SixthFramework Programme

Project no. Contract no. 022714Project acronym: DESALINATIONProject title: Assessment of Desalination Mortars and Poultices for Historic MasonryInstrumentThematic Priority: 8.1.B - 3.6 The protection of cultural heritage

DL 6.4 News letter 3

Due date of deliverable: 30/04/2007Actual submission date: 30/04/2007Start date of project: April 1, 2006 Duration: April 1 2006-April 1 2009

IUAV Revision [draft 1]

Project co-funded by the European Commission within the Sixth Framework Programme (2002-2006)

Dissemination Level

PU Public X

PP Restricted to other programme participants (including the Commission Services)

RE Restricted to a group specified by the consortium (including the Commission Services)

CO Confidential, only for members of the consortium (including the Commission Services)

SIXTH FRAMEWORK PROGRAMME

Assessment of desalination mortars and poultices for historic masonry (2006-2009)

EC PROJECT DESALINATIONNEWSLETTER 3/2008

Contract No. 022714

Scientific co-ordinator: Fulvio Zezza University IUAV of Venice

DESALINATION Project -gaining a better understanding of the salt transport mechanism between a salt

laden substrate and a material applied on top of that-assessment of the possibilities and limitations of desalination treatments

method to assess the performance of desalination systems

Methodology(non destructive

techniques- NDT)

Laboratory tests(poultices and

substrates)

scientific knowledge on how desalination works

recommendation for a standard to test desalination systems

decision-guideline on how to choose a desalination mortar/poultice

WP3 – Case studies

Terese Convent

assessment of desalination treatment

before and after treatment application

by NDT measurements

NDT-Research Methodology

diagnosis controltreatment

A B C

characterization of supports

I. kind of material (brick, stone)

II. assessment of state of conservation

III.colourIV. temperatureV. ultrasonic pulses VI. resistivity

I. application methodology

II. sampling criteria

III.product analysis

assessment of treatment

(compared analyses)

I. soluble salt content

II. efficiency of salt extraction(surface changes, colour, temperature, ultrasonic pulses, resistivity)

treatment application

WP4 – Performance of desalination systemsTests performed in

laboratory: • characterization of

poultices in contact with substrate of diverse porosity

• tests on workability and drying behaviour of poultices applied on 2 substrates

• study of water flow from the poultice to the substrate

• fractional factorial experiments to assess poultice effectiveness on salt contaminated substrates (test on effectiveness)

• investigation of the effect of the clay/sand ratio and of the grain size of the sand on the total porosity and pore size distribution of the poultice started

Waag building AmsterdamThe Netherlands

evaluation of desalination effectiveness of different poultices applied on building materials on site

WP3 – Case studies

Italy-Venice San Geremia Church

Augustusburg PalaceGermany-Bruhl

FranceDijon

St. Philibert Church

WP5 - NMR research

• diffusion plays a minor role in the first stage of drying process

• a poultice should be selected on basis of the pore sizes of both poultice and substrate

• the poultice applied on the brick with smallest pores (1:3) transported salt quicker than with other poultices

• the large pore of substrate can be blocked by kaolin from poultice

WP6 – Knowledge transfer

MDDS philosophy:

• assessment building

• description of decay

• diagnosis: assessment damage mechanism

• well defined intervention

The project website (www.bk.tudelft.nl/desalination) has been implemented:

• a feedbacks groups of end users has been contacted and involved in a short questionnaire about Desalination Project and desalination treatment

• more information about NMR techniques, MDDS systems and simple desalination techniques to evaluate desalination efficiency and a request of information about how to proceed with badly decayed substrates have been received

• link to TUE-NMR and MDDS presentation will be provided

implementation in MDDS

WP33.3 Procedure of test panel (M33)3.4 Comparison desalination result between lab test and test panel (M33)

WP44.3 Report on the results on the evaluation of the performance of different desalination systems M324.4 Scheme which indicates what desalination system may be used successfully on substrates with specific pore-size distribution M32

WP55.5 Numerical indication of the amount of salt to be extracted by a mortar or mortar/poultice (M33)

WP66.7 Workshop in Germany (M33)

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