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The influence of notch depth on the fracture mechanics properties of polymer concrete

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Abstract

This research deals with unreinforced and fiber-reinforced Polymer Concrete (PC). Polymer Concrete is usually composed of natural aggregates such as silica sand, binded together with a thermoset resin, such as unsaturated polyester. In this paper it is reported the use of a direct method to calculate two size independent fracture parameters, the critical stress intensity factor, K Ic, and the critical crack tip opening displacement, CTODC, from experimental results of two different size single edge notched beams, 10 and 20 mm, subjected to three point bending under quasi-static loading condition. This method is called the Two Parameter Fracture Model (TPFM). Also the Fracture Energy, G f, of the specimens were measured to verify its size dependency. Epoxy and polyester resin specimens were studied and epoxy resin specimens reinforced specimens with short carbon and glass fibers were considered.

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Authors and Affiliations

  1. Departamento de Engenharia Mecânica e Gestão Industrial, Instituto de Engenharia Mecânica e Gestão Industrial, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal

    J.M.L. Reis & A.J.M. Ferreira

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  1. J.M.L. Reis
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  2. A.J.M. Ferreira
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Correspondence to A.J.M. Ferreira.

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Reis, J., Ferreira, A. The influence of notch depth on the fracture mechanics properties of polymer concrete. International Journal of Fracture 124, 33–42 (2003). https://doi.org/10.1023/B:FRAC.0000009302.36274.e9

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  • DOI: https://doi.org/10.1023/B:FRAC.0000009302.36274.e9

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