Shrinkage Reducing Admixture (Propylene Glycol SRA)
CAS Number: 57-55-6
Propylene glycol-based shrinkage reducing admixture (SRA) reduces the surface tension of pore water in concrete, significantly decreasing drying shrinkage and the associated cracking risk. It can reduce drying shrinkage by 25–50% depending on dosage and mix design, extending service life of floors, slabs, and bridge decks. The product is chloride-free and compatible with all standard concrete admixtures.
Technical Specifications
| pH | 6.0-8.0 |
| appearance | Clear colorless to slightly hazy liquid |
| specific gravity | 1.03–1.05 |
| solid content (%) | 98±2 |
| chloride content (%) | ≤0.1 |
Applications
- Industrial concrete floors and warehouse slabs
- Bridge decks and parking structure slabs
- Post-tensioned concrete slabs prone to cracking
- Concrete with large surface-to-volume ratio
- High-performance concrete for infrastructure
Key Features
- Reduces drying shrinkage by 25–50% to minimize cracking
- Improves long-term durability and service life of concrete structures
- Chloride-free formula safe for reinforced and post-tensioned concrete
- Compatible with PCE superplasticizers and other standard admixtures
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