TRTerraRoads™

Performance data

Proven by testing. Validated in the field.

Independent laboratory results and field performance data from road stabilization projects across multiple soil types and climates.

Up to 25%

Reduction in water demand during compaction

Up to 3.5×

Increase in compressive strength vs. untreated base

Up to 95%

Reduction in dust emissions

Up to 4×

Longer service life vs. untreated roads

Laboratory test results

The following data is drawn from independent Proctor compaction, CBR, and unconfined compressive strength tests conducted on treated soil samples across a range of soil classifications.

Test (standard)Soil typeUntreatedTreatedImprovement
Modified Proctor Compaction (ASTM D1557)Clayey gravel (GC)96.2 pcf MDD / 14.8% OMC101.4 pcf MDD / 11.2% OMC5.4% density gain, 24% reduction in optimum moisture
California Bearing Ratio (ASTM D1883)Sandy clay (SC)CBR 4.2%CBR 18.7%345% increase in bearing capacity
Unconfined Compressive Strength (ASTM D2166)Low-plasticity clay (CL)42 kPa187 kPa345% increase in compressive strength
Modified Proctor Compaction (ASTM D1557)Silty sand (SM)108.5 pcf MDD / 12.1% OMC114.2 pcf MDD / 9.4% OMC5.3% density gain, 22% reduction in optimum moisture
California Bearing Ratio (ASTM D1883)Poorly graded gravel (GP)CBR 11.3%CBR 38.6%241% increase in bearing capacity
Swell / Shrink Potential (ASTM D4546)Expansive clay (CH)4.8% swell0.6% swell87.5% reduction in swell potential

Soil compatibility

TerraRoads™ performs across a broad range of USCS soil classifications. The enzyme formulation catalyzes ion exchange reactions that are most pronounced in fine-grained and mixed soils.

GC — Clayey gravelExcellent

High clay fines content maximizes enzyme reaction

SC — Sandy clayExcellent

Strong CBR and density improvements documented

CL — Low-plasticity clayExcellent

Significant strength and moisture reduction

CH — High-plasticity clayVery good

Marked reduction in swell and shrink potential

SM — Silty sandVery good

Density and moisture improvements well documented

ML — Low-plasticity siltGood

Moderate improvement; blending with clay fines recommended

GP — Poorly graded gravelGood

Best results when clay fines ≥ 10%

SP — Poorly graded sandModerate

Requires clay fines amendment for full benefit

Application rates

Dosage is calculated based on soil type, project scale, and target performance. The following are standard starting-point rates; final rates are confirmed after on-site soil analysis.

Road base stabilization

Rate
1 L product per 15 m³ of material
Coverage
15 m³ of material per litre of concentrate
Notes
Apply during grading; compact to 95% modified Proctor

Dust suppression (unpaved roads)

Rate
1:200 – 1:400 (product:water)
Coverage
200–400 m² per litre of concentrate
Notes
Surface spray; reapply after significant rainfall events

Subgrade improvement

Rate
1 L product per 15 m³ of material
Coverage
15 m³ of material per litre of concentrate
Notes
Mix into top 200–300 mm of subgrade before compaction

Agricultural track stabilization

Rate
1 L product per 15 m³ of material
Coverage
15 m³ of material per litre of concentrate
Notes
Ideal for high-traffic farm access roads

Safety and environmental profile

Toxicity
Non-toxic to humans, animals, and aquatic life at recommended application rates
Biodegradability
Fully biodegradable; no persistent residues in treated soil
pH
Neutral (6.8–7.2); non-caustic, non-corrosive
Regulatory status
Compliant with EPA guidelines for soil amendment products
Handling
No PPE required beyond standard site precautions; safe for handling without specialist equipment
Storage
Stable at ambient temperature; 10+ years shelf life in sealed container

Need site-specific data?

Our technical team can review your soil reports and provide application recommendations tailored to your project.

Talk to a technical expert