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Properties Of Concrete

This paper presents a review of the principal developments in functionally graded materials (FGMs) with an emphasis on the recent work published since 2000. Diverse areas relevant to various aspects of theory and applications of FGM are reflected in this paper. They include homogenization of particulate FGM, heat transfer issues, stress, stability and dynamic analyses, testing, manufacturing and design, applications, and fracture. The critical areas where further research is needed for a successful implementation of FGM in design are outlined in the conclusions. DOI: 10.1115/1.2777164

https://web.mst.edu/~vbirman/papers/Modeling%20and%20Analysis%20of%20FGM_Review_2007.pdf

Modeling and Analysis of Functionally Graded Materials and Structures

https://ira.lib.polyu.edu.hk/bitstream/10397/5409/1/01%20Analysis-oriented%20models.pdf

Analysis-oriented stress–strain models for FRP–confined concrete

Effect of corner radius on the performance of CFRP-confined square concrete columns: Test

Effect of cross-sectional aspect ratio on the strength of CFRP-confined rectangular concrete columns

Unified stress–strain model of concrete for FRP-confined columns

Effect of load eccentricity on the stress–strain relationship of FRP-confined concrete columns

The interfacial bond parameters are quantified and modeled in this work through experimental and analytical studies. A database comprising 628 shear tests of externally-bonded fiber reinforced polymer (FRP) joints is built for model development. A newly derived closed-form solution is used for identification of bond parameters by matching the analytical solution with test results. Factors that affect the bond parameters are identified and configurations of the models are determined through analytical reasoning. Coefficients of the models are subsequently derived by regression analyses. It is found that the FRP-to-concrete width factor, which has been modeled as a function of FRP-to-concrete width ratio only in all existing bond strength models, should also be a function of concrete strength. A new model for the width factor as a function of both the width ratio and concrete strength is developed, which leads to more accurate and rational bond strength and fracture energy models.

Yu-Fei Wu

Papers

Effect of corner radius on the performance of CFRP-confined square concrete columns: Test

Effect of cross-sectional aspect ratio on the strength of CFRP-confined rectangular concrete columns

Unified stress–strain model of concrete for FRP-confined columns

Effect of load eccentricity on the stress–strain relationship of FRP-confined concrete columns

Quantification of Bond-Slip Relationship for Externally Bonded FRP-to-Concrete Joints