The CAPO Test method offers greater flexibility for conducting the in-situ concrete test on the hardened concrete of existing structures.

The historic façade houses an in-situ concrete structure—a building-within-a-building—where the concrete architecture is transparently expressed and explicitly exposed.

The present invention discloses a pre-cast wall panel (4, 16, 18) with longitudinal recess (1) to retain all leakage of cement slur (14) arising from casting of in-situ concrete.

Some of the test cylinders will be cured at ambient conditions at the work site to determine how fast the in-situ concrete is curing.

As a result, there has been a great effort to develop economical non-destructive testing (NDT) techniques to assess in-situ concrete strength over the last 40 years.