The influence of PVA content on the flexural behavior of engineered cementitious composite using local materials

  • Nguyen Tat Thang Faculty of Civil and Industrial Construction, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Nguyen Cong Thang Faculty of Building Materials, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Nguyen Van Tuan Faculty of Building Materials, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam http://orcid.org/0000-0001-7385-4400
  • Pham Sy Dong Faculty of Civil and Industrial Construction, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Vu Van Tham Faculty of Civil and Industrial Construction, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
  • Tran Minh Tu Faculty of Civil and Industrial Construction, Hanoi University of Civil Engineering, 55 Giai Phong road, Hai Ba Trung district, Hanoi, Vietnam
Keywords: engineered cementitious composite, PVA fiber, flexural behavior, fly ash, silica fume

Abstract

Engineered cementitious composite (ECC) creates many potential civil engineering applications due to its outstanding ultimate tensile strain capacity (normally exceeding 2%) compared to conventional concrete and fiber reinforced concrete. The high tensile ductility of ECC is mainly influenced by fiber characteristics. In this study, the effect of polyvinyl alcohol (PVA) content, i.e. from 2 to 6% by vol. of concrete, on the flexural behavior of ECC with a desired compressive strength of over 60 MPa, in which fly ash and silica fume were selected as supplementary cementitious materials. The experimental results show that the addition of PVA fiber gives little influence on compressive strength but can significantly affect the flexural behavior of ECC. Besides the optimum fiber content, the ratio between the ultimate and first crack strength of ECC was also evaluated.

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Published
29-04-2022
How to Cite
Thang, N. T., Thang, N. C., Tuan, N. V., Dong, P. S., Tham, V. V., & Tu, T. M. (2022). The influence of PVA content on the flexural behavior of engineered cementitious composite using local materials. Journal of Science and Technology in Civil Engineering (STCE) - HUCE, 16(2), 55-64. https://doi.org/10.31814/stce.huce(nuce)2022-16(2)-05
Section
Research Papers