Applies to QESTLab

This page describes how to use the Concrete Sample (AU) screen to to record the results of the test for determining the air content of fresh concrete, where the data is recorded originally on paper worksheets.

Overview

Results for the air content of freshly mixed concrete can either be entered in full on the Concrete Sample (AU) screen, or as final results in bulk entry.

Data Entry Using the Concrete Sample (AU) Screen

The air content test results can be entered directly at the bottom of the sample screen on the Measurements & Curing tab.

More details

Detailed descriptions of the required fields can be found in the test method description.

Air content values can either be free entered or calculated from individual readings depending on how much data entry is required, and whether you want to record intermediate values.

Initially:

All the fields are locked except for:
- Air (%) Compaction
- Air (%)
Both the Calculate checkboxes are unticked and the left checkbox is locked.

Step 1

Select the required Air Meter from the equipment list.

Step 2

Select the code for the compaction type used from the list for Air (%) Compaction.

Step 3

At this point there are three alternate ways that the air content result can be recorded:

Direct Entry of Final Result;
Calculate Final Result;
Calculate All Results.

Enter the test results using one of these methods.

Direct Entry of Final Result

Enter the previously calculated air content result into the Air (%) field.

Calculate Final Result

Tick the unlocked Calculate checkbox.
1. The Air (%) field will become locked.
2. The second Calculate checkbox, the Apparent Air (%) and the Agg.Corr. (%) fields will become unlocked.
Enter the appropriate values for Apparent Air (%) and Agg.Corr. (%).
When valid values for both fields are entered, the Air (%) value will be calculated.

Calculate All Results

Tick both the Calculate checkboxes.
1. The Air (%) field will become locked.
2. Both of the fields for Air Gauge Values and the Agg.Corr. (%) field will become unlocked.
Enter the measured values for the Air Gauge Values and Agg.Corr. (%).
When valid values for both the Air Gauge Values are entered, the Apparent Air (%) value will be calculated.
When valid values for all three fields are entered, the Air (%) value will be calculated.

Data Entry Using Bulk Entry Screen

Bulk entry has been designed to allow either entry of final results, or to avoid interfering with individual readings if they exist (entered either by QESTField or QESTLab).

Note that the following fields are not available on all bulk entry views.

Field Prompt	Field Type	Description

Field Prompt	Field Type	Description
Air Content As	Dropdown	A dropdown consisting of the following values: Actual Apparent Calculated From Readings The behaviour of each is as follows. Note that using either the Actual or Apparent option clears any existing air content data not shown (air gauge readings, etc.). Actual The Measured Air (%) field is displayed and allows direct entry of the measured air content. Apparent The Apparent Air (%) field is displayed and allows direct entry of apparent air content. Calculated From Readings The Measured Air (%) field is displayed, is read-only, and shows the calculated air content value from the individual readings.
Apparent Air (%)	Number	Rounded to the nearest 0.1.
Measured Air (%)	Number	Rounded to the nearest 0.2.
Air Content Compaction	Dropdown	Sets the Air Content Compaction Method based on the Concrete Compaction Method list.

Reporting Air Content

Reporting of air content takes place on the Concrete Test Report (AU) as described in the test method description.

Options controlling the reporting of air content are provided on the Options tab of the Concrete Sample (AU) screen.

QEST Platform 5.7 Documentation

Air Content of Fresh Concrete (AS 1012.4.2)

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