|
Gypsum
crust
|
Blisters &
cavernous decay
|
Fragile
flaking
surfaces
|
Field
flints in
dense cracking
mortar
|
Contour
crust
failure
|
Acid
dissolution
of binder
|
|
Permeable
macroporous
lime mortars
|
Roman
plaster
cement patch
damage
|
Roman
cement
with iron fixing
failures
|
Alabaster
softened by
water
|
Frost
damage
to external
tile floor
|
Water
related
collapse
|