Mineral Building Materials

- Tasks / Main focus
- Special facilities
- Contact person

Department 11 Mineral Building Materials is subdivided into the following Units:

  • Unit 111  Concrete Technology, Rehabilitation
  • Unit 112  Material Behavior and Modelling
  • Unit 113  Building Envelope, Energy Efficiency, Floor Constructions

The department is involved in the study of diverse mineral building materials especially binders, admixtures, additions, concrete, masonry units, mortar, natural stone, ceramics, plaster and rendering, glass fibres, plastics, and thermal insulation products. Our clients are manufacturers, distributors and users of building materials, mainly in Germany and Europe.

The department deals with research projects, and provides expert reports in the field of certification, surveillance and testing of building materials.

In addition we provide on site supervision as partners for the German Institute for Civil Engineering (Deutsches Institut für Bautechnik (DIBt)) Berlin, the German Standards Committee (DIN) and the European Committee for Standardisation CEN, the Federal Highway Research Institute (Bundesanstalt für Strassenwesen (BASt)), the Road and Transportation Research Association (Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV)) and the Associations for Quality Protection. Our highly competent staff is active in the following expert committees of the DIBt: concrete technology (binders, admixtures, additions, concrete) fibre cement, autoclaved aerated concrete, lightweight concrete, wall panels, (masonry units, mortar), building materials and building types for heat protection and sound insulation (heat conductivity, thermal insulation products). Furthermore, some members of staff act as experts on behalf of the DIBt and European Institutions. The DIBt has accredited the department as testing, surveillance and certification body for 205 building products in Germany and for 20 building product groups within Europe.

The department provides state of the art measuring, testing and analysis technologies including non-destructive methods and computer technologies to test building materials subjected to various mechanical and physical loads.

 Tasks / Main focus
  • Research and development projects for building materials, building design and building methods
  • Improvement of building materials for thermal insulation such as environmental- friendly agents for XPS insulation products, fibre insulation products which are less harmful to health.
  • Development and application of calculation and measuring methods using numerical simulation models
  • Development of non-destructive testing methods
Testing / Determining
  • Application of numerical simulation methods in the field of thermal insulation properties
  • Testing and evaluation of building materials and constructions to determine its elastomechanical and rheological properties as well as their durability and thermal insulation
  • Determining the continuous fatigue strength of building materials (concrete, masonry) and constructions: tensile and compressive strength, Young’s modulus, fatigue strength, shrinkage behaviour, creep behaviour, moisture behaviour and cyclic temperature behaviour

Air-conditioned laboratory for mechanical and physical testing

Testing equipment to determine the Young's modulus of concrete

Air-conditioned laboratory for mechanical and physical testing Testing equipment to determine the Young's modulus of concrete
Investigations / Analyses / Expertises
  • Investigation and implementation using our expertises in building-engineering, building systems and structural damages
  • Investigation and assessment of new building types and methods such as brick cladding, ceiling and floor constructions (glass fibre plates, hollow floors, heated floor screeds), mortar for cost-effective building
  • Investigation and implementation of our expertises in building material behaviour during real applications: chemical resistance (sulphate resistance, alkali-silica reaction), weathering resistance (freeze-thaw and temperature change resistance)
  • Assessment of methods and investigations into the implementation of by-products of the power plant and metallurgy industry, such as fly ash, flue gas gypsum, silica fume. Also the recycling of fresh and used concrete
 Surveillance / Certification
  • Tests for Approvals for non standardised building products such as, building products with special effect on the properties of concrete, wall building materials for masonry of high thermal or sound insulation, materials for special applications
  • Surveillance of building materials and their production, of constructions of a work and building maintenance
  • Certification of building materials
  Determination of the thermal resistance of thermal insulation products using a supervised hot plate apparatus with two specimens  

Determination of the thermal resistance of thermal insulation products using a supervised hot plate apparatus with two specimens

Consulting service
  • Advising companies, public bodies and private clients such as building material manufacturers or suppliers, associations, construction supervising authorities, German Institute for Civil Engineering (DIBt), German Railway plc (Deutsche Bahn AG) and Airport plc (Flughafen AG) on the selection of appropriate building materials
  • Advisory service on the application of special building materials, such as lightweight concrete, high performance concrete, sprayed concrete, masonry units and masonry mortar for high thermal insulation purposes, sound protection bricks, special insulators, special plaster, recycled aggregates
  • Protection and maintenance of building construction and building facilities:
    Consultation on the selection of the appropriate building material, drafting of remedial designs in cooperation with the unit “protection of buildings, monument conservation”
Cooperation in committees
  • Cooperation in German and European committees and expert groups (e.g. DIN, DIBt and CEN)
  • Lectures, practical demonstrations, supervised final year projects (diploma)
  • Publications and lectures

Determination of the creep behaviour of masonry

Investigations at a double-shell wall

Determination of the creep behaviour of masonry Investigations at a double-shell wall
 Special facilities
  • Alkali-silica reaction lab for glass fibres
  • Autoclave to determine the expansion behaviour of constituents in concrete
  • Facilities to produce and test concrete
  • Electro-chemical laboratory
  • Outdoor exposure rig to determine the frost resistance of concrete
  • Frequency analyser to determine structural disturbances in concrete
  • Water and gas permeability facilities for testing porous building materials
  • Facility to determine the water absorption of natural stone under high pressures
  • Facilities and chambers to simulate climate to determine the stress caused by changing dew, moisture, dryness, rain and sun exposure
  • Creep frames for mineral building materials
  • Laser particle size equipment to determine the fineness of binders and other powdery material
  • Load- and displacement-controlled machine for compression and tensile testing
  • Test equipment for microscopic analysis of the air void distribution in hardened concrete
  • Measuring device to determine the dynamic stiffness and the airflow resistance of impact sound insulating board
  • 40°C fog chamber
  • Testing laboratories for mechanical and physical binder and mortar examinations
  • Test rigs for hollow floors, dry floor pavements and floors
  • Mercury intrusion porosimeter to determine the pore distribution in porous building materials
  • Skid resistance testing equipment for road concrete
  • X-ray diffraction and X-ray fluorescence analysis for mineralogical and chemical examinations
  • Non-destructive concrete testing by ultrasonic pulse velocity (U.P.V.)
  • Shear strength test rig for masonry
  • Specific sound impedance measurement device for heat insulators
  • Nitrogen adsorption analysis using the BET-method to determine the pore structure
  • Wear facility to simulate loads of fork lifts
  • Abrasion testing machines to determine the wear resistance of concrete and natural stone
  • Heat conducting test rig for tiles and external/internal walls
Further information
 Contact person


Mrs. M. Schulz

 ++49 (0)711/685-62248

Head of Department

Mrs. Dipl.-Ing. C. Laskowski

 ++49 (0)711/685-62252
 ++49 (0)711/685-66828

Mr. Dr.-Ing. M. Stegmaier

 ++49 (0)711/685-62256
 ++49 (0)711/685-66828


Concrete Technology, Rehabilitation

Mrs. Dipl.-Ing. C. Laskowski

Mr. Dr.-Ing. C. Öttl

 ++49 (0)711/685-62252

 ++49 (0)711/685-62257

Material Behavior and Modelling

Mr. Dr.-Ing. O. Mielich

Mrs. Dr.-Ing. J. Bosnjak

 ++49 (0)711/685-62261
 ++49 (0)711/685-63377

Building Envelope, Energy Efficiency,
Floor Constructions

Mr. Dr.-Ing. M. Stegmaier

Mr. Dr. rer. nat. T. Popp

 ++49 (0)711/685-62256
 ++49 (0)711/685-62281