Borregaard's cellulose fibrils product Exilva® can be used in shotcrete as a sustainable additive for mix design stability, improved sprayability, ease of application, and reduced rebound.
Sustainable rheology modifier for shotcrete
Benefits offered:
- Improved workability
- Enhanced cohesion
- Increased applicability
- Reduced rebound
- Sustainable/Environmentally friendly
Improved workability
The cellulose fibril network interacts with all components of the shotcrete mix design reducing water loss and maintaining a more consistent and homogeneous material during mixing and application.
Enhanced cohesion
Along with the workability, Exilva also provides shotcrete with a more uniform mix design reducing segregation and bleeding. This will allow the shotcrete to maintain its integrity during pumping/spraying.
Increased applicability
Exilva has a natural shear-thinning effect in cementitious mix designs, and this allows the pumping and spraying of the shotcrete to be easily carried out during application. This improved application reduces the energy demand of the spray machines as well as the need for spray enhancing admixtures.
Reduced rebound
The cellulose fibrils network of Exilva works as a natural viscosity modifier, increasing the stability of the shotcrete and reducing loss of material from the applied surface during application/spraying. The network interacts physically with the components of the shotcrete making it more resistant to the external stresses of vibration and impact, in turn reducing rebound.
Sustainable/Environmentally friendly
Exilva is a sustainable alternative that will help reduce the CO2 footprint of shotcrete mix designs, providing a more climate friendly concrete for the end user.
