CEM III/A 42,5 N
Description
CEM III/A 42,5 N blast-furnace slag cement is produced in accordance with ČSN EN 197-1 ed. 2. It is a hydraulic binder in powder form manufactured by grinding together:
- Portland clinker (K)
- blast-furnace slag
- calcium sulphate
- additional constituents
- additives
Use
Used for concrete, reinforced concrete building structures, which do not require high early strength and rapid strength development. CEM III/A 42,5 N is suitable for concreate of higher and conventional strenghts classes. This cement is suitable for concreting of massive building facelities and for concreting in summer (warm) season due to the lower hydration heat development. Concrete with blast-furnace cement has an increased resistance to aggressive environments and is less susceptible to efflorescence. The concrete with this cement is associated with continuation of the increase in strenght even after the specified standard of 28 days compared to the constant strenght values of Portland cement. This cement is not suitable for concreting in winter (in the negative outdoor temperatures).