Rated ‘R’ for rapid early strength development, so formwork comes off sooner and the next stage of the build starts earlier.

Sephaku 42R is a type CEM II/A-V 42,5R early strength cement and is manufactured to fully conform to the requirements of strength class 42,5R in accordance with the South African National Standard SANS 50197-1:2013.
Sephaku 42R is rated ‘R’ in terms of early rapid strength development, which makes it ideally suited where faster demoulding or striking/stripping of formwork is beneficial. Portland-fly ash cement concretes, designed for the same strength as Portland cement concrete, will continue to gain additional strength to 90 days and beyond, provided adequate curing is given to the concrete.