Subproject B4

Statistical validation of testing data concerning load bearing behavior of multi-filament-yarn in concrete

Director

Prof. Dr.-Ing. Manfred Curbach

Staff

Dipl.-Ing. Kai Schicktanz

Aim

The goal of this research subproject is the consideration of statistical properties of test results from subprojects A1, A5, B1 and C1 investigating the load bearing behavior of multi-filament-yarn in concrete. The project is a interlink between the experimental focused subprojects, such as A1, A5, B1 and C1 and the more theoretical justified projects, such as B3 or C2. The subproject B4 on one hand supports the theoretical projects to develop the theoretical models and on the other hand supports the experimental projects to detect correlated data and to detects limitation of the test set-up and design together new tests. Last but not least the extension of the theoretical models for consideration of random uncertainties is part of the subproject as well. Major tools for the investigation of the test data are the evaluation of measures of central tendency, measures of dispersion of data, distribution of data (goodness of fit tests), identification of outliers, censored data or the identification of multimodal data. In addition the visual monitoring of tests or the discussion with engineers carrying out the tests is part of the project and can give data about drawbacks in the test set-up. All the achieved data can be used to identify system changes. The goal of identifying system changes is the minimization of data dispersion caused by testing. In addition major parameters influencing the load bearing behavior can be detected. This is the basis for proofing the theoretical modes and for future optimization of the material.

Results

The subproject started its activities on July 1st 2005. First results will be available in the near future.

Publications

2012

• Hartig, J.; Jesse, F.; Schicktanz, K.; Häußler-Combe, U.: Influence of experimental setups on the apparent uniaxial tensile load-bearing capacity of Textile Reinforced Concrete specimens. Materials and Structures 45 (2012) 3, S. 433-446 - doi:10.1617/s11527-011-9775-0

2012

2011

2009

• Jesse, F.; Schicktanz, K. & Curbach, M.: Obtaining Characteristic Material Strength of Textile Reinforced Concrete (TRC) from Laboratory Tests. Djausal, A.; Alami, F. & Naaman, A. E. (Hrsg.): 9th International Symposium on Ferrocement and Thin Reinforced Cement Composites (Ferro-9), 18-20 May 2009, Bali, Indonesia. S. 305-318

2008

• Hartig, J.; Häußler-Combe, U.; Schicktanz, K.: Influence of bond properties on the tensile behaviour of Textile Reinforced Concrete. In: Cement and Concrete Composites 30 (2008) 10, p. 898-906 – doi:10.1016/j.cemconcomp.2008.08.004
• Häußler-Combe, U.; Hartig, J.; Schicktanz, K.: An Approach for the Modelling of the Uniaxial Behaviour of Textile Reinforced Concrete. In: Schrefler, B. A.; Perego, U. (eds): 8th World Congress on Computational Mechanics (WCCM8) and 5th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008) (CD of Abstracts), 30.06.-04.07.2008, Venice (Italy). Abstract 1415

2007

• Hartig, J.; Häußler-Combe, U.; Schicktanz, K.: Modelling the uniaxial load-bearing behaviour of textile reinforced concrete with a lattice approach including damage. In: Triantafillou, T.C. (ed): Proceedings of the 8th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures (Book of short papers), 16.07.-18.07.2007, Patras (Greece). University of Patras, pp. 628-629
• Hartig, J.; Häußler-Combe, U.; Schicktanz, K.: Modelling the uniaxial load-bearing behaviour of textile reinforced concrete with a lattice approach including damage. In: Triantafillou, T.C. (ed): Proceedings of the 8th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures (CD of full papers), 16.07.-18.07.2007, Patras (Greece). University of Patras, Paper 17-2
• Hartig, J.; Häußler-Combe, U.; Schicktanz, K.: A lattice model approach to the uniaxial behaviour of Textile Reinforced Concrete. In: Carpinteri, A.; Gambarova, P.G.; Ferro, G.; Plizzari, G.A. (eds): Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-6). Volume 2: Design, Assessment and Retrofitting of RC- Structures, 17.06.-22.06.2007, Catania (Italy). London : Taylor & Francis, pp. 745-752
• Hartig, J.; Häußler-Combe, U.; Schicktanz, K.: Zur Modellierung des einaxialen Zugtragverhaltens von textilbewehrtem Beton. In: Curbach, M.; Häußler-Combe, U.; Mechtcherine, V. (Hrsg.): Beiträge zum 48. Forschungskolloquium des DAfStb, 19.10.2007, Dresden. Technische Universität Dresden, S. 73-86

2006

• Curbach, M.; Schicktanz, K.; Jesse, F.; Hartig, J.: Stochastische Eigenschaften der Zugfestigkeit freier und zementös eingebetteter Filamentbündel aus AR-Glas. In: Neue Bauweisen – Trends in Statik und Dynamik, Tagungsband zum 10. Dresdner Baustatik Seminar, Technische Universität Dresden, 29.9.2006. S. 91-100
• Häußler-Combe, U.; Hartig, J.; Schicktanz, K.: Numerische Modellierung des einaxialen Zugtragverhaltens von textilbewehrtem Beton. In: Neue Bauweisen – Trends in Statik und Dynamik, Tagungsband zum 10. Dresdner Baustatik Seminar, Technische Universität Dresden, 29.9.2006. S. 251-260

2005

• Curbach, M.; Proske, D.; Köckritz, U.: Statistical properties of strength of glass filaments and textile reinforced concrete. In: Glassfiber Reinforced Concrete Association (GRCA) Congress November 2005, Hongkong. (eingereicht)