Related Experiment Video
Updated: Nov 22, 2025

Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
Published on: June 27, 2018
Modeling of Bridging Law for Bundled Aramid Fiber-Reinforced Cementitious Composite and Its Adaptability in Crack
Daiki Sunaga1, Takumi Koba1, Toshiyuki Kanakubo1
1Department of Engineering Mechanics and Energy, University of Tsukuba, 1 Chome Tennodai, Ibaraki 305-8573, Japan.
Abstract:
Tensile performance of fiber-reinforced cementitious composite (FRCC) after first cracking is characterized by fiber-bridging stress-crack width relationships called bridging law. The bridging law can be calculated by an integral calculus of forces carried by individual fibers, considering the fiber orientation. The objective of this study was to propose a simplified model of bridging law for bundled aramid fiber, considering fiber orientation for the practical use. By using the pullout characteristic of bundled aramid fiber obtained in the previous study, the bridging laws were calculated for various cases of fiber orientation. The calculated results were expressed by a bilinear model, and each characteristic point is expressed by the function of fiber-orientation intensity. After that, uniaxial tension tests of steel reinforced aramid-FRCC prism specimens were conducted to obtain the crack-opening behavior and confirm the adaptability of the modeled bridging laws in crack-width evaluation. The experimental parameters are cross-sectional dimensions of specimens and volume fraction of fiber. The test results are compared with the theoretical curves calculated by using the modeled bridging law and show good agreements in each parameter.
Related Concept Videos
Fiber Reinforced Concrete
Bending of Members Made of Several Materials
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Tensile Strength Considerations of Concrete
The dimensions and shape of a concrete specimen...
Behavior of Concrete Under Compressive Load
As the concrete specimen fractures under...
Design of Prismatic Beams for Bending
Relation Between Tensile Strength and Compressive Strength of Concrete

