In article ,
says...

In article ,
Charlie Pridham writes:
|
| I was always a bit shaky on the various limes, quick slaked etc I now can
| not remember what the chemicle reaction is that sets cement and whether
| there should be anything left at the end.

Builder's lime is slaked lime, calcium hydroxide. Modern cement
mortars don't use much of it, and the setting process is half
chemical reaction and half crystal growth.

There shouldn't be much leaching.


Regards,
Nick Maclaren.

Thanks
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea