Sephaku 42 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 SANS 50197-1:2013.
Sephaku 42 is rated ‘R’ in terms of early strength development which makes it ideally suited where faster demoulding or striking/ stripping of formwork is bene cial.
Portland- y ash cement concretes, designed for the same strength as Portland cement concrete, will continue to gain additional strength to 90 days, provided adequate curing is given to the concrete.
Guideline proportions in the tables below allow for a nominal 5-10% wastage.
1 wheelbarrow load of cement in volume = 2 x 50 kg bags.
PER m2
HIGH STRENGTH CONCRETE
Improved water tightness, columns, slabs and heavy-duty industrial floors.
25 - 30 MPa
MEDIUM STRENGTH CONCRETE
Paths, driveways and light-duty floors.
20 - 25 MPa
LOW STRENGTH CONCRETE
Foundations, footings, ‘home’ concrete, e.g. domestic flooring, steps, paths and fencing.
10 - 15 MPa
MORTAR (GENERAL PURPOSE)
Bricklaying and plastering.
DRY, LEAN MIXES
Brick and block manufacture.