Probably not a lot of interest in this, but perhaps someone may find it enlightening:
ScienceDaily (Sep. 30, 2009) Ã¢â‚¬â€ Plaster made from lime is environment-friendly, repairable and sustainable. Despite this, lime plaster on historic buildings has been replaced in modern times by plaster containing Portland cement Ã¢â‚¬â€œ which has caused severe damage to historic buildings. Experts, researchers, craftsmen, manufacturers and authorities from throughout the Nordic region are now assembling for the 10:th Jubilee Conference on lime and lime mortar, with the aim of promoting historic buildings, as well as new build, access to traditional building materials.
The rest of the (short) article at: