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Effects of Fiber Distribution and Content on Performance of Engineered Cementitious Composite (ECC)

  • Cementitious Materials
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Abstract

The 21 dog-bone specimens with different fiber contents and fiber distribution (random chopped fiber or directional continuous filament fiber bundles) were designed and tested under uniaxial tension using domestic PVA (polyvinyl alcohol) fiber. High fiber content exerted positive influences on cracking stress, peak stress and deformation capacity of specimens with random chopped fiber, compared with the decrease shown in cracking stress of specimens containing directional fiber bundles. There were multiple cracks in specimens containing directional fiber bundles, while only 1–2 typical cracks could be shown in chopped fiber specimens after being broken. Random chopped fiber connected more closely with matrix compared with that only part of fiber bundles could contact with matrix. Double-fold line model and parabolic model could be used simultaneously to fit well with the uniaxial tension constitutive relations of engineered cementitious composite (ECC). Although the performance of PVA produced in China can not reach to the same level of those from Japan, there exists certain practical value in engineering according to its contribution to deformability of structure.

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Authors and Affiliations

  1. Tongji University, Key Laboratory of Advanced Civil Engineering Materials Ministry of Education, Shanghai, 201804, China

    Xiaolu Guo  (郭晓潞)

  2. School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China

    Xiaolu Guo  (郭晓潞) & Sijia Wang

  3. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China

    Hongmei Zhang  (章红梅)

Authors
  1. Xiaolu Guo  (郭晓潞)
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  2. Sijia Wang
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  3. Hongmei Zhang  (章红梅)
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Corresponding author

Correspondence to Hongmei Zhang  (章红梅).

Additional information

Funded by the National Key Research and Development Program of China (No. 2019YFE0112600), the Science and Technology Innovation Action Plan of Shanghai of China (No. 19DZ1204900), and the Fundamental Research Funds for the Central Universities (Nos. 22120180087 and 2020QNA4018)

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Guo, X., Wang, S. & Zhang, H. Effects of Fiber Distribution and Content on Performance of Engineered Cementitious Composite (ECC). J. Wuhan Univ. Technol.-Mat. Sci. Edit. 36, 569–577 (2021). https://doi.org/10.1007/s11595-021-2446-2

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  • DOI: https://doi.org/10.1007/s11595-021-2446-2

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