Products & Applications

Rare earth pozzolan and fly ash alternative

Environmental Minerals Inc. supplies a vertically integrated suite of industrial minerals serving U.S. infrastructure, concrete, and durability‑critical construction. Our flagship offering is natural pozzolan – a high‑performance concrete additive that exceeds ASTM standards and supports sustainable concrete solutions.

Natural Pozzolan – High-Performance Concrete Additive

Natural pozzolan is a volcanic mineral additive that enhances concrete durability, reduces environmental impact, and improves long‑term structural performance across critical infrastructure applications.

Chemical Composition Analysis

Independent testing reports a combined SiO₂ + Al₂O₃ + Fe₂O₃ content of 86.35%, exceeding the ASTM C618 minimum requirement of 70% by more than 16 percentage points.

Physical Analysis Results (Portland‑Cement Blends)

• Strength Activity Index @ 7 days: 87% of control (ASTM minimum 75%).
• Strength Activity Index @ 28 days: 100% of control (ASTM minimum 75%).
• Water requirement: 99% of control (ASTM maximum 115%).
• Autoclave expansion: ‑0.03% (ASTM maximum 0.8%).

Concrete Performance Advantages

• Higher long‑term compressive strength – cures and hardens with moisture and time.
• Reduced permeability – denser concrete matrix limits water ingress and steel corrosion.
• Superior chemical resistance, including protection against sulfate attack and alkali–silica reaction.
• Thermal control – reduces heat of hydration by approximately 10–40%, helping prevent thermal cracking in mass concrete.

Applications

• High‑performance concrete for bridges, dams, and marine structures.
• Mass‑concrete foundations and infrastructure requiring careful thermal control.
• Agricultural enhancement in tailored formulations – improves soil pH balance and nutrient retention.
• Environmental remediation, including oil‑spill cleanup and toxic‑waste containment.

Environmental Leadership

• CO₂ reduction of approximately 15–20% versus Portland‑cement / fly‑ash mixes.
• Extended structural lifespan, reducing replacement needs and waste.
• Clean production with no toxic waste or chemical processing.
• 100% U.S.‑sourced mineral reserves, supporting domestic supply security.

AGRI‑POZZ™ – Soil Health & Water‑Retention Mineral Amendment

AGRI‑POZZ™ applies the same volcanic‑ash mineralogy to agriculture, land management, and water‑efficiency applications. Finely milled mineral particles support soil structure, increase water‑holding capacity, and help sustain productivity in arid and semi‑arid environments.

Vertically Integrated Basalt Products

In addition to pozzolan, EMI controls basaltic rock resources at the same mining complex, supporting basalt FRP rebar, aggregates, fibres, and insulation for durability‑critical infrastructure and industrial applications.

Downloads & Technical Documents

• CEME'T‑POZZ™ Product Sheet (PDF)
• Natural Pozzolan – Rare Earth Cut Sheet (PDF)
• Independent Natural Pozzolan Strength Test Report (PDF)