A Definition of Stabilization:
"Stabilization is the permanent physical and chemical alteration of soils and aggregates to enhance their engineering properties thus improving the load bearing capacity of a sub-grade or sub-base to support pavements and foundations."
-Asphalt Recycling & Reclaiming Association
The Benefits of Soil Stabilization:
A PRO-ACTIVE SOLUTION:
- Addresses underperforming sub-grades prior to construction rather than reacting to the problem afterwards with costly repairs to pavements, building slabs, and foundations.
- Improved resistance to frost penetration in sub-grade.
IMPROVED PROJECT SCHEDULE:
- Allows for immediate access to sites that otherwise might not be accessible due to poor sub-grade conditions.
CONSERVES ENERGY:
- In-place process means no hauling away or importing of new engineered material.
CONSERVES MATERIAL:
- Recycling existing materials saves natural resources and energy.
COST EFFECTIVE:
- Existing materials stay on site eliminating unnecessary trucking and disposal costs.
- Increased load bearing capacity means reduced need for over designed footings, slabs and pavement sections.
ENVIRONMENTALLY FRIENDLY:
- Eliminates material disposal concerns.
- Pollution resulting from material hauling is practically eliminated.
The Soil Stabilization Process:
STEP 1: TESTING
Lab tests analyze the aggregate and soil selected for the project and a custom combination of depth, additive and water is designed to meet the load-bearing capacity required for the use of the site.
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STEP 2: SPREAD/MIXING
In most cases, the soil and aggregates are pre-existing on site and the proper quantity of additive is applied onto the surface with a calibrated spreader. Then, in one step, a reclaimer/stabilizer blends the soil/aggregates, additive and the optimum amount of water to the required depth.
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STEP 3: COMPACTION/CURING
The blended mixture is then compacted using vibratory rollers. Once hardened, the modified material does not compact further under traffic and is resistant to settling. This results in a ready-to-use, durable, subgrade or base.
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STEP 4: CONSTRUCTION
The entire stabilization process can be completed over large areas in one day. From there, further construction operations can then continue on top of the improved surface.
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