Strength cusum target types
115
Figure 4.16 Cement margins record selection screen.
the operator quickly notice areas where either a saving of cement can be made, or an increase of cement is required to reduce the risk of rejection. It serves two purposes: ● ●
To fine tune cement contents for maximum economy. To serve as an initial alert on problems requiring investigation.
The program separates QC Test data into groups with the same; ● ● ● ●
● ●
Month Product Code (Mix) Plant Cement Group (A different group is automatically set up for every combination of cementitious materials, when processing batch data) Aggregate source group Admixture may be included later.
The screen display (Fig. 4.17) and the basic printout are in order of the MPa deviation from target. This therefore highlights, at opposite ends of the list,