degradation processes

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MDDS: monument damage diagnostic system.A decision support system for architects, conservators, authorities, students, ……

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Degradation processes

• degradation processes: mechanism & essential conditions

• influencing factors, like • environment (conditions)• material properties (conditions)

• Diagnosis + conservation / intervention• Use MDDS

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Why a diagnosis?

• Diagnosis of damage: assessing why restoration / intervention / maintenance is necessary

• Extremely important in order to guarantee a durable conservation

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Look-alike damages: push out

push out: frost action

push out: crypto-florescence

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Comparable crack types: different causes

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Illustrated glossary of damage types & definitions is contained in MDDS

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Foreseen users• Restoration architects

• Authorities / Monumenten Wacht

• Education (university students)

• General• Support communication: damage atlas, definitions• Background information: diagnosis, conservation

techniques

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Data are introduced on:

- the building- the wall or other element under investigation- the materials composing the wall- the damage found for wall or building element + per material- the area (or location) on the wall where the damage is present The system subdivides the data in:- properties- descriptions

- Inspector is supported in making hypotheses, reaching a diagnosis and planning interventions

Practical way of operating

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MDDS seminar Lisbon (2005)MDDS workshop Zeist (2005)

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MDDS: students work on site (2005 / 2006)

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MDDS: workshop Leuven (Feb 2007)

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Systematic description of wallDamage to wallDamage to individual materials

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Sampling for measurementmoisture and salt content

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Visual representationsalts

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1. 2. 3. 4. 5.

1. Quick Transporting 2. Slow Transporting 3. Salt Accumulating 4. Salt Blocking 5. Moisture Sealing

Liquid transport

Vapour transport

Information from EU projects: COMPASS

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Information from EU projects: Saltcontrol

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Report

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MDDS - Monument Damage Diagnostic System (current state)

• Prototype system

• Assessment of state of conservation historic buildings• Support diagnosis• Support interventions / treatments / measures• Documentation of monuments (archive)

• Interactive• User is supported during investigations• User finally decides on interventions