Flexural Characteristics of Functionally Graded Fiber-Reinforced Cementitious Composite with Polyvinyl Alcohol Fiber

Journal of Composites Science

Takumi Koba¹  Kohei Yamada²  Toshiyuki Kanakubo³ 

[1] Degree Programs in Systems and Information Engineering, University of Tsukuba, Tsukuba 305-8577, Japan;Department of Engineering Mechanics and Energy, University of Tsukuba, Tsukuba 305-8577, Japan;Division of Engineering Mechanics and Energy, University of Tsukuba, Tsukuba 305-8577, Japan;

关键词: fiber-reinforced cementitious composite;    functionally graded material;    bending test;    fiber volume fraction;    section analysis;    bridging law;   

DOI  :  10.3390/jcs5040094

来源: DOAJ

【 摘 要 】

The objective of this study is to investigate the flexural characteristics of functionally graded fiber-reinforced cementitious composite (FG-FRCC) concerning the fiber volume fraction (V_f) varying in layers and the layered effect in bending specimens. The FG-FRCC specimens, in which V_f increases from 0% in the compression zone to 2% in the tensile zone, are three-layered specimens using polyvinyl alcohol (PVA) FRCC that are fabricated and tested by a four-point bending test. The maximum load of the FG-FRCC specimens exhibits almost twice that of homogeneous specimens, even when the average of the fiber volume fraction in the whole specimen is 1%. The result of the section analysis, in which the stress–strain models based on the bridging law (tensile stress–crack width relationship owned by the fibers) consider the fiber orientation effect, shows a good adaptability with the experiment result.

【 授权许可】

Unknown