Table X-ray diffractometer

• Subject Area: Construction Engineering and Architecture
• Term: Funded in 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 427130732

In recent years, the working group "Building Materials and Building Chemistry" of the Faculty of Civil Engineering at the Munich University of Applied Sciences has increasingly acquired and processed application-as well as fundamental research projects. The research focuses on the damage to reinforced concrete structures and their repair, as well as in the field of building chemistry and structural analysis. The requested large-scale X-ray diffraction analysis device represents a significant added value for the working group's research, as there is currently no possibility of analysis of crystalline substances in their compounds and the determination of minerals. Especially the minerals produced by the hydration of cement and the damage of cement stone have a significant influence on the durability of concrete or on the formation of damage mechanisms in concrete chemistry. The X-Ray diffraction (XRD) represents a significant appreciation of the working group's analytical possibilities.X-ray diffraction analysis is a method for studying crystalline phases whose particle size is too small for microscopic examinations. These phases can also be identified in complex multi-component systems based on their typical reflex sequence, as in the case with the strength-forming C-S-H phases of the cement stone. In addition, formulations of weakly structured substances can be created as separate phases for quantification. This method is known as "PONKCS" (ParEROr Not Known Crystal Structure). With the help of these methods, important insights can be gained regarding the hydration processes i.e. the hardening processes of cementous binders. This includes, for example, the influence of concrete additives (e.g. super-plasticisers, etc.) on the hydration course of cement. By means of in situ measurements, any structural change can be traced and documented during the cement hardening.

• DFG Programme: Major Research Instrumentation
• Major Instrumentation: Tisch-Röntgendiffraktometer mit Bragg-Brentano-Strahlengang, optimiert für den Einsatz in der Forschung
• Instrumentation Group: 4011 Pulverdiffraktometer
• Applicant Institution: Hochschule für angewandte Wissenschaften München
• Leader: Professor Dr. Christoph Dauberschmidt