	US 12,461,069 B2
	Systems and methods for estimating concrete strength using surface wave speed
Tej N. Pantha, Raleigh, NC (US); Armita Mohammadian, Raleigh, NC (US); Shawn G. Anderson, Raleigh, NC (US); Klarissa Ramos, Raleigh, NC (US); Ethan Loewenthal, Durham, NC (US); Joshua Scott, Raleigh, NC (US); Ashtad Javanmardi, Raleigh, NC (US); and Akash Nikam, Knightdale, NC (US)
Assigned to Predictant LLC, Raleigh, NC (US)
Filed by PREDICTANT LLC, Raleigh, NC (US)
Filed on Nov. 19, 2021, as Appl. No. 17/531,515.
Prior Publication US 2023/0160855 A1, May 25, 2023
Int. Cl. G01N 29/07 (2006.01); G01N 29/24 (2006.01); G01N 29/44 (2006.01); G01N 33/38 (2006.01); G06N 20/00 (2019.01)

CPC G01N 29/07 (2013.01) [G01N 29/2462 (2013.01); G01N 29/44 (2013.01); G01N 29/4418 (2013.01); G01N 33/383 (2013.01); G06N 20/00 (2019.01); G01N 2291/011 (2013.01); G01N 2291/0232 (2013.01); G01N 2291/02827 (2013.01); G01N 2291/0423 (2013.01)]

26 Claims

1. A method for estimating compressive strength of a concrete foundation, the method comprising:

determining compressive strength measurements corresponding to surface wave speeds for a plurality of concrete test specimens;

determining a speed of surface waves in the concrete foundation based on a plurality of peak-to-peak wave speeds, wherein the plurality of peak-to-peak waves speeds is based on sensor data received from a first accelerometer and sensor data received from a second accelerometer, wherein the first accelerometer and the second accelerometer are positioned in a spaced relationship relative to each other and the concrete foundation, wherein the sensor data results from a plurality of test events, wherein each test event comprises surface waves on the concrete foundation triggering the first and second accelerometers; and

estimating compressive strength of the concrete foundation based on the compressive strength measurements and corresponding surface wave speeds for the plurality of concrete test specimens and the speed of surface waves in the concrete foundation.