacerbate soil settlement issues, potentially leading to the need for repeated lifting.

2. Precision and Control

• Polyurethane Concrete Lifting:
• The expanding foam provides precise control over the lifting process, allowing for accurate leveling of the concrete.
• The foam’s expansion can be finely tuned to ensure the concrete is lifted to the desired height without over-correction.
• Mud-Jacking:
• The slurry mixture can be difficult to control with precision, leading to uneven lifting and potential over-lifting.

Achieving the exact level required can be challenging, often requiring additional adjustments.