Durability of pultruded GFRP tubes subjected to seawater sea sand concrete and seawater environments

被引：78
作者：
Bazli, Milad [1 ]
Zhao, Xiao-Ling [2 ]
Bai, Yu [1 ]
Raman, R. K. Singh [3 ,4 ]
Al-Saadi, Saad [4 ]
Haque, Asadul [1 ]
机构：
[1] Monash Univ, Dept Civil Engn, Clayton, Vic, Australia
[2] UNSW Sydney, Dept Civil & Environm Engn, Sydney, NSW 2052, Australia
[3] Monash Univ, Dept Mech & Aerosp Engn, Clayton, Vic, Australia
[4] Monash Univ, Dept Chem Engn, Clayton, Vic, Australia
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 245卷
基金：
澳大利亚研究理事会;
关键词：
Seawater sea sand concrete; Pultruded GFRP tube; Durability; Concrete filled FRP tube; Harsh environments; LONG-TERM DURABILITY; HARSH ENVIRONMENTS; REINFORCING BARS; SUSTAINED LOAD; BEHAVIOR; PERFORMANCE; WATER; BASALT; CFRP; CONFIGURATION;
D O I：
10.1016/j.conbuildmat.2020.118399
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents a study on the durability of pultruded GFRP tubes subjected to seawater sea sand concrete (SWSSC) and seawater environments. Environmental conditions, time and temperature of conditioning, and the tube thickness were the studied parameters. Tensile and compressive strength tests were conducted to investigate the mechanical properties of tubes after conditioning. SEM and micro-CT were used to investigate the microstructural properties, degradation mechanisms and damage levels. Finally, models were proposed to predict the long-term performance of GFRP tubes under different conditions using Arrhenus theory. The results showed that SWSSC is significantly harsher condition for GFRPs compared to seawater. A reduction factor is recommended for tensile strength and compressive strength of GFRP tubes exposed to SWSSC and seawater environments. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：23
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