Subgrade Stabilization

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SUBGRADE STABILIZATION

By using specialized equipment, H & G Paving Contractors subgrade stabilization teams have completed hundreds of projects involving millions of cubic yard of stabilized soils. While using engineered designs to improve the native soils, we can mix a variety of products including lime, fly ash and cement kiln dust into the soil to provide a strong base for pavement or structure construction. The subgrade under a road or structure is seldom seen by the traveling public, but it is the foundation for sustainable pavements. H & G Paving Contractors commitment to quality pavements starts with our subgrade stabilization team.

Poor base and subgrade soils can wreak havoc on a roadway, causing a variety of issues such as cracking, rutting and severe pavement settlement. The root of the soil degradation could be caused by:

  • Improperly compacted soils under the roadway
  • Water infiltration through pavement cracks causing soil washout
  • Roadway widening that did not address soil conditions for new design
  • Heavier loads than originally design allowed for
  • Failing sewer systems underneath the pavement causing soil loss

In Oklahoma, H&G Paving Contractors offers roadway leveling and stabilization services. We can level, lift and stabilize roadways quickly and cost-effectively, oftentimes saving a great deal of money by eliminating the need to demo the existing roadway and its support soils.

The process levels roadways by injecting a high density structural polymer underneath the roadway through 3/4” holes in the pavement and ½” metal rods that are inserted into the base soils where voids, or loosely compacted soils, are located. The polymers expand throughout the soils and voids, densifying and compacting the areas to adequately support the roadway. This process can be used for:

  • Stabilizing pavement against rutting, cracking and severe settlement
  • Bridge abutment and approach slab lifting and stabilization
  • Mitigating soil loss from inflow and infiltration (I/I) into sewers, manholes and culverts
  • Mechanically Stabilized Earth (MSE) wall stabilization
  • Groundwater control and contamination migration

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