1. Introduction 5
2. Dilatometer Measurement 9
2.1 Description of the Device 9
2.2 Description of Installation and Test Procedures 10
2.3 Measurement Results 11

3. Stress Measurements according to the BGR Overcoring Method 13
3.1 Description of the BGR Gauges 13
3.2 Test Procedure 16
3.3 Measurement Results 17
4. Conclusions 22
5. Future Work 23
6. References 24