Settings > Sensor > Slump Calibration
Streamlining the process of measuring the workabilityThe consistency of fresh concrete before it sets is called workability. The makeup of a mix is measured using a slump flow test to measure both vertical and horizontal settling. Slump factors in the viscous nature of a mixture and is measured vertically. Spread factors in the flow of the material and is measured horizontally. of a mixture is dependent on the collection of data. The COMMANDassurance ProbeA probe device mounted in the side of a bin to measure the moisture content of aggregate materials such as sand. facilitates this by collecting pressure readings as the drum rotates. You may then associate specific pressure readings with the expected workability based on slumpSlump is defined as the number of inches (or millimeters) concrete will sag, or slump, when a special test cone filled with the concrete is turned upside down and the cone pulled off the concrete. In other markets this is called ‘consistency’. Consistency for concrete can be stated different ways. Examples are: slump, flow, workability. We mostly use ‘slump’. tests performed.
As part of measuring the workability of a mix, the Probe provides regular readings that can be indicative of a mix's workability. The Probe's design only allows it to gauge the consistency of a mixture based on the pressure or resistance experienced with each drum rotation. Identifying workability is done by performing a traditional slump test.
We recommend recording the pressure reading provided by the Probe once a loadThe total amount of concrete or asphalt that is being or has been batched for delivery. is fully mixedAfter loading, when the concrete becomes homogenous.. Obtain sufficient material to perform a slump test. After measuring the results of the slump test, use the calibration table from this screen to indicate the results of the slump test (Workability) and the resistance measured by the Probe (Pressure). Multiple slump tests are necessary to gauge workability for varying mixtures of material.
Adding a probe configuration
The COMMANDassurance Probe is designed to assist with measuring the consistency of a concrete mixture without the need for manual cone testing. Based on the range of products sold at a company, you'll need to correlate slump or spreadThe consistency of fresh concrete before it sets is called workability. The makeup of a mix is measured using a slump flow test to measure both vertical and horizontal settling. Slump factors in the viscous nature of a mixture and is measured vertically. Spread factors in the flow of the material and is measured horizontally. with multiple pressure readings. Once these relationships are mapped out in TrackIt, drivers may identify whether a mixture is fully mixed or requires more water simply based on the pressure readings obtained by the probe.
Calibration Tables dialog window
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The label for the calibration table used with specific products at your company. |
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The Drum Type associated with the calibration table. |
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The table to use with any product not listed on an existing calibration table should be marked as the default option. This ensures that all vehiclesAll machines used as a means of production on a construction site or at a batch plant. refer to a calibration with their probes based on the product used. Tables with specific product codes associated are used in place of the default table when a ticketShort for “delivery ticket,” which is printed and given to the driver. Also called a tag or docket. The ticket includes, at a minimum, the product(s) ordered and the delivery address. It can also include the amounts of materials batched to form the mix. In the past, producers sent copies of the delivery ticket with prices as invoices; now tickets and invoices are two separate documents. contains any included products. |
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The unit of measurement used to indicate the consistency of a concrete mixture. This is gauged by detecting the resistance of concrete pressing against the probe with each drum rotation. The measurement used is indicated on the in the table label as PSI or kPa. |
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The slump or spread of a concrete mixture associated with a pressure level is indicated here. This is gauged by performing multiple cone tests to measure actual slump or spread. Once this measurement is obtained, it should be associated with a specific pressure reading. This correlation then allows drivers to better gauge slump or spread based on the pressure readings obtained by the probe. Concrete workability is best measured when the drum speed is set between 0.5 and 3 RPM (low speed range). |
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List the different products or concrete mixtures that should be associated with this calibration table. Certain products may prove more viscous than others and will result in different workability and pressure readings. The product codes here are matched with ticket data. Although each ticket can only have one concrete product code associated, the calibration table may use multiple product codes. |
To add a slump calibration
- Navigate to .
- Click the Add Configuration
button in the upper-right corner of the screen. - Provide a Name for your probe setup and set the Type. If you want this to be the default calibrations used with your probes, select the Default Calibration Table
check box. - Click the Add Row
button and add values for the Pressure and Workability variables in the table. - From the Product Code table, click the Add Row button and specify the concrete product codes you want to associate with this table.
- Click Save & Close
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To add mix designs in bulk
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Navigate to .
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Click the Upload CSV File
button. -
Click Choose File
to add a file from your computer.- File requirements:
- Name column corresponds to the Name of the associated slump calibration.
- Type column corresponds to the Slump or Spread type of calibration.
- Product column corresponds to the Mix Design Code that comes from the QCWork undertaken by a contractor, the client's representative or, possibly, an insurance company to ensure the quality of materials and work on site is accomplished in accordance with the agreed upon specifications and accepted standards. or Dispatch system when the ticket is sent to TrackIt.
- File requirements:
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Click Upload
to add the mix designs to the slump calibrations.
