Possible Causes of Concrete Post Decay - Any Ideas?


Postby Zhinob_Meshmoll » Thu Apr 10, 2014 11:45 am

Hi Forum, I have a 2 year old fence and some of the concrete support posts are splitting/cracking.

In your experience can anybody give possible reasons? Are the posts just poor quality to start with.

Regards

Pic 1
http://tinypic.com/r/sq6tqs/8

Pic 2
http://tinypic.com/r/x2jb6g/8
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Postby welsh brickie » Thu Apr 10, 2014 4:48 pm

water ingress and frost would cause it. Probably caused by a hairline crack in the concrete
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Postby Zhinob_Meshmoll » Fri Apr 11, 2014 9:39 am

Thanks for the reply WB.

The fact I can see the line of the steel inserts inside makes me believe there's not enough concrete to surround them. And I think therein lies the weakness.

Could vibrations of the fence panel cause cracks in the concrete? Either the wind rattling them or the kids kicking the ball at it?

I think poorly made posts are the real issue though.

Regards
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Postby welsh brickie » Sat Apr 12, 2014 11:01 am

fabrication is the fault then, if the steel is rusty then water has penetrated it,probably best to replace it as it will only get worse
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