Results:
Table 1 - Results for Testing using the AEISG Code of Practice
Table 2 - Results for Testing using the QMR Reactive Ground Test
Prior to testing as per the AEISG Code of Practice each sample was assessed for reactivity risk based on pH, carbonate and amount of reactive sulphide using the QMR Reactive
Ground Test (refer to Table 1 and Table 2 for results of both tests).
Conclusion:
Testing as per the AEISG code of practive resulted in samples BRG125522, BRG125526, BRG125531, BRG125532, BRG125535 and BRG125537 as reactive and samples BRG125523 and BRG125524 being marginal.
With reference to Table 2 the QMR Test identified very high levels of reactive sulphide and available energy in 7 samples ( note red cells in Qenergy column). One of these samples BRG125528 has very high carbonates and will not react. The remaining samples have high carbonates which prevent a reaction unless they are consumed acidic conditions (as caused by the addition of weathering agent for AEISG testing if the sample pH ≤ 7) or elevated temperature increasing the reaction rate. Sample BRG125532 does not contain sufficient reactive sulphide to cause a rise in temperature.
Assessed By:
Dr G. Cavanough
Date:
8th May 2023
Samples with Visible Sulphide Under Microscope:
Sample 5357C_RG09
Sample 5357C_RG03
Sample 5357C_RG01
Sample 5326C_RG10
Sample 5326C_RG05
Sample 5325C_RG06
Sample 5325C_RG04
Sample 5325C_RG02
Sample 5325C_RG01b
Sample 5325C_ RG01