Smectite minerals and buildings – how something very small affects some things very big

PhD defence, Friday 29 September 2017, Michael Rosenlund Lodahl.

2017.09.29 | Trine Berndt Turtiainen Scheelke

Michael Rosenlund Lodahl

During his studies, Michael Lodahl researched the smectite minerals in Danish Palaeogene clays. Palaeogene clays are special in that they possess a very large deformation potential, which may result in significant settlements or heave of structures built on smectite-rich clays. Michael investigated the effect of the content of smectite clay minerals in the clay on the deformation potential of clays. Moreover, Michael proposed an analytical deformation model, capable of reproducing the results from the laboratory tests. 

The new research findings contribute to the understanding of the fundamental parameters that affects deformation behaviour of clays, and the proposed model may provide a starting point for further development of analytical and numerical deformation models for the Danish Palaeogene clays.

The PhD degree was completed in collaboration between COWI A/S and the Department of Civil and Architectural Engineering, Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Friday 29 September 2017 at 13.00
Place: Building 3210, room  03.040, Navitas, Inge Lehmanns Gade 10, 8000 Aarhus C
Title of dissertation: Influence of smectite content on the deformation behaviour of clays
Contact information: Michael Rosenlund Lodahl, e-mail:, tel.: +45 5640 4673
Members of the assessment committee:
Expert Adviser Knut H. Andersen, NGI, Norway
Senior Geotechnical Engineer Anette Krogsbøll, Niras A/S, Denmark
Associate Professor Steffen Petersen (chair), Department of Engineering, Aarhus University
Main supervisor:
Professor (docent) Kenny Kataoka Sørensen, Department of Engineering, Aarhus University
Chief specialist Helle Trankjær, COWI A/S
Technical Director Niels Mortensen, nmGeo ApS
The PhD dissertation will be defended in English

The defence is public.
The dissertation is available for reading at the Graduate School of Science and Technology/GSST,
Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 24.04.2018