US 12,265,064 B2
Systems and methods for determining concrete strength
Austin Gray Mullins, Bradenton, FL (US); Sarah Jo Mobley, Tampa, FL (US); and Kelly Marie Costello, Boca Raton, FL (US)
Assigned to UNIVERSITY OF SOUTH FLORIDA, Tampa, FL (US)
Filed by University of South Florida, Tampa, FL (US)
Filed on Mar. 8, 2022, as Appl. No. 17/689,796.
Application 17/689,796 is a continuation of application No. 16/226,593, filed on Dec. 19, 2018, granted, now 11,268,888.
Claims priority of provisional application 62/607,559, filed on Dec. 19, 2017.
Prior Publication US 2022/0260466 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 3/10 (2006.01); G01N 33/38 (2006.01)
CPC G01N 3/10 (2013.01) [G01N 33/383 (2013.01); G01N 2203/0019 (2013.01); G01N 2203/0044 (2013.01); G01N 2203/0676 (2013.01); G01N 2203/0682 (2013.01)] 10 Claims
OG exemplary drawing
 
1. 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.