summaery2016: Projects

Cracks´n´Clay - The analyze of Dessication Cracks in Clay

Project information

submitted by

Dipl.-Ing. Maria Noack


cand. M.Sc. Yang Yang


Prof. Dr.-Ing. Karl Josef Witt

Faculty / Section:
Civil Engineering

Degree programme:
Civil Engineering [Construction, Environment, Building Materials] (Bachelor of Science (B.Sc.)),
Civil Engineering (Master of Science (M.Sc.)),
Environmental Engineering (Master of Science (M.Sc.)),
Natural Hazards and Risks in Structural Engineering (NHRE) (englischsprachig) (Master of Science (M.Sc.))

Type of project presentation

– Other –


– Other –

Exhibition Location / Event Location
  • Marienstraße 13

Participation in »ENERGIE.EXPERIMENT.ERLEBNIS. Eine Nacht die Wissen schafft.«

Project description online

In a desiccation process of clay soils, induced by evaporation, the lost of the fluid phase reaches to a certain suction stresses. The soil shrinks. If the tensile strength of the soil reaches, cracks will happen. This tensile failure of unsaturated compacted cohesive soils, caused by changes of hydraulic and mechanical coupled properties, can influence the stability and durability of earthwork and structure engineering applications, such as dams.
In the master thesis of Yang Yang, an analyze of the crack induced by desiccation process of surface evaporation on unsaturated compacted clay samples is done. The shrinkage behaviour is observed by Particle Velocimetry Method (PIV-Method) and the changes of the geometrical parameters are analysed with binary method. The crack initiation and duration are correlated with water contents and soil suction parameters.
First results of this study are presented with video and poster.

Exhibition Location / Event Location