TY - GEN
T1 - Experimental tests on discrete BFRP needles reinforced seawater sea-sand concrete-filled GFRP tubular stub columns
AU - Dong, Z. Q.
AU - Wu, G.
AU - Zhao, Xiao Lin
AU - Zhu, H.
N1 - Funding Information:
The authors gratefully acknowledge the financial support provided by the National Natural Science FoundationofChina(51908118),NaturalScienceFoundationofJiangsuProvince(BK20190369),and theAustralianResearchCouncil(ARC)throughanARCDiscoveryGrant(DP160100739).
Funding Information:
The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (51908118), Natural Science Foundation of Jiangsu Province (BK20190369), and the Australian Research Council (ARC) through an ARC Discovery Grant (DP160100739).
Publisher Copyright:
© APFIS 2019. All right reserved.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - This paper proposes a new type of tubular column, which is composed of the glass fibre-reinforced polymer (GFRP) tube and discrete basalt fibre-reinforced polymer (BFRP) needles reinforced seawater sea-sand concrete (SWSSC). The discrete BFRP needles, with an aspect ratio of 10.0, were cut from BFRP bar production scrap and mixed into fresh concrete to replace 20% of the coarse aggregates by volume. The axial compression properties of the tubular columns were tested. The test variables included the wall thickness of the GFRP tubes, the type of coarse aggregates, and the incorporation of BFRP needles or not. The test results showed that the inclusion of BFRP needles had litter adverse effects on the compressive strength: the peak axial stress reduced slightly by 2.5% for gravel concrete and 7.2% for coral concrete, and the corresponding peak axial strain increased by 17.8% and 17.0%, respectively. The compression performance of columns with GFRP tubes was improved significantly. Overall, the proposed BFRP needles reinforced SWSSC has promising application prospects in practical engineering, and its performance was further improved with GFRP tube confinement.
AB - This paper proposes a new type of tubular column, which is composed of the glass fibre-reinforced polymer (GFRP) tube and discrete basalt fibre-reinforced polymer (BFRP) needles reinforced seawater sea-sand concrete (SWSSC). The discrete BFRP needles, with an aspect ratio of 10.0, were cut from BFRP bar production scrap and mixed into fresh concrete to replace 20% of the coarse aggregates by volume. The axial compression properties of the tubular columns were tested. The test variables included the wall thickness of the GFRP tubes, the type of coarse aggregates, and the incorporation of BFRP needles or not. The test results showed that the inclusion of BFRP needles had litter adverse effects on the compressive strength: the peak axial stress reduced slightly by 2.5% for gravel concrete and 7.2% for coral concrete, and the corresponding peak axial strain increased by 17.8% and 17.0%, respectively. The compression performance of columns with GFRP tubes was improved significantly. Overall, the proposed BFRP needles reinforced SWSSC has promising application prospects in practical engineering, and its performance was further improved with GFRP tube confinement.
KW - BFRP needles
KW - Compression
KW - Coral aggregates
KW - GFRP tubular columns
KW - Seawater sea-sand concrete
UR - http://www.scopus.com/inward/record.url?scp=85085668415&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:85085668415
T3 - APFIS 2019 Proceedings - 7th Asia-Pacific Conference on FRP in Structures
BT - APFIS 2019 Proceedings - 7th Asia-Pacific Conference on FRP in Structures
A2 - Smith, Scott T.
A2 - Yu, Tao
A2 - Fernando, Dilum
A2 - Wang, Zhenyu
PB - APFIS Conference Series
T2 - 7th Asia-Pacific Conference on FRP in Structures, APFIS 2019
Y2 - 10 December 2019 through 13 December 2019
ER -