Systems and methods for determining concrete strength

A concrete strength testing system comprising:

• a core drill including a core barrel;
• a press associated with the core drill that is configured to drive the core barrel into concrete to be tested;
• a force sensor associated with the core drill that is configured to measure a force with which the core barrel is driven into the concrete by the press;
• a depth measurement device configured to measure a depth into the concrete to which the core barrel is driven by the press;
• a pressure sensor configured to measure a pressure of a fluid used to remove cuttings from the core barrel that are produced while drilling the concrete;
• a rotational speed measurement device configured to measure the rotational speed of the core barrel;
• a current sensor configured to measure an electrical current of the core drill;
• a voltage sensor configured to measure an electrical voltage of the core drill;
• a phase angle measurement device configured to measure an electrical phase angle of the core drill;
• and
• a computing device configured to:
• receive a force measurement from the force sensor, a rotational speed measurement from the rotational speed measurement device, a current measurement from the current sensor, a voltage measurement from the voltage sensor, a phase angle measurement from the phase angle measurement device, a pressure measurement from the pressure sensor, and a depth measurement from the depth measurement device;
• and
• calculate a concrete strength based upon the force, rotational speed, current, voltage, phase angle, pressure, and the depth measurements.