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

3–5×

Increase in compressive strength vs. untreated base

60–80%

Reduction in dust emissions

30+ years

Extended road service life documented in field studies

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 type	Untreated	Treated	Improvement
Modified Proctor Compaction (ASTM D1557)	Clayey gravel (GC)	96.2 pcf MDD / 14.8% OMC	101.4 pcf MDD / 11.2% OMC	5.4% 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 kPa	187 kPa	345% increase in compressive strength
Modified Proctor Compaction (ASTM D1557)	Silty sand (SM)	108.5 pcf MDD / 12.1% OMC	114.2 pcf MDD / 9.4% OMC	5.3% 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% swell	0.6% swell	87.5% 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

Dilution: 1:500 – 1:1,000 (product:water)
Coverage: 500–1,000 m² per litre of concentrate
Notes: Apply during grading; compact to 95% modified Proctor

Dust suppression (unpaved roads)

Dilution: 1:200 – 1:400
Coverage: 200–400 m² per litre of concentrate
Notes: Surface spray; reapply after significant rainfall events

Subgrade improvement

Dilution: 1:750 – 1:1,500
Coverage: 750–1,500 m² per litre of concentrate
Notes: Mix into top 200–300 mm of subgrade before compaction

Agricultural track stabilization

Dilution: 1:600 – 1:1,000
Coverage: 600–1,000 m² 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

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