When is this schedule used?
- In cases where the mix does not have extreme early strength gains (pre-24hrs).
- Where construction application does not require actions to take place at low values of strength.
- Or where additional lab costs due to lab staying open overnight are prohibitive. Or where lab does not have the capability to stay open overnight.
How many samples are required?
18 samples (including 2 instrumented samples which should not be crushed)