English translation: screw piles filled/injected with concrete and cement grout
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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Dutch term or phrase:
betonschroefmortelpalen
English translation:
screw piles filled/injected with concrete and cement grout
Explanation: SCREW INJECTION PILE (vibration free, displacement pile)
The screw injection pile is, basically, a steel tube pile encased in hardened cement grout. During installation the ground is wholly displaced, thereby increasing the bearing capacity. The steel tube is installed by screwing, whilst simultaneously injecting cement grout. During the installation the grout acts as a lubricant, which temporarily reduces driving resistance. When set the cement grout increases the strength and stiffnes of the pile, transfers part of the loading to the ground and gives corrosion protection to the steel tube. The steel tube is filled with either cement grout or concrete.
Thanks Evert. Thanks also to David, but as I said, I had already found screw piles. Evert's cement grout seems best to fit the context. 4 KudoZ points were awarded for this answer
Yes, but how do you combine this with beton AND mortel???
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Answers
32 mins confidence:
Screw piles / screw piling
Explanation: Screw piles
... Screw Piles & Anchors http://www.piletech.com.au Australia Piletech Pty Ltd is Australias
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ACD Enterprises - Screw Piling SpecialistsACD Screw Piling ...
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Evert has explained, however this explanation would normally only be needed once per section of a document IMHO.
-------------------------------------------------- Note added at 2002-03-24 15:59:03 (GMT) --------------------------------------------------
What I actually meant was, the qualification of concrete and cement grout injection, and not the whole shooting match.
screw piles filled/injected with concrete and cement grout
Explanation: SCREW INJECTION PILE (vibration free, displacement pile)
The screw injection pile is, basically, a steel tube pile encased in hardened cement grout. During installation the ground is wholly displaced, thereby increasing the bearing capacity. The steel tube is installed by screwing, whilst simultaneously injecting cement grout. During the installation the grout acts as a lubricant, which temporarily reduces driving resistance. When set the cement grout increases the strength and stiffnes of the pile, transfers part of the loading to the ground and gives corrosion protection to the steel tube. The steel tube is filled with either cement grout or concrete.
The translation workplace 
