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BT / MT
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Development and optimization of the hole pattern for the backing masonry unit made of “Elbbackstein”
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- Literature research on the existing configuration (shape/topology) of the hole pattern for backing bricks – inner leaf brick in cavity wall
- Development of the hole pattern for backing bricks made of earth masonry, suitable for the newly developed “Elbbackstein”
- Implementation of key parameters for optimizing the developed hole pattern using the ATOM tools (topology and shape optimization) in Abaqus
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Truong-Diep Hasenbank-Kriegbaum E-Mail start: anytime in 2026
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BT / MT
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Literature review on the state of the art of cyclic tests on masonry walls for determining earthquake load-bearing capacity
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- Literature review on load-bearing earthen brick construction
- Research on the in-plane load-bearing capacity of conventional masonry and highlighting the differences to earth masonry
- Compilation of various cyclic tests (boundary conditions, setups) on masonry walls for determining earthquake load-bearing capacity
- Proposal of an optimized test setup for planned large wall tests
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Nicola Zeitler E-Mail start: immediately
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BT / MT
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Research on existing calculation methods for the in-plane load-bearing capacity of masonry walls according to international literature
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- Literature review on load-bearing earthen brick construction
- Compilation of the state of the art on design methods from international standards for the in-plane load-bearing capacity of conventional masonry under earthquake loading
- Research on proposed calculation methods for the earthquake load-bearing capacity of masonry walls from current research literature
- Comparison and identification of differences in the design concepts according to EC 8 for various building materials
- Examination of the transferability of calculation methods for conventional masonry to earth masonry
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Nicola Zeitler E-Mail start: immediately
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BT / MT
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Evaluation of various international calculation methods for the earthquake load-bearing capacity of masonry walls based on comparative calculations of experiments from the literature
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- Literature review on load-bearing earthen brick construction
- Literature review on the in-plane load-bearing capacity of masonry walls
- Comparison of various design methods by recalculating experiments and FEM studies for masonry walls under earthquake loading from the literature
- Examination of calculation methods from international standards and current research literature (considering research literature on conventional masonry walls and earth masonry walls)
- Investigation and comparison of different influencing parameters such as damping, ductility, and behavior factors
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Nicola Zeitler E-Mail start: immediately
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BT / MT
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Development of an alkali-activated binder based on cold-fired earthen bricks, incorporating secondary raw materials
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- Literature review on the alkali activation of clay-based materials and development of a requirements profile for suitable alkali activators
- Selection and characterization of suitable alkali activators and cold-fired earthen bricks
- Planning and conducting experimental investigations with systematic variation of raw materials and mixture compositions
- Development and optimization of a suitable binder formulation, as well as evaluation and scientific interpretation of the experimental results
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Ranwu Xu E-Mail start: immediately
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BT / MT
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Investigation of the Transferability of Conventional Evaluation Methods to Earth Thin-Layer Mortar, Considering Consistency, Workability, and Mechanical Testing Procedures
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- Compilation of existing evaluation methods for consistency and workability of standard and thin-layer mortars in conventional masonry
- Experimental investigations on the workability and material properties of earth thin-layer mortar
- Prediction of the transferability of existing mortar evaluation methods to earth thin-layer mortar
- Literature review on the boundary conditions and setups of compression, tensile, and flexural tensile tests on conventional and earth mortars
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Ranwu Xu E-Mail start: immediately
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BT / MT
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Implementation of wall experiments: experimental investigation of earthen masonry walls under compressive stress
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- Literature review on the compressive behavior of masonry with various mortar layer thicknesses and on earthen materials
- Assistance in constructing earthen masonry walls
- Research on conventional measurement techniques and Digital Image Correlation (DIC); installation of measurement equipment before and during the test
- Assistance in conducting the wall tests
- Evaluation of measurement results from conventional measurement techniques and comparison of experimental load-bearing capacities with calculated values based on an analytical design approach for earthen masonry walls under compressive stress
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Ranwu Xu E-Mail start: October 2026
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BT / MT
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Numerical analyses of clay masonry wall elements under compressive stress
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- Literature review on the compressive behavior of masonry
- Development of a finite element (FE) model for simulating wall elements under compressive stress using simplified micromodeling in Abaqus
- FEM analysis of various material models for bricks, mortar, and brick-mortar interaction; development of an FEM model for estimating load-bearing capacities; and comparison of the results with analytical reference calculations
- Comparison and calibration of the numerical model based on existing experimental data
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Ranwu Xu E-Mail start: March 2027
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BT / MT
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Assessment of Reclaimed Concrete Elements Using Non-Destructive Experimental Investigation Methods
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- Literature review on non-destructive experimental methods for evaluating the condition of reinforced concrete elements
- Analysis of relevant parameters for assessing material properties and the reusability of reclaimed concrete structures
- Development of a testing plan for the application of non-destructive methods to reclaimed concrete components
- Participation in the execution of selected non-destructive investigations
- Evaluation and assessment of the investigation results with regard to the effectiveness of the applied methods for structural assessment
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Adrian Twardella E-Mail start: immediately
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BT
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Analysis of the state of the art of demountable timber-concrete composite components for use in residential and commercial construction
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- Literature review on timber-concrete composite (TCC) systems and their structural design
- Investigation of current design principles in terms of structural performance, sustainability and effectiveness
- Analysis of existing joining technologies in terms of their dismountability
- Presentation and evaluation of current dismountable TCC systems with regard to the design for deconstruction
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Adrian Twardella E-Mail start: immediately
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BT / MT
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State of the art and development of concepts for assessing the condition of structural components over their service life in building construction
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- Literature review on existing procedures and methods for assessing the condition of structural components over their service life
- Analysis of relevant factors influencing the structural condition and load-bearing capacity of structural components over their service life (e.g. material ageing, environmental influences, application)
- Comparison and evaluation of existing assessment approaches and systems
- Development of concepts for the systematic recording, assessment and documentation of the condition of structural components
- Design of experimental investigations to analyse the relevant factors influencing the condition of structural components
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Adrian Twardella E-Mail start: immediately
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BT / MT
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State of the art and development of monitoring concepts for condition assessment of (demountable) building components
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- Literature review on existing monitoring approaches and technologies in the construction industry, especially in building construction
- Analysis of technical and functional requirements for monitoring solutions for demountable components
- Evaluation of existing sensor technologies and data acquisition methods regarding their suitability for condition assessment
- Development of concepts for continuous monitoring of component condition
- Design of an exemplary monitoring concept for demountable components, taking deconstruction and reuse into account
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Adrian Twardella E-Mail start: immediately
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BT
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Analysis of the application of fiber optic strain measurement in the field of solid construction
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- Literature research on the state of the art for fiber optic strain measurement, especially regarding application examples in solid construction
- Research on areas of application for laboratory tests and structural
monitoring in bridge construction - Research on the influence of different fiber types and evaluation methods
- Comparison of applications and recommendations for action (application,
robustness, measurement accuracy, etc.) - Elaboration of first test series
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Robert Haack E-Mail start: immediately
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BT / MT
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Shear Design on existing concrete Bridges and evaluation of design proposals using databases
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- Literature research on the topic of shear force verification of existing bridges, with a focus on level 2 and level 4 verifications of the
recalculation guideline BEM ING Part 2 - Development/expansion of a shear force database for the validation of design approaches with new worldwide shear force tests
- Extension of the database with relevant parameters for the scientific methods of the extended approaches of level 4
- Development of an evaluation methodology in Python environment
- Implementation of a design approach in Python
- Evaluation of different design approaches on the compiled data sets
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Robert Haack E-Mail start: immediately
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