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Unstable soil can be defined as soil that will not stay in place on its own, and therefore requires extra support. It should be noted that unstable soil can threaten the stability, security, and safety of infrastructure and can damage, degrade, and even destroy a number of structures, such as buildings, bridges, and roads. There are a variety of factors that can cause unstable soil including erosion, poor compaction, freeze/thaw cycles and decomposition.
1. Complete a thorough site evaluation
2. Create a grouting plan and an appropriate grid pattern
3. Lay out the grid pattern and drive in the injection pipes
4. Determine an injection point sequence, based on conditions
5. Inject the resin into each point at the correct pressure and volume
6. Extract pipes, seal drill holes and clean up the site
Bridge Approach Slabs
• Sinkhole Remediation
• Loose Sand/Soil
Crack Metres Repaired
Wall Ties Replaced
What Causes Unstable Soil?
Poor drainage, improperly placed downspouts, leaking drain pipes, and broken water lines are common culprits.
- Poor Compaction
When backfilling on a jobsite, the contractor is supposed to compact the backfill by driving over it with heavy equipment. However, this isn’t always done properly for one reason or another.
Processes of freezing and thawing essentially accelerate erosion processes. Cold weather freezes moisture trapped in tiny cracks. When this water freezes, it expands, subsequently pushing on the rocks and breaking them into smaller pieces. As processes of freezing and thawing continue, rock and sediment are continually broken down.
- Biological Decay
Construction trash pits, buried trees, and other biodegradable materials all break down. Sometimes structures are built over these areas.
How Does Polymer Foam Help?
- Reinforcing Eroded Areas
Polymer foam displaces water and cures into a solid mass reversing the erosion process.
- Permeating Soil
AP Soil 600 foam permeates loose soil to create a strong substrate.
- Filling Voids Caused by Decay
Polymer foam fills voids before it cures, making it a great solution for instances of biological decay.
Why Are AP Soil 600, AP Lift 430 & AP Lift 475 Safe for the Environment?
AP Soil 600, AP Lift 430 and AP Lift 475 are approved for contact with drinking water (certified to NSF 61-5). That means they can be used anywhere without having an adverse effect on water quality. Having our core products rigorously tested for environmental compatibility is a key component of our committment to assuring “painless procedures” for customers.
wHAT ARE THE RESULTS?
Lasting soil stabilization. Alchemy-Spetec structural foams are stronger than crystalline bedrock.
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0300 030 1822
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