How it Works

GEOMAX uses a geotechnically engineered subgrade treatment that alters the chemical composition of the soil particles. It can turn wet, muddy or otherwise unsuitable subgrade into dry, stable, ready-to-pave subgrade within 24 hours.  Three to four hours after application, the mixture is hard – and it continues to gain strength for 28 days.

The GEOMAX soil stabilization process blends Class C self-cementing fly ash (a coal combustion by-product), kiln dust, quicklime or cement powder into the soil to bond soil particles. Fly ash can be used as a drying agent for saturated soils because it helps reduce the moisture content and allows for compaction – resulting in a more stable base. The fly ash reduces the plasticity characteristics of the soil and cements the soil particles together, which reduces the swelling of expansive soils.

Fly ash contains tricalcium aluminate, which is very reactive with water. It provides immediate strength gains to the soil. The modified soil can be used in the remediation of a subgrade or is especially useful in backfilling utility trenches where proper density can’t be attained.

The dirt on soil stabilization: You can save time and money.

The experts at GEOMAX Soil Stabilization can give your ACC or PCC paving project a longer life expectancy and superior quality. Isn’t that what our industry is always looking for?

Soil Stabilizers of Iowa can provide a stabilized subgrade for projects with poor soils and fatty clays including those delayed due to wet conditions.Removing Top SoilDozer pulls trucks through wet subgrade conditions providing consistent distribution of fly ash per square yard.It is necessary to provide an even and consistent distribution of the stabilization product.Tilling of subgrade to a uniform depth.Multiple passes to obtain soil uniformityVerification of tillage depth meeting design specifications.Subgrade prior to fly ash placement. After tilling and prior to compaction.First pass over tilled subgrade with vibratory padded drum roller after initial leveling.Multiple passes with vibratory padded drum roller immediately following tillage without delay to maximize strength of soil-fly ash mixture.Surface appearance after final pass with padded drum roller.Nuclear Density Gauge is utilized to establish the percentage of compaction.Establish finish grade after compaction within two hours.First pass with motor grader utilizing GPS grade control providing final grade profileFinal Grade ProfileMultiple Pass GradingPad marks are removed by final grade profiling allowing for a smooth surface.Motorgrader with GPS provides finished subgrade profile and blue topping.A smooth drum roller is utilized to finish the subgrade and provide a sealed surface.Finished grade profiling creates blue topping of subgrade.Final proofroll using a loaded tandem axle dump truck after subgrade has cured.Complete stabilized base exceeding project minimum compaction specifications.