Costar Block 20 is a fast setting, biodegradable admixture for masonry blocks specifically designed for manufacturing of hollow blocks. It provides a more efficient utilization of mixing water thereby enhancing workability, moldability and appearance of the masonry unit. It is compatible with all types of Portland cement.
- Reduced moisture absorption and shrinkage
- Improved workability, finish and appearance
- Improved strength
- Increased production rate thereby saving cost.