Bond strength of tension lap splice specimens in UHPFRC

Lagier, Fabien; Massicotte, Bruno; Charron, Jean‐Philippe

doi:10.1016/j.conbuildmat.2015.05.009

Cited by 71 publications

(28 citation statements)

References 19 publications

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“…12 emphasizes the participation of the UHPFRC cover in tension around spliced bars to counterbalance the radial bursting pressure generated by the action of ribs. Similar results were obtained in lap splices with 35 mm bar diameter [11]. For each test, despite the initiation of macro cracks at the end of some face, which provoked the loss of strain gauge reading and are marked by a cross symbol in Fig.…”

Section: Steel Stress Ratio Versus Transverse Concrete Strainsupporting

confidence: 77%

“…These values are however significantly lower than those reported on UHPFRC obtained from pull-out tests in which bond stress values range between 35 and 70 MPa [17e20], as discussed by Lagier and Massicotte [11]. Due to the presence of compressive struts between the test support and reinforcing bar ribs, pull-out tests provide bond strength that are not related to the bond mechanism encountered in members in which both reinforcing bars and the surrounding concrete are in tension, such as lap splices.…”

Section: Introductionmentioning

confidence: 44%

“…Then, the splice length required to develop the bar yielding can be considerably reduced compare to current design requirement. In a previous study carried out by the authors [11], a 4% fibre dosage was found to be sufficient to achieve reinforcement yielding for a splice length of only 12 d b . However reaching yielding is not the sole criteria and providing a ductile lap splice failure mode would necessarily lead to a safer and more efficient design, which was entirely achieved using high fibre content UHPFRC.…”

Section: Bond Strengthmentioning

confidence: 93%

“…This softening behaviour can be attributed to fibre bridging effect. Detailed study on the splitting crack opening behaviour on similar specimen with UHPFRC can be found in Lagier et al [11]. All specimens show an outstanding damage tolerance during post-cracking propagation without any spalling of concrete (see Fig.…”

Section: Mode Of Failurementioning

confidence: 97%

“…However reaching yielding is not the sole criteria and providing a ductile lap splice failure mode would necessarily lead to a safer and more efficient design, which was entirely achieved using high fibre content UHPFRC. More detailed information about post-cracking behaviour on similar specimens can be found in Lagier et al [11].…”

Section: Bond Strengthmentioning

confidence: 98%

See 4 more Smart Citations

Experimental investigation of bond stress distribution and bond strength in unconfined UHPFRC lap splices under direct tension

Lagier

Massicotte

Charron

2016

Cement and Concrete Composites

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Section: Steel Stress Ratio Versus Transverse Concrete Strainsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 44%

Section: Bond Strengthmentioning

confidence: 93%

Section: Mode Of Failurementioning

confidence: 97%

Section: Bond Strengthmentioning

confidence: 98%

See 3 more Smart Citations

Experimental investigation of bond stress distribution and bond strength in unconfined UHPFRC lap splices under direct tension

Lagier

Massicotte

Charron

2016

Cement and Concrete Composites

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Development mechanism of plastic hinge in reinforced engineered cementitious composite beams under monotonic loading

Pan

et al. 2018

Structural Concrete

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Engineered cementitious composites (ECCs) are materials featuring strainhardening behavior with the formation of multiple cracks. When ECC is incorporated in structural applications such as beam, it is expected to significantly improve their mechanical performance. In this study, finite element analysis is performed to investigate the characteristics of the plastic hinge in reinforced ECC (RECC) beams. The plastic hinge lengths of RECC beams, involving rebar yielding zone, concrete crushing zone and curvature localization zone, are found to be much larger than those for reinforced concrete (RC) beams. Based on the above results, parametric studies on the plastic hinge lengths in RECC beams are conducted to study the influences of the tensile\compressive properties of ECC, yielding strength\hardening modulus\ultimate strain of tensile reinforcement, tensile\compressive reinforcement ratio and beam size. This theoretical study has shown that the existing empirical models for RC beams' plastic hinge length are not applicable to RECC beams which exhibit much longer plastic hinge length. A new empirical equation for predicting the plastic hinge lengths of RECC beams is thus proposed.

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Equivalent analytical modeling of adequate reinforcement noncontact lap splices under monotonic loads

Zhang

Chen

Feng

2019

Structural Concrete

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Lap splices constructional details are widely used for connecting prefabricated parts. They are usually located in regions where larger inelastic deformation capacity can be expected, such as the base of RC walls and beam-column joints. An equivalent analytical model of adequate reinforcement noncontact lap splices is first proposed in this study. The noncontact lap spliced reinforcement is simplified as continuous reinforcement with variable diameter combined with the equivalent stress-strain law. The method allows for monotonic yield and degradation of tension and compression noncontact lap splices. Parametric analysis is further performed to investigate the influence of lap splices details on the bearing capacity and deformation capacity. Finally, five shear wall finite element models are established to verify the equivalent modeling method. The proposed method can more accurately reflect the deformation capacity and bearing capacity of the noncontact lap splices region.

show abstract

Bond strength of tension lap splice specimens in UHPFRC

Cited by 71 publications

References 19 publications

Experimental investigation of bond stress distribution and bond strength in unconfined UHPFRC lap splices under direct tension

Experimental investigation of bond stress distribution and bond strength in unconfined UHPFRC lap splices under direct tension

Development mechanism of plastic hinge in reinforced engineered cementitious composite beams under monotonic loading

Equivalent analytical modeling of adequate reinforcement noncontact lap splices under monotonic loads

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