Affiliation:
1. UFPA: Universidade Federal do Para
2. UFPA ITEC: Universidade Federal do Para Instituto de Tecnologia
Abstract
Abstract
Background
Mortar is a building material with low tensile strength e fracture resistance. One method for improving these characteristics is to include synthetic fibers, such as carbon fibers, into the matrix.
Materials and methods
A thermomechanical numerical model for mortar reinforced with carbon fibers was created based on an experiment in the literature, where it was calibrated and validated. From this, damage mechanics were analyzed using XFEM; the material's stress intensity factor at 20°C, 250°, and 350°C were analyzed using FEM.
Results
The results for the numerical model using XFEM agree with the experiment. Regarding the Stress intensity factor, the highest value found was for room temperature, and the lowest was for 250°C.
Conclusion
The numerical methods presented can be used in thermomechanical models in mortar reinforced with carbon fibers, and the intensity factor behaves non-linearly with temperature change.
Publisher
Research Square Platform LLC
Reference28 articles.
1. Instrumented indentation based methods to assess fracture toughness (KIC) of self-compacting concrete: Influence of water to binder (w/b) ratio and type of concrete;Bouali A;Eng Fract Mech,2022
2. Anisotropic damage model for concrete and other quasi-brittle materials;Vilppo J;Int J Solids Struct,2021
3. Deng Y, Zhang Z, Shi C, Wu Z, Zhang C (2022) Steel fiber–matrix interfacial bond in ultra-high performance concrete: A review. Engineering
4. Influence of polypropylene and steel fibers on the mechanical properties of ultra-high-performance fiber-reinforced geopolymer concrete;Aisheh YIA;Case Stud Constr Mater,2022
5. Tensile behavior of textile-reinforced composites made of highly ductile fiber-reinforced concrete and carbon textiles;Zhang M;J Building Eng,2022