Download - Mahia UCS Testing
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Mahia UCS TestingWas it really worth it?
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What is UCS testing?Unconfined Compressive StrengthTo determine the load a sample can take to
create a failure of some description.Examples of UCS testing include, concrete,
soil stabilisation (cement or lime) and rock.Stress=Force/Area (MPa=N/mm2)
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Aim:To establish the compressive strength of the
rock found on the wall to find out if the rock is suitable for stabilisation to save the road above.
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Why are we interested in finding the UCS of this sandstone?To reinforce the sandstone rock found in the wall.
How is it going to be reinforced?By drilling holes in to the sandstone and grouting
in reinforcing bars.
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Testing Standard
AS 1141.51 - 1996
Key Points – Load rate, 1mm/min or 60 +/- 6kN/minEnd surfaces shall be plane and be at right
angles to the axis of the cylinder2 to 1 ratio
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“The coal face”
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Abseiling is serious business
Just smile for the camera, they
won’t know I’m crapping my
pants!
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The A Team was reunited………..
Andrew “Face” Cameron
Rhys “Hannibal” Jones
Steve “BA” Darby
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Or was it more like the 3 Stooges?
Time will tell
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Raw sample
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Sample needed to be secured so that it could be cored
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Core drill setup
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Freshly Cored Cylinder
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Preparing cylinder
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Finished product
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Set up and ready for testing
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Now the questions are, was Hamish happy with the results he got and were they what he wanted and was it all worth it?
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In a nut shell
Results ranged from 1.0 MPa – 8.5 MPa15 MPa was the preferred target
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Hmmmmmmmm
Is he about to turn green?
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But……………..Better to have tested and find out the
sandstone was not suitable than to discover that fact after money and time was spent on it to watch it potentially fail.
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Phew, he’s happy
“Sweet as”