CASTAIDCEM 801
High-Performance Grinding Aid and Strength Enhancer for Ordinary Portland and Blended Cements
CASTAID CEM 801 is a high-efficiency grinding additive formulated from a combination of chemicals that improve the grinding and strength of cements. It is suitable for use in ball mills and vertical roller mills (VRM).

Overview
About
CASTAID CEM 801 is a high-efficiency grinding additive formulated from a combination of chemicals that improve the grinding and strength of cements. It is suitable for use in ball mills and vertical roller mills (VRM).
Typical uses
CASTAID CEM 801 is recommended for the production of Ordinary Portland Cements (OPC) and blended cements using fly ash, GGBFS and other pozzolanic materials.
Standards
CASTAID CEM 801 meets the requirements of ASTM C465- 85.
Compatibility
CASTAID CEM 801 is compatible with all types of Portland cement and blended cement replacement materials such as GGBS, PFA and limestone, and with all CASTECH range concrete admixtures.
Benefits
Advantages
Key advantages
- Increases concrete slump and mortar flowability; enhances concrete and mortar strength by 12 – 15% at all ages
- Increases mill production by 10 – 20%, depending on equipment efficiency and the material ground
- Allows part replacement of clinker with reactive supplements (fly ash, blast-furnace slag) or non-reactive additives (limestone)
- Reduces grinding energy costs
- Improves physical properties of the ground material
Technical data
| Component | Single |
|---|---|
| Form | Liquid |
| Colour | Dark brown |
| Specific Gravity (ASTM D1475) | 1.09 ± 0.03 |
| Chloride Content (EN 480-10) | < 0.10% |
Typical values. Refer to the TDS for full details and test conditions.
Application
Dosage
Typical dosage rates of CASTAID CEM 801 are between 0.20 – 1.2 kg per tonne of cement (0.02 – 0.12% by weight of cement). Dosage may vary depending on clinker type, type of cement mill, desired mill output and cement performance. The optimum dosage rate should be determined during plant trials and actual plant use to meet the desired requirement.
Application
CASTAID CEM 801 is a ready-to-use liquid additive. Industrial trials are required to determine the optimum dosage. It may be introduced directly into the mill or onto the feed conveyor belt; for continuous processes, incorporate it using a volumetric dosing pump with a regular output.
Enhancer for Ordinary
Packaging & storage
Packaging
CASTAID CEM 801 is available in IBC, 200 kg drums and bulk tanks upon request.
Storage & shelf life
12 months from date of manufacture when stored under warehouse conditions in original unopened packing. Extreme temperature/humidity may reduce shelf life.
Health & safety
Do not mix with other products without advice from the manufacturer. Should the product freeze, some crystals may appear, which will disappear on agitation or when the temperature rises above freezing. PPE: Suitable protective goggles, gloves and mask must be worn. Precautions: In case of contact with eyes, rinse immediately with plenty of water; in case of contact with skin, wash off immediately with soap and water. If swallowed, seek medical attention immediately. Hazard: Regarded as non-hazardous for transportation. Disposal: Do not reuse containers. Dispose of as per local rules and regulations. Additional information: Refer to MSDS (available on request).