期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 93, 期 -, 页码 1059-1066出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2015.05.044
关键词
GFRP; B-GFRP; Soil nail; Large diameter; Loading rate; Corrosion
资金
- National Natural Science Foundation of China [41472240]
- government of Guangdong province
- Ministry of education of China [2009B09060011]
- State Key Laboratory for Geomechanics & Deep Underground Engineering [SKLGDUEK1211]
In this study, the end anchorage device for large diameter FRP bar was firstly developed, based on which the effect of loading rate on the direct tensile mechanical properties of 25 mm diameter GFRP bars was tested, and the anticorrosion properties of a newly developed type of FRP bar, the basalt-glass fiber reinforced polymer (B-GFRP) bars with different thicknesses of basalt FRP protecting layers (0, 1,3 and 5 mm) were investigated. The results show that with the increase of loading rate, the tensile strength and elongation ratio of GFRP bar increase considerably, while the elastic modulus remains roughly constant. The addition of BFRP protecting layer is also proved to be an effective way to enhance the resistance of GFRP bars to the chemical attacks. (C) 2015 Elsevier Ltd. All rights reserved.
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