a technical/historic document on lime mortar in old buildings. Specifically looking at a gate (previous owner one King Midas) and the potential use of lime mortar for repair/stabilisation.
http://repository.upenn.edu/cgi/viewcontent.cgi?article=1020&context=hp_theses
warning - its a 250 page pdf clocking in at 5mb
http://repository.upenn.edu/cgi/viewcontent.cgi?article=1020&context=hp_theses
warning - its a 250 page pdf clocking in at 5mb