Do I need a maturity calibration for every concrete mix design?
Yes. A calibration is only valid for each unique concrete mix, as the strength development changes depending on the mix design.
Yes. A calibration is only valid for each unique concrete mix, as the strength development changes depending on the mix design.
Do I need a new maturity calibration if I change one of my suppliers
It depends. You should at least validate your maturity calibration as described above. If the difference is more than 10%, you should perform a recalibration.
It depends. You should at least validate your maturity calibration as described above. If the difference is more than 10%, you should perform a recalibration.
Do I need a new maturity calibration if I add admixtures?
Most likely. Many admixtures change the properties and strength development of your concrete mix and you must ensure that your maturity calibration is accurate.
Most likely. Many admixtures change the properties and strength development of your concrete mix and you must ensure that your maturity calibration is accurate.