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Old 21-05-2018, 01:58 PM
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bojan
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Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 7,113
How about soaking with "concrete milk" first?
This is mix of cement and water, without agregate... sometimes called "laitance"

Last edited by bojan; 21-05-2018 at 02:29 PM.
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