scholarly journals Bond Performance of Sand-Coated BFRP Bars to Concrete

2019 ◽  
Vol 8 (10) ◽  
pp. 1330-1335
Keyword(s):  
Bond Strength ◽  
Test Results ◽  
Basalt Fibre ◽  
Bond Failure ◽  
Bond Behaviour ◽  
Bond Performance ◽  
Reinforced Polymer ◽  
Steel Bars ◽  
Fibre Reinforced Polymer ◽  
Average Bond

This paper presents an experimental study on the bond behaviour of sand-coated basalt fibre reinforced polymer (BFRP) bars and conventional steel bars of 10mm- diameter. The bond strength of these bars were determined according to ASTM D7913/D7913M-14 standards. The pullout specimens consisted of BFRP bars embedded in concrete cubes (200mm on each side) with the compressive strength of 40MPa were constructed. The pullout test results contain the bond failure mode, the average bond strength , the slip at the free and loaded end, and the bond stress-slip relationship curves.The test results showed that the bond strength of sand-coated BFRP bars was about 70% that of the steel bars.

Effect of loading rates on bond behaviour between basalt fibre-reinforced polymer bars and concrete

2020 ◽  
Vol 231 ◽  
pp. 117138 ◽  
Author(s):  
Wei Wei ◽  
Feng Liu ◽  
Zhe Xiong ◽  
Fei Yang ◽  
Lijuan Li ◽  
...  
Keyword(s):  
Basalt Fibre ◽  
Bond Behaviour ◽  
Loading Rates ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer

Study of the bond behaviour between basalt fibre-reinforced polymer bar/sheet and bamboo engineering materials

2019 ◽  
Vol 22 (14) ◽  
pp. 3121-3133 ◽  
Author(s):  
Qingfang Lv ◽  
Yi Ding ◽  
Ye Liu
Keyword(s):  
Composite Structures ◽  
Engineering Material ◽  
Basalt Fibre ◽  
Bond Behaviour ◽  
Failure Patterns ◽  
Reinforced Polymer ◽  
Laminated Bamboo ◽  
Fibre Reinforced Polymer ◽  
Engineering Materials ◽  
Material Composite

To improve practical application of modern bamboo structures, strengthening the bamboo engineering material is necessary to overcome insufficient stiffness. As an essential step in developing fibre-reinforced polymer–bamboo engineering material composite structures aimed at increasing the structural stiffness, the bonding behaviour at the interface of the fibre-reinforced polymer and bamboo engineering materials should be investigated in detail because currently there is a lack of research. In this article, bonding behaviour is studied between basalt fibre-reinforced polymer bar and bamboo engineering material including laminated and reconstituted bamboo and between basalt fibre-reinforced polymer sheets and laminated bamboo. Failure patterns are categorized, and the load–slip curves are discussed. Based on the failure pattern and strain variation, recommended bond lengths were proposed for the basalt fibre-reinforced polymer bar–bamboo engineering material and basalt fibre-reinforced polymer sheet–laminated bamboo composite specimens, respectively. In addition, a simplified three-phase bond–slip model was proposed for the basalt fibre-reinforced polymer bar–bamboo engineering material composite specimen.

scholarly journals Assessment of Compression strength of Concrete Columns Confined with Basalt Fibre Reinforced Polymer

2019 ◽  
Vol 278 ◽  
pp. 03001
Author(s):  
CHIADIGHIKAOBI Paschal Chimeremeze
Keyword(s):  
Compression Strength ◽  
Concrete Columns ◽  
Test Results ◽  
Test Program ◽  
Basalt Fibre ◽  
Concrete Core ◽  
Strength Enhancement ◽  
Reinforced Polymer ◽  
Concrete Blocks ◽  
Fibre Reinforced Polymer

Columns are the main load bearing element of a structure. Therefore, columns have an important function in many structures and can be vulnerable to exceptional loads. As structures age, the columns often have a lack of transverse reinforcement, which is unable to provide sufficient confinement to the concrete core or to prevent buckling of the longitudinal reinforcement which causes premature strength degradation of the column. The primary objectives of this research are to investigate the behaviour of axially loaded concrete columns confined with an obscure material in civil engineer for strengthening, basalt fibre reinforced polymer jacket (BFRP). This paper presents a test program that was done on concrete blocks confined with basalt fibre reinforced polymer (BFRP) and examination of its compression strength. The test results show that the strength enhancement of the concrete blocks consists of more ductile behaviour.

Mechanical and bond properties of new generation of carbon fibre reinforced polymer reinforcing bars for concrete structures

2002 ◽  
Vol 29 (2) ◽  
pp. 338-343 ◽  
Author(s):  
Brahim Benmokrane ◽  
Burong Zhang ◽  
Kader Laoubi ◽  
Brahim Tighiouart ◽  
Isabelle Lord
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Bond Strength ◽  
Concrete Structures ◽  
Reinforcing Bars ◽  
Reinforced Polymer ◽  
Steel Bars ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
New Generation

This paper presents laboratory test results on the mechanical properties and bond strength of new generation of carbon fibre reinforced polymer (CFRP) reinforcing bars used as nonprestressed reinforcement for concrete structures. Two types of CFRP reinforcing bars, namely, 9-mm-diameter CFRP ribbed bars and 9.5-mm-diameter CFRP sand-coated bars, were investigated. Tensile tests and pullout bond tests were conducted to evaluate the tensile properties and bond strength of the CFRP bars in comparison with that of the steel bar. Experimental results showed that the tensile stress-strain curves of the CFRP bars were linear up to failure. The ultimate tensile strength of the two types of CFRP bars was at least 1500 MPa, three times that of steel bars. The modulus of elasticity of two types of the CFRP bars was 128–145 GPa, about 65–75% that of steel. Furthermore, both types of the CFRP bars exhibited almost the same bond strength to concrete similar to steel bars. The minimum bond development length for the two types of CFRP bars seemed to be equal to about 20db for the sand-coated bars and 30db for the ribbed bars.Key words: fibre reinforced polymer (FRP), carbon FRP (CFRP), bar, mechanical properties, tensile strength, embedded length, pullout, bond strength, concrete structures.

Bond behaviour of recycled aggregate concrete with basalt fibre-reinforced polymer bars

2021 ◽  
Vol 256 ◽  
pp. 113078 ◽  
Author(s):  
Zhe Xiong ◽  
Wei Wei ◽  
Feng Liu ◽  
Chuying Cui ◽  
Lijuan Li ◽  
...  
Keyword(s):  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Basalt Fibre ◽  
Bond Behaviour ◽  
Aggregate Concrete ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer
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