The sensors can estimate the early-age and compressive strength of in-place concrete based on the maturity method, according to ASTM C1074. The goal of these sensors is to measure the temperature of concrete in real-time and correlate this data to the concrete’s strength. Temperature data is collected by the sensor and uploaded to any smart device within an app using a wireless connection. This information is then used to calculate the compressive strength of the in-situ concrete element based on the maturity equation that is set up in the app.