BS 1377-2 Clause 3.2: Determination of moisture content (Oven-drying method)
- Mark Elkomos
Applies to QEST Web App
This page describes the functionality of the BS 1377-2 Clause 3.2 Determination of moisture content (Oven-drying method) test in the QEST Web App.
- 1 Overview
- 2 Data Entry
- 2.1 Preparation
- 2.1.1 Contains Gypsum
- 2.1.2 Contains Dissolved Salt
- 2.1.3 Grain Size
- 2.2 Measurements
- 2.3 Results
- 2.1 Preparation
- 3 Equipment
- 4 Reporting
- 4.1 Aggregate/Soil Test Report
- 4.1.1 Properties
- 4.1.2 Reported Values
- 4.2 Multiple Sample Agg/Soil Test Report
- 4.2.1 Properties
- 4.2.2 Reported Values
- 4.1 Aggregate/Soil Test Report
- 5 Work Progress and Complete Status
Overview
This worksheet allows for data entry per BS 1377-2 Clause 3.2.
Data Entry
Preparation
When this worksheet is first added, the preparation section is pre-populated with the most common values for performing this test, assuming that the the drying temperature is 105°C and the sample does not contain gypsum or salt.
The predetermined values can always be modified by clicking the Change button in the preparation section.
Contains Gypsum
If the user indicates that the sample contains gypsum, the worksheet will assume that the drying temperature should not exceed 80 degrees Celcius.
Contains Dissolved Salt
After checking the Contains Dissolved Salt checkbox, the user will need to indicate whether the amount of salt is measured in Parts per thousand (ppt) or Volume (grams per litre) and then indicate the amount of dissolved salt.
If the Volume measurement is used, the fluid density is also required in order to calculate the fluid content.
Grain Size
The selection of the grain size determines the expected minimum sample mass and the minimum balance readability requirement per the standard.
Measurements
The measurements in this test are quite simple being composed of the tare mass, tare and material wet mass and, finally, the tare and material dry mass.
It is expected that the first two masses will be captured on the individual worksheet along with the ID of the container being used and the Tested By will be set. The material will be placed in the oven and the dry mass populated after the drying operation is completed.
Entry of the dry mass in this water content test will be available for data entry in the Dry Mass Entry grid.
Results
The Results section will show the calculated moisture content result and it will be reported. If the material contains dissolved salt, the calculated fluid content will also be shown and reported.
If there is no dissolved salt in the material, the fluid content is not calculated or reported.
Equipment
For equipment to be available for selection in equipment drop down boxes, the equipment item must first be created in QESTLab's Equipment list. Refer to article Creating Equipment.
The following equipment can be selected on the worksheet:
Equipment label | QESTID | Notes |
|---|---|---|
Balance | 30005 | The balance used for capturing the tare and tare and material wet masses. |
Oven | 30004 |
|
Dry Mass Balance | 30005 | The balance used to capture the tare and material dry mass. Can be set from the Dry Mass Entry grid. |
Reporting
The results from this worksheet can be reporting on the following test reports.
Aggregate/Soil Test Report
Properties
QESTID | 18909 |
|---|---|
Name | Aggregate/Soil Test Report |
Child Of | Sample |
Reported Values
Field | Database Field Name | Unit | Precision | Condition |
|---|---|---|---|---|
Moisture Content | MoistureContentReported | % | If result <= 10 then 2 s.f. Else Nearest 1 | Always |
Fluid Content (%) | FluidContent | % | As above | Only shown if the fluid content has been calculated. |
Date Tested | QestTestedDate | N/A | N/A | Always |
Multiple Sample Agg/Soil Test Report
Properties
QESTID | 18980 |
|---|---|
Name | Multiple Sample Agg/Soil Test Report |
Child Of | Work Order |
Reported Values
As above.
Work Progress and Complete Status
The work progress rules noted below are the default set of rules for this test, these may be overwritten by system administrators and therefore behave differently on each QEST Platform instance.
Progress (%) | Criteria |
|---|---|
0% | The test has been registered in QESTLab. |
50% | The material wet mass has been calculated. |
100% | The moisture content result has been calculated. |
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