Title:
Compression Behavior of Seawater and Sea-Sand Concrete Reinforced with Fiber and Glass Fiber-Reinforced Polymer Bars
Author(s):
Jikai Zhou, Xu He, and Wei Shen
Publication:
Structural Journal
Volume:
117
Issue:
4
Appears on pages(s):
103-114
Keywords:
axial and eccentric compression; bearing capacity; crack width; glass fiber-reinforced polymer (GFRP) bars; polypropylene (PP) fibers; seawater and sea-sand concrete (SSC)
DOI:
10.14359/51723519
Date:
7/1/2020
Abstract:
To avoid the damage caused by chloride attack and improve the toughness of concrete, glass fiber-reinforced polymer (GFRP) bars and short fibers could be used in seawater and sea-sand concrete (SSC). In this paper, SSC columns reinforced with polypropylene (PP) fibers and GFRP bars under axial and eccentric compression were tested. The bearing capacity of axial and small eccentric compression column and the crack width of eccentric compression column were theoretically analyzed. The research result showed: for axial compression testing, the increase of longitudinal reinforcement ratio had little influence on the test results, and the contribution of GFRP bars to the ultimate bearing capacity for axial compression columns was small. For eccentric compression testing, eccentricity had a significant influence on the mechanical properties of the test columns, while the reinforcement ratio had little effect. In addition, PP fibers could restrain crack development in SSC effectively. The theoretical result of the crack width of eccentric compression columns and the ultimate bearing capacity of axial and small eccentric compression columns agreed well with the experimental data.
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