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847 views
04:31 Jun-26-2006

Azhar Jamil

NDT Engineer
Panama,
Joined May 2006
17
Inspection of concrete pillars

Can any one knows that how to found deterioration in the concrete pillar which supports steam turbine foundations.

for any queries please contact

regards



 
07:36 Jun-26-2006
Herman J. Quakkelsteijn
Re: Inspection of concrete pillars RTD developed a pulsed eddy current technique able to detect general wall loss on ferrous objects without the removal of concrete. Technique is proven on the legs of spherical tanks with up to 200 mm of concrete.

----------- Start Original Message -----------
: Can any one knows that how to found deterioration in the concrete pillar which supports steam turbine foundations.
: for any queries please contact
: regards
------------ End Original Message ------------




 
01:26 Jun-27-2006

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
278
Re: Inspection of concrete pillars You may need to provide more detail about the problem to solicit a response. i.e what thickness of concrete and damage mechanism you are seeking. If the concrete pillars are simple reinforced concrete, techniques such as Impact Echo or Acoutsic Emission from Corroding Rebar may be effective. Thicker sections and foundations techniques such as Ground Penetrating radar might provide data.



 
03:42 Jun-27-2006
Ernst Niederleithinger
Re: Inspection of concrete pillars Dear Azhel Jamir,
There are a lot of possibilities: Ultrasonics, radar, x-ray, Schmidt-hammer,....
More information (geometry, accessibility,...) is needed to select proper method.
Regards, Ernst Niederleithinger
----------- Start Original Message -----------
: Can any one knows that how to found deterioration in the concrete pillar which supports steam turbine foundations.
: for any queries please contact
: regards
------------ End Original Message ------------




 
03:47 Jun-27-2006
R. O. Duesing
Re: Inspection of concrete pillars ----------- Start Original Message -----------
: You may need to provide more detail about the problem to solicit a response. i.e what thickness of concrete and damage mechanism you are seeking. If the concrete pillars are simple reinforced concrete, techniques such as Impact Echo or Acoutsic Emission from Corroding Rebar may be effective. Thicker sections and foundations techniques such as Ground Penetrating radar might provide data.
------------ End Original Message ------------

Acoustic Emission is an excellent method for testing composite structures, in this instance concrete reinforced columns. On pre and post stressed concrete bridges and concrete support columns; i.e. highway overpasses, stepped loading and dynamic loading is applied while being monitored with Acoustic Emission sensors. The best scenario is to monitor suspect columns/spans at the same time with known good columns/spans in a comparative test.



 


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