Repair Mortar Additive
Repair mortar additives are polymer dispersions or redispersible powders incorporated into cementitious repair mortars to improve adhesion, flexibility, and durability of patched areas on concrete and masonry. They reduce shrinkage and cracking of the repair layer, improve bond strength to the substrate, and provide chemical resistance. These additives enable repair mortars to comply with EN 1504-3 structural and non-structural repair standards for concrete rehabilitation.
Technical Specifications
| pH | 7.0–10.0 |
| glassTg | -10–10 °C |
| appearance | White powder or milky emulsion |
| solidContent | 50–55% (emulsion) or 98% (powder) |
| recommendedDosage | 5–15% on cement weight |
Applications
- Concrete structural repair mortars
- Masonry and render patch repairs
- Spall repair on bridges and parking structures
- Floor and screed repair systems
- Historic masonry restoration
Key Features
- Improves adhesion and bond strength of repair mortar
- Reduces shrinkage cracking in repair layers
- Enhances flexibility and durability
- Compatible with EN 1504-3 repair systems
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