Effect of Cyclic Damage on the Performance of RC Square Columns Strengthened Using Hybrid FRP Composites under Axial Compression

Chellapandian, M.; Jain, Saumitra; Prakash, Shamsher; Sharma, Akanshu

doi:10.3390/fib7100090

Cited by 25 publications

(7 citation statements)

References 28 publications

(49 reference statements)

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“…For the FE modeling of ECC members, a dynamic explicit integration procedure was used. Though the load application was made under the static scenario, a dynamic explicit procedure was used to achieve a close convergence of overall predictions [ 37 , 38 ]. The interface amid the ECC and steel was modeled using the option “embedded-region”, which does not consider the bond-slip effect.…”

Section: Resultsmentioning

confidence: 99%

Experimental and Numerical Investigation on the Shear Behavior of Engineered Cementitious Composite Beams with Hybrid Fibers

Maheswaran

Chellapandian²,

Sivasubramanian³

et al. 2022

Materials

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The shear behavior of innovative engineered cementitious composites (ECC) members with a hybrid mix of polyvinyl alcohol (PVA) and polypropylene (PP) fibers is examined. The overall objective of the investigation is to understand the shear behavior of ECC beams with different mono and hybrid fiber combinations without compromising the strength and ductility. Four different configurations of beams were prepared and tested, including 2.0% of PP fibers, 2.0% of PVA fibers, 2.0% of steel fibers and hybrid PVA and PP fibers (i.e., 1% PP and 1% PVA). In addition to the tests, a detailed nonlinear finite element (FE) analysis was accomplished using the commercial ABAQUS software. The validated FE model was used to perform an extensive parametric investigation to optimize the design parameters for the hybrid-fiber-reinforced ECC beams under shear. The results revealed that the use of hybrid PVA and PP fibers improved the performance by enhancing the overall strength and ductility compared to the steel and PP-fiber-based ECC beams. Incorporating hybrid fibers into ECC beams increased the critical shear crack angle, indicating the transition of a failure from a brittle diagonal tension to a ductile bending.

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Section: Resultsmentioning

confidence: 99%

Experimental and Numerical Investigation on the Shear Behavior of Engineered Cementitious Composite Beams with Hybrid Fibers

Maheswaran

Chellapandian²,

Sivasubramanian³

et al. 2022

Materials

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“…10. The modulus of elasticity of the longitudinal CFRP element is the same in tension and compression considering the linear material stress-strain relationship of CFRP elements [24], as per Fig. 11.…”

Section: Theoretical Analysismentioning

confidence: 99%

Experimental Work to Study the Strengthening Effect of SFR and CFRP on a Part or Whole of the Length of Slender RC Columns

Al-Helfi

Allami

2021

Civil and Environmental Engineering

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The This paper is focusses on the investigation of the strengthened column by steel-fibre-reinforced (SFR) and carbon fibre-reinforced polymer (CFRP) on a part or a whole of the length of the column under axial force, and to obtain the effective length, which is responsible for the increasing of the ability of the column to resist buckling. Seven samples were designed as slender reinforced columns with dimensions of 2000 mm length and cross-sections of 120 mm x 60 mm. It was shown that the strengthening of the middle half of the column length by SFR gave an ultimate load similar to the strengthening of the whole column with same material. Also, it was found that the column strengthened by SFR increased its ultimate load by 42.6 %, 42.1 % and 33.3 % for strengthened lengths of dimensions L, L/2 and L/3, respectively, compared to the non-strengthened column. The increase in ultimate load that could be borne by the column strengthened by CFRP were 53.0 % and 33.8 % for strengthened lengths of L and L/2, respectively, only. Interaction diagram had been depended as a theoretical analysis for slender concrete columns. The interaction diagram for the column strengthened by CFRP is greater than for the column strengthened by SFR, which in turn is greater than the non-strengthened column.

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“…Then in terms of column repair due to cyclic loading, the results showed that the cyclic load and the resulting damage caused a reduction in the axial stiffness of all damaged specimens. Hybrid column repair can restore stiffness and strength due to axial loads (Chellapandian M, 2019).…”

Section: Introductionmentioning

confidence: 99%

Análisis de capacidad de hormigón armado y columna compuesta en edificio de 7 pisos

Widayanto

Nurtjahjaningtyas²,

Faizeh³

2023

RIC

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To design columns with reinforced concrete material is often used in building construction so that reinforced concrete has several advantages, it is the availability of material, but require a large dimension in holding high capacity. To reduce the dimensions of the column structure can be designed with a composite structure. In this study, an analysis will be carried out to determine the difference in dimensions that can be provided by reinforced concrete columns and composite columns holding an equivalent nominal capacity. This analysis was carried out in a case study of the planning of a 7-story lecture building. The initial design of the column applied is a reinforced concrete column which will then be redesigned with a composite structure using a WF steel profile. Based on the results of the research analysis shows that in holding the nominal capacity equivalent, the dimensions of the composite column used are smaller than the reinforced concrete column. In addition, the volume requirement of the material is also lower, this indicates that the composite column is good enough to be applied in building planning.

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Effect of Cyclic Damage on the Performance of RC Square Columns Strengthened Using Hybrid FRP Composites under Axial Compression

Cited by 25 publications

References 28 publications

Experimental and Numerical Investigation on the Shear Behavior of Engineered Cementitious Composite Beams with Hybrid Fibers

Experimental and Numerical Investigation on the Shear Behavior of Engineered Cementitious Composite Beams with Hybrid Fibers

Experimental Work to Study the Strengthening Effect of SFR and CFRP on a Part or Whole of the Length of Slender RC Columns

Análisis de capacidad de hormigón armado y columna compuesta en edificio de 7 pisos

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