Typical Application
A multi-level concrete building is under design and its construction is to be controlled with the M-Meter™ to meet performance specifications.

Laboratory tests indicate that the concrete specified is of satisfactory quality. The maturity vs. strength relationship obtained during the lab tests is shown in the figure below.

To allow for unanticipated variations in the concrete properties, the contractor has decided that he will remove the forms when the concrete strength is at least 5% greater than the required 3500 psi, i.e., when the strength is 3675 psi. The figure below shows that this strength level will be reached when the maturity is 3600°C-Hr.

The M-Meter™ probes, therefore, should be inserted in the freshly placed concrete at critical locations and maturity values monitored. When the lowest maturity value reaches 3600°C-Hr, the forms can be removed.