Anchor System for Tension Testing of Large Diameter GFRP Bars

Carvelli, Valter; Fava, Giulia; Pisani, Marco Andrea

doi:10.1061/(asce)cc.1943-5614.0000027

Cited by 41 publications

(25 citation statements)

References 3 publications

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“…Such a constitutive detail is important on embankments and levee strengthening projects design, as well as a reference feature for all the applications of the material to deep foundations and tunnelling works [10]. An example of high-strength GFRP 20 mm rod on a tensile test [2] is reported below (Fig. 11).…”

Section: Gfrp Main Features For Soil Nailsmentioning

confidence: 99%

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River embankment strengthening by non-metallic nails: overview on a permanent soil nailing for flood protection

Natoli¹,

Admiraal²,

Wit³

et al. 2017

Innov. Infrastruct. Solut.

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River embankments, levees, and coastal dikes are often subject to important remediation and ground improvement works. Such actions will become increasingly important in the future: we have to consider the strategic position of such structures along urban shorelines and waterways together with the ongoing sea-level rising process. In this paper, the application of a permanent soil nailing on a long channel levee in Vianen (The Netherlands) is reported. The project was executed by a new developed but solid ground support method design, based on non-metallic glass fibre-reinforced polymer soil nails. It was featured, in addition, by other important challenges: a limited installation space setting, a vibration-free drilling method with strong noise reduction. Quick and easy installation, bending potential, materials non-degradable on long term, and potential of easy future cuts/new drillings are all keystones of the project.

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Section: Gfrp Main Features For Soil Nailsmentioning

confidence: 99%

“…Two GFRP bars are mounted on a spacer system (gray) with a grouting hose inside (light green) Fig. 11 Results example of tensile tests on a stress/strain plot: glass fibre rod diameter 20 mm [2] 15 kg. Each single flat bar was secured by a gripping clavette cone blocking head, guaranteed up to 60 kN tensile load.…”

Section: High Length Soil Nails: Vianen Projectmentioning

confidence: 99%

River embankment strengthening by non-metallic nails: overview on a permanent soil nailing for flood protection

Natoli¹,

Admiraal²,

Wit³

et al. 2017

Innov. Infrastruct. Solut.

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“…This makes BFRP bars more vulnerable in the area of the anchorage, where, because of wedge devices typically used for steel tendons, strong lateral pressures are likely to be applied. Alternative technological solutions to be applied to fibre composite bars were proposed by Reda Taha and Shrine [19], Al-Mayah et al [20], Carvelli et al [21], Schmidt et al [22] and Crosset et al [9]. The transfer length of composite pre-stressing reinforcement was investigated by Ehsani et al [23] (aramid and carbon), Soudki et al [24], Mahmoud et al [25] and Lu et al [26] (carbon), Fava et al [27] and Yan et a.…”

Section: Introductionmentioning

confidence: 99%

Full-scale testing and numerical analysis of a precast fibre reinforced self-compacting concrete slab pre-stressed with basalt fibre reinforced polymer bars

Lago

Taylor

Deegan³

et al. 2017

Composites Part B: Engineering

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Steel-free pre-stressed reinforced concrete may be used in aggressive environments to increase the durability of structural elements and to limit the carbon footprint by replacing steel with high-strength fibre composites. The design of a 10-m long steel-free precast fibre-reinforced concrete slab, pre-stressed with basalt-fibre reinforced polymer (BFRP) bars and shear-reinforced with glass-fibre reinforced polymer bars, is presented in this paper. Non-linear viscoelastic and elastic-plastic models have been employed for the prediction of the service and ultimate limit state flexural behaviour, respectively.Preliminary tests on the employed materials and a 3-point load test on the slab element are presented, together with indications on its manufacturing process. The proposed numerical analysis is validated against the experimental results.

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“…The performance of GFRP is anisotropic, with excellent axial tensile strength but low transverse compressive strength and shear strength, which is the key problem to be solved when studying the anchorage system. Jia Xin et al [5] used steel sleeve filling with epoxy resin in the free-end as one anchoring method when conducting adhesive performance test of mortar anchor; Huang Zhihuai [13] developed a threaded coupling off steel fixture in 80mm length; Carvelli [14] designed a wedge-shaped anchor. All of those results have solved anchoring problems of GFRP anchor to some extent.…”

Section: Introductionmentioning

confidence: 99%

The Model Test on the Anchoring Performance of GFRP Anti-Floating Anchor with Base Floor

Bai¹,

Zhang²,

Chen³

et al. 2017

dtmse

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ABSTRACT:In order to solve the external anchorage problem of GFRP (glass fiber reinforced plastics) anti-floating anchors, a new anchorage system-nutpallet anchorage was proposed. Based on self-designed pulling test indoor with large structure, external anchorage bearing behavior of nut-pallet anchorage of GFRP anti-floating anchors was studied. The external anchorage deformation (slippage) and the ultimate capacity were also monitored during the test. The results show that the failure modes of the GFRP anti-floating anchors are pulled out. Under the condition of C25 concrete and the GFRP anti-floating anchors diameter with 28 mm, other conditions remain unchanged, the anchorage length is only changed, the limit supporting capacity of the external anchorage length with 30d is 384 kN, the maximum slippage is 8.98 mm, the generalized efficiency coefficient of external anchorage is 0.890, the generalized average bond strength is 5.20 MPa; the limit supporting capacity of the external anchorage length with 15d is 267 kN, the maximum slippage is 5.13 mm, the generalized efficiency coefficient of external anchorage is 0.619, the generalized average bond strength is 7.24 MPa. The average bond strength between the GFRP anti-floating anchors and the concrete reduces along with the increase of external anchorage length. Under the counter-pulled loads of each level, the generalized average bond strength between the GFRP anti-floating anchors and the concrete reduces along with the increase of test sample both sides slippage quantity. Finally, the generalized average bond strength increasing rate decreases along with the increase of slippage quantity unceasing.

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Anchor System for Tension Testing of Large Diameter GFRP Bars

Cited by 41 publications

References 3 publications

River embankment strengthening by non-metallic nails: overview on a permanent soil nailing for flood protection

River embankment strengthening by non-metallic nails: overview on a permanent soil nailing for flood protection

Full-scale testing and numerical analysis of a precast fibre reinforced self-compacting concrete slab pre-stressed with basalt fibre reinforced polymer bars

The Model Test on the Anchoring Performance of GFRP Anti-Floating Anchor with Base Floor

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