Soil Stabilization

Settlement is often attributed to inadequate fill material such as frozen fill or improper base compaction.

Other causes contributing to a weak base soils condition also include:

  • Drying out of the ground surface layers (desiccation).
  • Reduction in water table level.
  • Wash-out caused by leaking water pipes, sewers and drains.
  • Excavations adjacent to buildings.
  • Inadequate foundation design.
  • Vibrations caused by heavy road traffic or adjacent construction sites.
  • Base soils with different geological strata.

 

Whatever the cause for subsidence in the building floor slab or foundation, the base soils will require densification to enhance their load-bearing capacity to bear the loading of the building structure.

Poly-Mor strongly advises that a third party engineering firm be involved to undertake and provide the appropriate soils testing and analysis of the “Before” and “After” Standard Penetration Tests. In most cases Poly-Mor would recommend that a field test firstly be undertaken prior to any large scale treatment being undertaken

Commercial

Soil Stabilization

Before occupying or introducing equipment to an area, it is important to take into consideration the strength of the soil underneath. Poly-Mor Canada Inc. uses a two-part polymer material injected through injection probes drilled in the base soils. The resulting mixture polymerizes and expands within the base soils. With this expansion, the material aggressively seeks out voids filling them while densifying surrounding soils and increasing the bearing capacity of the base soils significantly. This unique process relies on the expansive properties of a two-part expanding resin system, with an expansion co-efficient of thirty to one, and a quick 15 minute cure time.

Poly-Mor also is capable of multi-layered injection process. Resin is filled at varying depths to fill all voids and densify the soil. Typically the load bearing capacity can be more than doubled and will be sufficient to load over and above the desired requirements. 

Applications

Industrial

Soil Stabilization

Poly-Mor uses a form of “chemical compaction grouting” where a special high density, hydro-insensitive expanding polymer resin is used to fill, densify and stabilize low density, compressible soils to depths of 30 feet and beyond. The Poly-Mor resins are delivered and placed at the appropriate depths in the required soils strata via drilled or driven injection probes . As the resin is injected, it expands and provides a compaction or lift force of up to 50 tons per square meter thereby filling, compressing and compacting adjacent soils and significantly increasing the load bearing capacity of the base soils resting under a structure. Our soils densification process is also excellent for conglomerating and binding non-cohesive soils.

Key Benefits

If you are challenged by a poorly compacted sub-grade, weak base soils strata at depth or require agglomeration of base soils such as blast rock, etc. Poly-Mor technology can help!

Infrastructure

Soil Stabilization
Culvert Rehabilitation
Soil Stabilization

Culvert Rehabilitation

The response of culverts or tunnels to static loads is controlled by soil arching and the imperative need to ensure the relative stiffness between the culvert and surrounding soil is maintained. Failure of corrugated pipes and even concrete pipes with applied external loads is typically by unconstrained buckling of the pipe. Placement of a structural fill that is continuous and contiguous around the pipe, significantly enhances the pipe strength and minimizes / eliminates buckling possibility. The use of expanding polymer grouting systems is significantly more effective then using cementitious grouts.

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Soil Stabilization

The parameters of this treatment technique make it suited to a large range of cohesive soils including a wide range of clays up to 44% plasticity index. We are unable to treat clays, silts or other fine soils with large volumetric changes where thrust from the clay exceeds the dead load of the building or foundation weight or where the soils are so heavily compacted that our resins cannot permeate same. Also, in very weak alluvial soils such as peat, hog fuel, saturated silts and other weak sediments direct injection into same will densify the weak soils but an inordinate amount of expanding resin would be required and thus make the process uneconomical. Further, and in all cases, injection at depth is done blindly and there is no telling exactly where the expanding resin is traveling to. Before and After Standard Penetration Tests (SPT) are the only way to determine if the base soils have been densified sufficiently to accomplish the desired load bearing requirements.

Poly-Mor

This technology is applicable in the industrial, commercial, residential, public works and institutional markets where soils stabilization is required.

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