Microfine Grout Underpinning Services for Foundations
GFWA is an expert in microfine grout underpinning, with numerous projects in Western Australia.
Microfine Grout Underpinning: Perfect for Heritage building preservation and foundation repairs. This method reinforces and stabilises existing foundations, ideal for maintaining structural integrity.
Our processes
Stage 1: Site Preparation
The site is cleared, and access points for grouting operations are prepared. Any obstacles are removed, and the area around the existing foundation is made accessible for drilling equipment. The site preparation ensures that the area is ready for the arrival of equipment and materials.
Stage 2: Drilling
Small-diameter holes are drilled beneath the existing foundation to be underpinned. The drilling pattern and depth depend on the load distribution and soil conditions. The drilling process must be carefully controlled to ensure proper positioning and depth.
Stage 3: Grout Injection
Microfine grout is injected into the holes to fill voids and strengthen the soil beneath the foundation. Controlled flow and pressure are used to ensure uniform grout distribution. The grouting process must be monitored to ensure proper filling and strength.
Stage 4: Monitoring
The grout injection process is continuously monitored to control flow and pressure. Adjustments are made as needed to achieve optimal grouting results. The monitoring process ensures that the grout is evenly distributed and achieves the required properties.
Stage 5: Curing
The grout is allowed to cure and stabilize the foundation. Proper curing is essential to achieve the desired strength and stability. The curing process is monitored to ensure the grout sets correctly and achieves the required properties.
Stage 6: Finishing
Any surface disruptions caused by the grouting process are repaired. The site is restored to its original condition, ensuring that the underpinning does not adversely affect the appearance or functionality of the existing structure.
Stage 7: Quality Control
Load tests and inspections are conducted to ensure the underpinning has achieved the desired strength and stability. Non-destructive testing methods such as core sampling or integrity testing may be used to assess the quality of the grouting. Ensuring that the underpinning meets all design and safety standards is essential for the success of the project.
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