Binders and Concrete Additions

Head:

Dr.-Ing. Anne Heisig

Investigations with fresh and hardened mortar:

• According to current regulations (e.g. DIN EN 196 , DIN EN 1015)
• Determination of air void content in fresh mortar, density and consistency
• Soundness according to Le Chatelier
• Determination of setting times
• Determination of dynamic Young’s modulus
• Evolution of hard mortar properties (compressive strength, flexural strength)

Performance of physical investigations:

• Mercury intrusion porosimetry, porosity and pore size distribution
• Particle size distribution with laser granulometry
• Particle size distribution with air jet sieving
• Specific surface according to Blaine or BET

Special testing methods and investigations:

• Determination of rheological properties (rotation viscosimeter)
• Mineralogical investigations with X-ray diffraction, quantitative analysis according to Rietveld
• ASR investigations according to the Alkali Guide Line
• Elution, leaching (DEV S4, tank test)
• Mobilization of environmentally relevant substances according to pH static method
• Permeability
• Heat flow calorimetry
• Differential scanning calorimetry / thermogravimetry

Approved testing laboratory for approval and external monitoring tests:

• Concrete additions (silica fume, fly ash)
• Concrete admixtures
• Cement

Approved testing laboratory for testing aggregate according to the Alkali Guide Line, Part 3