This study investigates the tensile behavior of anchor pull-out tests from super early
age concrete(less than 12h) by finite element(FE) software ANSYS Workbench. In
previous experiment, several series of pull-out tests were finished and analyzed. In
each per hour, different speeds(1mm/s, 0.2mm/s, 0.1mm/s and 0.833mm/s) were
evaluated, getting the results about correlation of pull-out force and displacement(F-D
curve). It is difficult to evaluate the specific development of tensile strength in super
young concrete, due to the super plasticity that makes itself soft and unstable. The
first step of this study is to collect relevant empirical formula, theoretical varying
material properties with time and pull-out force of experimental applied anchors.
Comparison of simulation analysis results and empirical formulas determines whether
the establishment of the finite element model and adapted constitutive model of
known natural hardened concrete(NHC) are valid or not. The second procedure is that
the material properties of NHC are replaced by different age values and modified until
getting the same simulation results as experiment outcome. The propose of this paper
is to investigate a more accurate modified formula to describe the development of
tensile behavior in super early age concrete:1. Introduction
2. Background
2.1 Modes of failure
2.2 A new failure mode
2.3 Finite Element Numerical Simulation
3. Research Questions
4. Aims/Objectives of the Research
5. Proposed Research Method
5.1 Previous Empirical theory
5.1.1 Cubic Compressive strength of Early Age Concrete
5.1.2 Tensile Strength of Early Age Concrete
5.1.3 Modulus of Elasticity in Early Age Concrete
5.1.4 Prediction of pull-out maximum force to headed studs from concrete
5.2 Pervious Experiment
5.3 Numerical Simulation
6. Significance/Contribution to the Discipline
7. Experiment Program
7.1 Experiment Setup
7.2 Experiment Result
8. Numerical simulation and analysis
8.1 Material Properties
8.2 Modelling Setup
8.3 The first pull-out test
8.4 Comparison Results at different stages
9. Discussion and Results
10. Summary and Conclusion
11. Recommendation for future studies
12. References
13. Appendix
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:87474 |
| Date | 18 October 2023 |
| Creators | Pan, Zengrui |
| Contributors | Hochschule für Technik, Wirtschaft und Kultur |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/acceptedVersion, doc-type:masterThesis, info:eu-repo/semantics/masterThesis, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
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