BULK CEM I (RAPID HARDENING)
CEM I I.S. EN 197-1:2011
Rapid Hardening Portland Cement (CEM I 42.5R) is a high-performance cement designed to achieve faster early strength compared to Normal Cement. Available in both bulk and bags, it is ideal where early strength development is required.
The product complies with I.S. EN 197-1, is independently certified by the National Standards Authority of Ireland and is CE marked.
Where it's used
Suitable for applications where early strength development is important, including precast concrete production, concrete masonry, urgent repair works and cold weather concreting, providing reliable performance where faster strength gain is required.
Product Data
- Type: CEM I 42.5R (Rapid Hardening Portland Cement)
- Standard: I.S. EN 197-1 compliant
- Setting Time: Typically exceeds 75 minutes
- Strength:
- Early strength: 28–35 MPa at 2 days
- 28-day strength: 50–60 MPa
- Designed for improved early strength performance and durability
Safety Guidance
- Avoid contact with skin and eyes
- Wear suitable protective clothing
- In case of contact, rinse immediately with plenty of water
- Keep out of reach of children
A full safety data sheet is available for download below.
Test Certificates
Routine product test data covering key physical and chemical properties is available on request.
Quality Assurance & Certifications
- CE marked in line with EU requirements
- Certified by the National Standards Authority of Ireland (NSAI)
- Manufactured under ISO 9001 (Quality) and ISO 14001 (Environmental) systems
- BES 6001 certified for responsible sourcing
How To Store
- Store in dry conditions to maintain quality
- Protect from moisture and humidity
- Bulk cement stored in well-maintained silos can be kept for several months
Advice & Information
Irish Cement provides technical support and guidance on cement and concrete applications. Support is delivered by our experienced technical marketing team who are available to assist with specification and use.
Sustainability
Manufactured in modern, energy-efficient facilities with a focus on responsible sourcing and environmental management.
Technical Downloads
Bulk Cement
Declaration of Performance (DoP)
- Declaration of Performance (DoP) Limerick Bulk CEM II
- Declaration of Performance (DoP) Platin Bulk CEM II
- Declaration of Performance (DoP) Limerick Bulk CEM I
- Declaration of Performance (DoP) Platin Bulk CEM I
Certificate of Constancy of Performance (CE Mark)
- Certificate of Constancy of Performance Limerick Bulk CEM I
- Certificate of Constancy of Performance Platin Bulk CEM I
- Certificate of Constancy of Performance Limerick Bulk CEM II
- Certificate of Constancy of Performance Platin Bulk CEM II