Fundamental properties and durability of slope protection spray mortar reinforced with bamboo fibers

Authors

  • Kazuo Fujiyoshi Kankyo Bosai Co., Ltd., 1-57 Akui-cho, Tokushima 770-0046, Japan
  • Takao Ueda Inst. of Science and Engineering, Tokushima University, 2-1 Minamijyosanjima-cho, Tokushima 770-8506, Japan
  • Masayuki Tsukagoshi Faculty of Engineering, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan

DOI:

https://doi.org/10.14311/APP.2022.33.0181

Keywords:

adhesion strength, bamboo fiber, cyclic wet and dry condition, fly ash, resistance against freezing and thawing, spray mortar, vinylon fiber

Abstract

In order to enhance resistance against cracking and durability, short fibers such as steel and organic fibers have been conventionally mixed into spray mortar used for slope protection. In this research, fundamental properties of bamboo-fiber-mixed spray mortar were examined by laboratory tests. The mechanical properties of spray mortar containing bamboo fibers were examined under cyclic wet and dry conditions along with its resistance against freezing and thawing by a spray test. It was confirmed that 0.75% mixture of bamboo fibers in spray mortar most successfully improved mechanical properties and durability. These include adhesion strength to the base surface following exposure to cyclic wet/dry conditions and overall resistance against freezing and thawing. In addition, higher compressive strength and adhesion strength to the base surface were achieved by further mixing in vinylon fibers or fly ash in combination with bamboo fibers.

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Published

2022-03-03

How to Cite

Fujiyoshi, K., Ueda, T. ., & Tsukagoshi, M. . (2022). Fundamental properties and durability of slope protection spray mortar reinforced with bamboo fibers. Acta Polytechnica CTU Proceedings, 33, 181–187. https://doi.org/10.14311/APP.2022.33.0181