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Rapportage inventarisatie enkelvoudige voegen - Curnet

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Appendix Questionnaire<br />

CONCEPT 26/5/2003<br />

Dear Sir,<br />

I assume you are familiar with the fact that Rijkswaterstaat as a government organisation in<br />

The Netherlands is the owner of the motorways, canals, rivers and storm barriers.<br />

A survey of maintenance costs showed that after resurfacing projects, the maintenance and<br />

replacement of single seal joints is the major origin of expenses for motorways.<br />

Therefore Rijkswaterstaat has initiated an internal quality improvement project for single seal<br />

joints which consists of the following phases:<br />

1. Survey and analysis of problems<br />

2. Discussion with nabouring countries about their experiences<br />

3. Proposals for better design, fabrication, installation etc. laid down in specifications<br />

4. Proposals for maintenance<br />

For phase 2 we would like to discuss with the Ministry of Transport in Flanders and Wallony<br />

and the BASt in Germany the following subjects:<br />

1. Types of single seal joints<br />

If used, what are the experiences with:<br />

• Epoxy nosings with bonded seals<br />

• Steel nosings anchored in epoxy<br />

• Steel nosings anchored in concrete<br />

• Steel nosings in polymeric concrete<br />

• Bituminous joints<br />

• Flexible plug joints<br />

• Buried joints<br />

• Finger joints<br />

• Mat joints<br />

Are types excluded?<br />

2. Design<br />

Are traffic loads and movements from standards and measurements used for design<br />

calculations and verification tests? When tests are carried out, which boundary<br />

conditions are used and do they include the most adverse design situations? What<br />

design life is aimed at? Are the structures tested and evaluated with respect to the<br />

brittleness and the risk of crack propagation<br />

Is there a tendency to avoid joints in bridge structures?<br />

70 <strong>Rapportage</strong> <strong>inventarisatie</strong> <strong>enkelvoudige</strong> <strong>voegen</strong>

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