Mahia ucs testing
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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

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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)


Mahia ucs testing

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


The coal face

“The coal face”


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


Or was it more like the 3 stooges

Or was it more like the 3 Stooges?

Timewilltell


Raw sample

Raw sample


Sample needed to be secured so that it could be cored

Sample needed to be secured so that it could be cored


Core drill setup

Core drill setup


Freshly cored cylinder

Freshly Cored Cylinder


Preparing cylinder

Preparing cylinder


Finished product

Finished product


Set up and ready for testing

Set up and ready for testing


Mahia ucs testing

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

  • Results ranged from 1.0 MPa – 8.5 MPa

  • 15 MPa was the preferred target


Hmmmmmmmm

Hmmmmmmmm

Is he about to turn green?


Mahia ucs testing

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.


Phew he s happy

Phew, he’s happy

“Sweet as”


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