SIXTH FRAMEWORK PROGRAMME Assessment of desalination mortars and poultices for historic masonry ( ) EC PROJECT DESALINATION NEWSLETTER 2/2007 Contract No Scientific co-ordinator: Fulvio Zezza University IUAV of Venice

WP 1: management WP 2: interviews and selection of desalination system WP 3: case studies WP 4: performance of desalination systems WP 5: NMR research moisture and salt transport WP 6: knowledge transfer Work Package (WP) list The following meetings have been organized and the meeting minutes have been produced for each scheduled meeting 1st meeting 1st 6M meeting 1st WP4 meeting 1st Workshop Desalination 2nd 6M meeting Venice, 9-10 May 2006, Italy Dijon, October 2006, France Delft, 9 February 2007, The Netherlands Venice, May 2007, Italy Venice, May 2007, Italy WP1 – Coordination

UNIVERSITY IUAV OF VENICE – FACULTY OF ARCHITECTURE Aula Gradoni – Santa Marta, Dorsoduro 2196 Venice May 21-22, 2007 WORKSHOP DESALINATION The Workshop proposes an approach to the complex desalination question and penetrates into the scientific and technological objects of the EC Project Desalination to gain a better understanding of the salt transport mechanism between salt laden substrates and poultices. Possibilities and limitations of the desalination treatments are considered taking into account from one hand the environmental conditions and the salt origin, and, from the other, the products characterization, within a modular desalination system which considers different substrates as composition and properties. The Workshop Desalination aims to extend the knowledge of the restorers on the practice for desalination: the materials properties, the environmental conditions, the kind of salt and the type of treatments to apply for desalination play a fundamental role in their decision.

The results of the online survey of Desalination Questionnaire, collated and assessed using statistical software (SPSS), give an insight into the current working practice and materials selection of conservators, contractors and architects WP2 – Interviews/selection of mortars Location of respondents Type of poultice products used

WP3 – Case studies In situ investigations Church of Zoutelande Waag building Amsterdam The Netherlands Italy-Venice Terese ConventSan Geremia Church New Orleans USA Augustusburg Palace Germany-BruhlFrance-Dijon St. Philibert Church

Practical demonstration performed in situ during the 1st Workshop (Venice). Three different kind of poultices with different grain size composition, specifically prepared by Remmers, have been applied on substrates previously detected by NDT techniques. The comparison of the results (pre – post treatment) by means of the methodological research foreseen in the Project will be the aim of the next in situ research work. WP3 – Case studies Case study: Terese Convent - Venice

Within the laboratory tests the characterization of poultices workability, shrinkage and composition has been completed for the four main types of poultices: cellulose based poultices clay based poultices (mineral class) poultices made off a mixture of cellulose and mineral compounds ready to use poultices WP4 – Performance of desalination systems The first results of moisture transport for different kind of poultices (kaolin sand, cellulose poultice and Arbocel poultice) applied on different substrates, (a fired clay brick and a calcium silicate brick), have been presented The selection of the salt mixture composition for lab test is ready calcium silicate brickfired clay brick fine porous coarse

Salt transport and building materials WP5 - NMR research NMR equipment Grey calcium silicate stone White calcium silicate stone Red brick Yellow marl limestone WP6 – Knowledge transfer implementation in MDDS Project website: salt diffusion on porous building materials TNO organized a miniworkshop for the partners in the project on the use of MDDS (Monument Damage Diagnostic System), which took part in Feb The project website was developed ( Activities around this deliverable have been performed by TNO and subcontractor SNA.

WP Common procedure for assessment of treatments M Description of case studies M24 WP4 4.3 Report on the results on the evaluation of the performance of different desalination systems M Scheme which indicates what desalination system may be used successfully on substrates with specific pore-size distribution M32 WP5 5.3 Insert for air flow and relative humidity control during NMR scanning M Input data for model on moisture and ion transport during drying for mortar/mortar/poultice and substrate combination M22 WP6 6.4 News letters 3 M25 NEXT DEADLINES