EN 197-1 Cement
CEM II/B-LL 32,5 N Portland Limestone Cement
General-purpose limestone cement with reduced clinker factor.
Description
A general-purpose Portland-limestone cement offering excellent workability, smooth finish and a lower clinker factor, ideal for masonry, plastering and general residential construction.
Application Areas
- Masonry, plastering and general construction
- Ready-mix concrete for residential projects
- Renderings and screeds
- Block and paver manufacturing
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 | % | — | 12.00–18.50 |
| Al₂O₃ | % | — | 3.00–6.10 |
| Fe₂O₃ | % | — | 2.20–4.00 |
| CaO | % | — | 55.50–64.20 |
| MgO | % | — | 0.90–3.50 |
| SO₃ | % | Max 3.50 | 1.90–3.45 |
| Cl | % | Max 0.10 | 0.0010–0.0400 |
| Loss on Ignition (LOI) | % | — | 9.00–19.00 |
| Free CaO | % | — | 0.25–2.50 |
| Cr (VI) | ppm | — | 1–40 |
| Na₂O | % | — | 0.01–0.30 |
| K₂O | % | — | 0.25–0.80 |
| Na₂O Eq. | % | — | 0.20–0.75 |
| Total Additives | % | Min 21.0 / Max 35.0 | 21.80–34.95 |
| Lime Saturation Factor (LSF) | – | — | 100.00–160.00 |
| Silica Modulus (SM) | – | — | 1.90–2.80 |
| Alumina Modulus (AM) | – | — | 0.80–2.00 |
Physical & Mechanical Requirements
| Property | Unit | Standard Limit | Test Results |
|---|---|---|---|
| Specific Gravity | g/cm³ | — | 2.85–3.06 |
| Specific Surface (Blaine) | cm²/g | — | 3500–6400 |
| Residue on 0.045 mm | % | — | 1.3–9.0 |
| Residue on 0.090 mm | % | — | 0.0–1.0 |
| Initial Setting Time | min | Min 75 | 100–235 |
| Final Setting Time | min | — | 140–345 |
| Soundness | mm | Max 10.0 | 0.0–6.0 |
| Normal Consistency | % | — | 25.0–31.0 |
Compressive Strength (EN 196-1)
| Property | Unit | Standard Limit | Test Results |
|---|---|---|---|
| 7 Days | MPa | Min 16.0 | 22.0–39.0 |
| 28 Days | MPa | Min 32.5 / Max 52.5 | 33.0–47.0 |