ASTM C150 Cement
Portland Cement Type I/II Low Alkali (ASTM C150)
Moderate sulfate resistance; C₃A ≤ 5%; meets low-alkali requirement.
Description
An ASTM C150 dual-classified Portland cement providing moderate sulfate resistance, low alkali content and moderate heat of hydration, well-suited for structures exposed to seawater spray or sulfate-bearing soils.
Application Areas
- Bridges, piers and seawater-adjacent structures
- Foundations in sulfate-bearing soils
- Mass concrete with moderate heat control
- General reinforced concrete works
Sales Form / Packaging
- 25–50 kg bags
- 1.5 t sling bag
- 1.5–2 t stretch hood
- 1.5 t big bag
- Bulk vessel / silo truck
Usage Conditions
- Use within 90 days of production date for optimal performance.
- Mix with potable water and clean aggregates conforming to EN 12620 / ASTM C33.
- Do not use cement that has hardened or formed lumps.
Storage
- Store in a dry, covered area protected from moisture and direct sunlight.
- Stack bags on wooden pallets, no more than 10 bags high.
- Rotate stock on a first-in, first-out basis.
Technical Specifications
Chemical Requirements
| Property | Unit | Standard Limit | Test Results |
|---|---|---|---|
| SiO₂ | % | — | 18.00–21.10 |
| Al₂O₃ | % | — | 3.50–5.15 |
| Fe₂O₃ | % | — | 3.70–5.90 |
| CaO | % | — | 61.20–65.40 |
| MgO | % | Max 6.0 | 1.00–3.70 |
| SO₃ | % | Max 2.3 | 1.80–2.30 |
| Cl | % | — | 0.0010–0.0400 |
| Loss on Ignition (LOI) | % | Max 3.5 | 1.10–3.30 |
| Insoluble Residue | % | Max 1.50 | 0.10–1.10 |
| Free CaO | % | — | 0.25–3.00 |
| Na₂O | % | — | 0.02–0.25 |
| K₂O | % | — | 0.30–0.80 |
| Na₂O Eq. | % | Max 0.60 | 0.25–0.60 |
| Lime Saturation Factor (LSF) | – | — | 95.00–104.50 |
| Silica Modulus (SM) | – | — | 1.90–2.50 |
| Alumina Modulus (AM) | – | — | 0.65–1.40 |
| Tricalcium Aluminate (C₃A) | % | Max 5.0 | 1.00–4.95 |
Physical & Mechanical Requirements
| Property | Unit | Standard Limit | Test Results |
|---|---|---|---|
| Specific Gravity (ASTM C188) | g/cm³ | — | 3.09–3.22 |
| Specific Surface (ASTM C204) | m²/kg | Min 260 | 310–450 |
| Air Content (ASTM C185) | % | Max 12.0 | 4.0–11.9 |
| False Set (ASTM C451) | % | Min 50 | 60–97 |
| Autoclave Expansion (ASTM C151) | % | Max 0.8 | 0.0–0.5 |
| Initial Setting Time (ASTM C191) | min | Min 45 / Max 375 | 140–260 |
| Final Setting Time (ASTM C191) | min | — | 185–320 |
Compressive Strength (ASTM C109/109M)
| Property | Unit | Standard Limit | Test Results |
|---|---|---|---|
| 3 Days | psi | Min 1160 | 2700–4100 |
| 7 Days | psi | Min 2180 | 3350–5100 |
| 28 Days | psi | Min 3050 | 4650–6650 |