joidevie Posted August 27, 2010 Share Posted August 27, 2010 Hi..We're in the process of buying up reclaimed terracotta / tomette floor tiles to re-use.. An initial overnight soak in water has not made the original mortar underneath any easier to remove!Am I missing a simple trick here?Many thanks. Link to comment Share on other sites More sharing options...
Chancer Posted August 27, 2010 Share Posted August 27, 2010 Use a diamond disc on an angle grinder. Link to comment Share on other sites More sharing options...
pachapapa Posted August 27, 2010 Share Posted August 27, 2010 Sablage ou hydrogommage. Link to comment Share on other sites More sharing options...
Théière Posted August 27, 2010 Share Posted August 27, 2010 [quote user="joidevie"]Hi..We're in the process of buying up reclaimed terracotta / tomette floor tiles to re-use.. An initial overnight soak in water has not made the original mortar underneath any easier to remove!Am I missing a simple trick here?Many thanks.[/quote]Hydrochloric acid, wear gloves and a charcoal mask though Link to comment Share on other sites More sharing options...
Dave&Olive Posted August 27, 2010 Share Posted August 27, 2010 hi ok Lemon juce ! Dave Link to comment Share on other sites More sharing options...
Chancer Posted August 27, 2010 Share Posted August 27, 2010 As the OP was referring to the mortar underneath the chemical and citrus fruit suggestions may be a little ineffective. Link to comment Share on other sites More sharing options...
Théière Posted August 27, 2010 Share Posted August 27, 2010 Maybe, I can't comment on how much lemon juice (citric acid) it would take. But the hydrochloric would still make quick work of cement/lime mortar top or bottom.Of course: Link to comment Share on other sites More sharing options...
pachapapa Posted August 27, 2010 Share Posted August 27, 2010 La meuleuse is the way to go, 23% HCl available in retail outlets at € 2 /lit is likely to prove costly.Suggest one weighs a piece of mortar and get a [IMG]http://www.stuart-equipment.com/adminimages/Digital_burette(1).jpg[/IMG] and do a little bit of[IMG]http://t3.gstatic.com/images?q=tbn:qt_rFhh0EGtI1M:http://www.btinternet.com/~chemistry.diagrams/titration.gif[/IMG]before embarking on this venture.[:)] Link to comment Share on other sites More sharing options...
joidevie Posted August 28, 2010 Author Share Posted August 28, 2010 Thanks for all the replies.. Test tubes at the ready! In truth, the recent batch is more chalk covered than cement and will be easier to prepare.. With over 1000 to do, I don't think stripping the underneaths completely bare will be the way forward.. Perhaps enough to get a good spread of 'colle'..Any good tips on what type of mix/product to use to glue? They're 20cmx30cm "parefeuilles" and 2cm thick, going on to existing old cement tiles (50's, and a little smooth on top..)Cheers. Link to comment Share on other sites More sharing options...
pachapapa Posted August 29, 2010 Share Posted August 29, 2010 Say 4 tommettes to a litre of acid say € 500 or one half the Spanish lemon harvest delivered in 50 tonne artics.[:)] Link to comment Share on other sites More sharing options...
mint Posted August 29, 2010 Share Posted August 29, 2010 Please excuse the intrusion, joidevie.Pacha, I'm not sure whether you got my latest email but I am re-sending it to you via PM. BTW, it's not anything critical so please don't worry if you don't respond to it. Thanks Link to comment Share on other sites More sharing options...
Wilko Posted August 29, 2010 Share Posted August 29, 2010 I cleaned around 600, used the Karcher, worked beautifully. Link to comment Share on other sites More sharing options...
pachapapa Posted August 29, 2010 Share Posted August 29, 2010 [quote user="Wilko"]I cleaned around 600, used the Karcher, worked beautifully.[/quote]hydrogommage makes less dust than sablage.[:)] Link to comment Share on other sites More sharing options...
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