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Mahia UCS Testing. Was it really worth it?. What is UCS testing?. Unconfined Compressive Strength To 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.

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Mahia ucs testing

Mahia UCS Testing

Was it really worth it?


What is ucs testing
What is UCS testing?

  • Unconfined Compressive Strength

  • To 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)


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.


Why are we interested in finding the ucs of this sandstone
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.


Testing standard
Testing Standard

  • AS 1141.51 - 1996

    Key Points –

  • Load rate, 1mm/min or 60 +/- 6kN/min

  • End surfaces shall be plane and be at right angles to the axis of the cylinder

  • 2 to 1 ratio



Abseiling is serious business
Abseiling is serious business

Just smile for the camera, they won’t know I’m crapping my pants!


The a team was reunited
The A Team was reunited………..

Steve “BA” Darby

Andrew “Face” Cameron

Rhys “Hannibal” Jones










Now the questions are, was Hamish happy with the results he got and were they what he wanted and was it all worth it?


In a nut shell
In a nut shell got and were they what he wanted and was it all worth it?

  • Results ranged from 1.0 MPa – 8.5 MPa

  • 15 MPa was the preferred target


Hmmmmmmmm
Hmmmmmmmm got and were they what he wanted and was it all worth it?

Is he about to turn green?


But…………….. got and were they what he wanted and was it all worth it?

  • 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.


Phew he s happy
Phew, he’s happy got and were they what he wanted and was it all worth it?

“Sweet as”


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