VPI – Volcanic Pozzolan Iceland
Natural pozzolana from Iceland for sustainable concrete production
VPI is a natural pozzolana manufactured in Degerhamn for use as a Type II addition in concrete in accordance with SS-EN 206 and SS 137003:2021+T2:2025. VPI is a type-approved product that meets the requirements of SS 137004:2024.
The use of VPI in combination with cement
According to SS 137003:2021+T2:2025, the efficiency factor k for calculating equivalent w/c ratio shall be no more than 0.5 for pozzolana when used with CEM I or CEM II/A, CEM II/B or CEM IV/A.
| Cement product | Maximum proportion1 of VPI that may be included in equivalent w/c ratio in the exposure class | |
|---|---|---|
| XC1-XC4, XS1-XS3, XD1-XD3, XF1 and XA1 | XF2, XF3 and XF4 | |
| Bascement Slite | 20% | 19% |
| Byggcement Skövde | 20% | 19% |
| Bascement Plus Slite | 17% | 4% |
| Byggcement Plus Skövde | 17% | 4% |
| Industricement Slite | 20% | 20% |
| Industricement Skövde | 20% | 20% |
| Anläggningscement FA Slite | 20% | 19% |
| 1) Mass fraction of binder content (cement + additions) | ||
Furthermore, it is specified that an increased k-value may be applied when adding a specific pozzolana to a specific cement. An increased k-value may be determined by testing. To date, no such testing has been carried out for binders containing VPI. However, such testing is planned for 2026.
Advantages of VPI
- Natural and stable raw material
- Contributes to the strength of concrete
- Reduces climate impact through cement substitution
Why choose VPI?
- Reduce climate impact – By replacing some of the traditional cement with VPI, you can lower CO₂ emissions in your concrete production.
- High and consistent quality – VPI is extracted from two quarries of comparable quality, Lambafell and Litla Sandfell, and undergoes thorough quality control and processing.
- Natural and sustainable – A geologically stable material that contributes to long-term sustainability in construction projects.
Quarrying and production
VPI is extracted from two quarries in Iceland with consistent and high quality: Lambafell and Litla Sandfell. After extraction, the material is screened to ensure a homogeneous product, after which it is transported by vessels to Sweden for further processing.
Processing
In Sweden, VPI undergoes two stages: drying and grinding. The finished product has pozzolanic properties and can be used in used together with ordinary cement. This contributes to strength development and enables climate improvement by partially replacing traditional cement with VPI.
Would you like to know how VPI can be integrated into your production and contribute to your climate goals?
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- Quick facts
- VPI is a natural pozzolana extracted in Iceland. The material consists of the rock type hyaloclastite, which is formed during volcanic eruptions beneath glaciers – so-called subglacial eruptions. Thanks to Iceland’s geological history, hyaloclastite is a stable and well-known rock type with excellent properties for use as a construction product.