Journal of Yangtze River Scientific Research Institute ›› 2022, Vol. 39 ›› Issue (6): 127-132.DOI: 10.11988/ckyyb.20210186

• HYDRAULIC STRUCTURE AND MATERIAL • Previous Articles     Next Articles

Effect of PVA Fiber on Abrasion Resistance of Hydraulic Concrete

ZHAO Yang, SUN Hai-yan, WANG Fu-lai, DONG Xin-yue, LIANG Rong-chuang   

  1. College of Water Resource and Hydraulic Power Architecture,Yunnan Agriculture University,Kunming 650201, China
  • Received:2021-03-04 Revised:2021-06-04 Online:2022-06-01 Published:2022-06-30

Abstract: In order to improve the abrasion resistance of hydraulic structures, we investigated into the influence of volumetric content of PVA fiber on the strength and abrasion resistance of hydraulic concrete at different curing ages, and also analyzed the micro-morphology of PVA fiber-added concretes. Compared with baseline group, the concrete samples added with 0.2% PVA fiber in volumetric content boasts larger compressive strength, splitting tensile strength, and abrasion resistance strength, up by 20.8%, 33.2%, and 108.4%, respectively, yet meanwhile smaller wearing depth and mass wear rate, down by 34.2% and 3.9%, respectively. Micro-morphology analysis reveal that the PVA fiber is well dispersed in the concrete matrix and distributed in random directions when its volumetric content is 0.2%. In association with SEM analysis, we can conclude that PVA fiber of suitable dosage would enhance the strength and abrasion resistance of hydraulic concrete remarkably.

Key words: hydraulic concrete, PVA fiber, volumetric content, abrasion resistance, splitting tensile strength, micro-morphology

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