Sikament® R-7 N
A concrete plasticizer and retarder based on modified lignosulfonates used to produce good quality concrete.
Complies with ASTM C494 Type D.
- Only set retarding, does not delay the hardening process;
- Allow cement reduction compared to plain concrete;
- Increase in ultimate strength;
- Good control of slump loss even at elevated ambient temperature;
- Reduced shrinkage and creep;
- Chloride free, does not attack reinforcement steel.