Lime Slurry-Target Distribution Center
Dry Lime-Building Pad Dry Up
Cement-Palo Verde Water Storage Pond
Lime Slurry-Riverside Industrial Park
Cement-Goodyear Airport
Cement-Maricopa County Roads
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Stabilization of Sub-Base Soil
Soil stabilization is the process of preparing sub-base soils to
provide a higher load bearing capacity so they can better withstand
heavy traffic stresses. Stabilization involves pulverizing and mixing
the soil thoroughly with binders, so that after proper compaction and
curing the soil is more dense (stable) and provides the stronger base
desired.
Proper stabilization of the sub-base soil, followed by appropriate
compaction, is a major contribution to the integrity and longevity of
the finished product.
Stability and load bearing capacity of a soil layer depends on two
factors—the internal friction and cohesion of soil particles. The
higher the internal friction, the better the cohesion, the better the
load bearing capability of the soil layer. Internal friction is
influenced by particle shape, particle size (gradation) and compaction.
Cohesion depends on the soil type; i.e. clay, sand, muck, etc. If the
friction is too low, or cohesion inadequate, traffic will deform the
soil layer which, in turn, affects the finished project. Substandard
friction and/or cohesion of the soil must, therefore be improved. This
is accomplished by adding a chemical binder to the soil to cause the
particles to meet the desired properties of friction and cohesion.
The advantages of soil stabilization with binders are:
- Allows the use of otherwise unsuitable in-place soils.
- Eliminates the need and expense of excavating and removing unsuitable soils, since no soil exchange is necessary.
- Eliminates the cost of transporting and placing new, more costly materials at the job site.
- Reduces cost by the “mixing in place” process.
- Reduces overall construction time, thereby enabling parking lots, roads and job sites to be open to traffic more quickly.
The following is a list of some of the binders that Asphalt Busters has had experience working with:
- Cement
- Lime—dry and slurry
- Flyash
- Bituminous Binders
- Liquid non-traditional stabilizers
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