Creating a Concrete Profile Using Break Test Results

What is a Concrete Profile?

Each concrete mix is unique and possesses its own special temperature-strength curve. This curve is captured in a concrete profile which is used to map the concrete's temperature data to its real-time strength. A new concrete profile for a mix is created using data gathered from a calibration process. One such process uses break tests to correlate the concrete's temperature data to its strength.

What's a Break Test?

To perform a break test, many small concrete cylinders of the mix are poured. Two of these cylinders are designated as control cylinders that are specifically used to record the temperature curve of the concrete as it cures. The temperature is recorded using our LumiCon Concrete Calibration Kit. The other cylinders are assigned as break test cylinders.

At pre-designated time intervals, a new break test cylinder undergoes a compression test to assess its strength at that specific time. This strength value is then paired with a temperature data point from the control cylinders to map the mix's strength with its temperature curve.

Once at least 5 data points from the break tests have been collected, we can set up a concrete profile that describes the properties of the mix in the LumiCon app.

Creating a Concrete Profile:

Through this method, we currently only support the Nurse-Saul maturity method and the Plowman strength-maturity relationship. If your project requires the usage of different models, please get in touch with us at support@lumicon.io

Follow the steps below to create a concrete profile using break test results:

Steps

1. Locate your construction site and tap the 'Concrete Sensor' tile to enter the job overview page.
2. Tap the 3 dots on the top-right side of the screen, then tap on Concrete Profile.
3. Tap the New Profile icon, then select a 'Generate profile from break test results'.
4. Enter the required information including Name, Datum Temperature, and Break Test Results.
5. Once finished tap Calculate to calculate the curve.
6. Finally, tap 'Create Profile' to finish adding a new concrete profile to the construction site.