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Old objects New guidelines Bart Ankersmit Colloquium 'Advanced Tools for Preventive Conservation‘ Brussel, 29 april 2016
Old objects
New guidelines
Bart AnkersmitColloquium 'Advanced Tools for Preventive Conservation‘Brussel, 29 april 2016
The problem
Diagnostics
The solution
The current situation
What is the relation between
Condition & Risk?
Condition Exposure in the past
1722 Inventorymevrouws camer1 cabinet
Archival research
1922 1977 2010
Condition in 1977
Condition in 2010
50
55
60
65
70
75
0 5 10 15 20 25 30 35
RH
(%
)
Time (days)
Panel 8mm
Panel 10mm t1/2= 11 days
t1/2= 4 days
Z. Huijbregts et al, Journal of Cultural Heritage, 16(4), 419-427
S. Ekelund. Climate4Wood project
Before 1967 2010 Before 1907
Core construction Doors of Dutch furniture
n = 138
Early Dutch panel
paintings
n = 254
Restrained Non-
restrained
Restrained Non-
restrained
54% 46% 20% 80%
Glue joint failure 90% 1% 79% 12%
Crack in wood 8% 4% 12% 8%
Out-of-plane
deformation
7% 1% 5% 2%
Shrinkage without
cracks *
6% 65%
Cultural values
Climate risksto moveable
collections
Mitigation
A new publication“Managing Indoor Climate Risks”
27
What matters to you?
Objectives Possible attributes
Minimize the rate of deteriorationLength of cracks (cm)
Number of cracks (#)
Surface area of mould (cm2)
Number of mould out breaks (#)
Degree of polymerisation (cellulose based materials) (#)
Folding number (#)
Tear and tensile strength (kN/m)
Corroded area (cm2)
Colour change: E (-)
Maximize access to (the cultural
values of) the collection
Number of visitors (#)
Number of visitors to the study collection, eg reading room
(#)
Number of objects on (inter)national loan (#)
Number of loan requests (#)
Number of exhibitions (#)
Maximize income €, $
Minimize costs €, $
It’s all about object’s, but we’re climatising air | 24 maart 201431
What will this newspaper look like in 50 years?
Wooden floor
Dri
vin
g ra
in
Leakage
Ground water
Relative Humidity
Tide marks
Salt crystalization
Freeze-thaw damage
Rot / Fungi
Rot / Fungi
R. Kramer. TUe
39
Where does the energy come from?
Min
imiz
e c
os
ts
Min
imiz
e t
he r
ate
of
de
teri
ora
tio
n
Ma
xim
ize
ac
ce
ss t
o (
the
cu
ltu
ral
va
lue
s o
f) t
he
co
lle
cti
on
a
nd
bu
ild
ing
Sys
tem
s (
i.e
. m
ea
ns
)
ob
jec
tive
s
To
tal costs
Build
ing
Colle
ctio
n
Experie
nce v
alu
e
Arc
hitectu
ral valu
e
Etc
.
Robustn
ess
Lifetim
e
Volu
me / s
ize
Access
Op
tio
n 1
Generation 250.000 0 0 0 - 0 - -- -
Distribution 50.000 0 0 - - + + + -
Delivery 15.000 + +++ - - ++ + ++ +
Measuring 5.000 0 0 0 0 0 + ++ ++
Total system 320.000 + +++ -- --- +++ ++ +++ +
Op
tio
n 2
Total system 50.000 ++ ++ --- -- ++ + - ++
Op
tio
n 3
Total system 75.000 +++ +++ + -- + - + +
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