Interfacial bond behaviour between hybrid carbon/basalt fibre composites and concrete under dynamic loading

2020 ◽  
Vol 99 ◽  
pp. 102569 ◽  
Author(s):  
Cheng Yuan ◽  
Wensu Chen ◽  
Thong M. Pham ◽  
Hong Hao ◽  
Jian Cui ◽  
...  
2016 ◽  
Vol 51 (6) ◽  
pp. 783-795 ◽  
Author(s):  
Júlio C Santos ◽  
Luciano MG Vieira ◽  
Túlio H Panzera ◽  
André L Christoforo ◽  
Marco A Schiavon ◽  
...  

The work describes the manufacturing and testing of novel hybrid epoxy/carbon fibre composites with silica micro and poly-diallyldimethylammonium chloride-functionalised nanoparticles. A specific chemical dispersion procedure was applied using the poly-diallyldimethylammonium chloride to avoid clustering of the silica nanoparticles. The influence of the various manufacturing parameters, particles loading, and mechanical properties of the different phases has been investigated with a rigorous Design of Experiment technique based on a full factorial design (2131). Poly-diallyldimethylammonium chloride-functionalised silica nanoparticles were able to provide a homogenous dispersion, with a decrease of the apparent density and enhancement of the mechanical properties in the hybrid carbon fibre composites. Compared to undispersed carbon fibre composite laminates, the use of 2 wt% functionalised nanoparticles permitted to increase the flexural modulus by 47% and the flexural strength by 15%. The hybrid carbon fibre composites showed also an increase of the tensile modulus (9%) and tensile strength (5.6%).


2020 ◽  
Vol 231 ◽  
pp. 117138 ◽  
Author(s):  
Wei Wei ◽  
Feng Liu ◽  
Zhe Xiong ◽  
Fei Yang ◽  
Lijuan Li ◽  
...  

2019 ◽  
Vol 817 ◽  
pp. 134-140 ◽  
Author(s):  
Giulia Misseri ◽  
Gianfranco Stipo ◽  
Stefano Galassi ◽  
Luisa Rovero

Textile Reinforced Mortars (TRM) include a series of innovative strengthening systems suitable for conservation interventions since inorganic matrixes, instead of polymeric resins, are employed. Recent research supported the definition of guidelines on testing methods for TRM systems applied to masonry, but further investigation is needed to clear out the role played by the numerous factors affecting the strengthening capacity. In this study, an experimental campaign on basalt-fibre TRM systems was carried out. A series of tensile and single-shear bond tests are compared. Samples differ for fibre reinforcement ratio, textile layout and the number of textile layers, while the lime-based mortar matrix is the same for all specimens. For tensile tests, results show that, after a mortar-cracking phase, a third, substantially linear phase, during which the textile response is dominant, occurred for specimens failed both for textile tensile rupture and textile slippage. For shear bond tests, results showed that increasing the reinforcement ratio tightening textile mesh is not as beneficial as increasing textile layers, i.e. active bond surfaces.


1978 ◽  
Vol 13 (10) ◽  
pp. 2197-2204 ◽  
Author(s):  
J. N. Kirk ◽  
M. Munro ◽  
P. W. R. Beaumont

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.


2017 ◽  
Vol 165 ◽  
pp. 15-24 ◽  
Author(s):  
T. Bhat ◽  
E. Kandare ◽  
A.G. Gibson ◽  
P. Di Modica ◽  
A.P. Mouritz

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