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Dr. rer. nat. Dr.-Ing. h. c., Prof. emer.
Director, Aedificat Institute Freiburg
Professor, Qingdao Technological University

 

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Curriculum Vitae Curriculum Vitae
Research Research
Teaching Teaching
published papers published papers
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Research

Sustainability of building materials and structures
  • Prediction of service life of reinforced concrete structures by means of probabilistic models
  • Optimizing energy consumption and environmental pollution with respect to designed service life of reinforced concrete structures
  • Use of industrial by-products such as lime to produce high performance low energy building materials
  • Reduction of mass flow in construction industry

Durability and Preventive Measures to Protect Reinforced Concrete and Concrete Structures

  • Chloride penetration by capillary suction during exposure to sea water in the tidal zone and salt solutions, prediction of service life of reinforced concrete structures
  • Observation of chloride penetration depth in old reinforced concrete structures and comparison with prediction models
  • Investigations into the effectiveness of surface impregnation of concrete with water repellent agents (silanes and siloxanes)
  • Effectiveness of integral water repellent treatment as a chloride barrier
  • Durability and service life under combined mechanical and environmental loads

 

Strain hardening cement-based composites (SHCC)

  • Optimization of strain hardening cement-based composites with respect to crack formation and durability
  • Characterization of strain hardening cement-based composites under imposed strains for realistic design
  • Potential for applications in practice

 

Shrinkage of concrete

  • Drying and moisture gradients, crack formation
  • Mechanisms of shrinkage of nano-porous materials such as hardened cement paste
  • Shrinkage of water repellent treated concrete

 

Mechanics of composite materials

  • Simulation of the structure of composite materials
  • Determination of fracture mechanics parameters by means of inverse analysis
  • Damage of composite structures under combined mechanical and environmental loads
  • Size effect on fracture mechanics parameters
  • Influence of surface energy on strength and strain softening
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