Study of flexural response of engineered cementitious composite faced masonry structures

Singh, S. B.; Patil, Richa; Munjal, Pankaj

doi:10.1016/j.engstruct.2017.07.089

Cited by 28 publications

(9 citation statements)

References 9 publications

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“…Because of its excellent tensile performance, ECC can be used in strengthening unreinforced masonry walls [16,[21][22][23], reducing the extensive amount of transverse reinforcements in beam-column joints of rigid-framed bridges, enhancing the joint seismic resistance and reducing reinforcement congestion and construction complexity [24][25][26][27]. ECC can also be used in hydraulic structures for its good durability [2,16,28], highway engineering for its ability of withstanding large deformations from heavy loading and temperature variations [29], in hot arid coastal climatic condition structures [30], in lightweight building facade and pavement [31], in pavement overlay to extend the service life [32] and in impact and blast resistant protective panels [16].…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of ECC-concrete composite beams reinforced with steel bars

Ashour

et al. 2018

Construction and Building Materials

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This paper presents analytical technique and simplified formulas for the calculations of cracking, yield and ultimate moments of different cases as well as deflections of ECC-concrete composite beams reinforced with steel bars. The technique is based on the simplified constitutive models of materials, strain compatibility, perforce bond of materials and equilibrium of internal forces and moment. Experimental testing of eleven ECC-concrete composite beams reinforced with steel bars is also presented. All beams tested had the same geometrical dimensions but different steel reinforcement strength and ECC thickness. The proposed formulas showed good agreement with the experimental results of various moment values and deflections. A parametric analysis shows that yield and ultimate moments increase with the increase of concrete strength in case of compression failure but, essentially, remain unchanged in case of tensile failure. With increasing the tensile resistance, for example by increasing ECC height replacement ratio, reinforcement ratio, strength of steel reinforcement and ECC, ultimate curvature and energy dissipation increase in case of tensile failure and decrease in case of compressive failure. On the other hand, ductility and energy dissipation ratio decrease with the increase of reinforcement ratio and strength, but, essentially, remain unchanged with increasing the height replacement ratio and strength of ECC.

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Section: Introductionmentioning

confidence: 99%

Flexural behavior of ECC-concrete composite beams reinforced with steel bars

Ashour

et al. 2018

Construction and Building Materials

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“…However, little research has focused on numerical simulation based on macro-modelling approach on strengthening of masonry structures with ECC. Recently, Singh, Patil and Munjal (2017) investigated the ECC-strengthened masonry beams based on the macro-mechanics approach, and the presented macro-modelling approach has shown good agreement with the experimental results. The above study on retrofitting and strengthening of masonry walls with ECC shows that more research work on burnt clay brick masonry walls subjected to out-of-plane loading is required to be carried out.…”

Section: Introductionmentioning

confidence: 82%

Out-of-plane response of ECC-strengthened masonry walls

Munjal

Singh

2020

Journal of Structural Integrity and Maintenance

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This paper focuses on the flexural behavior of masonry walls strengthened with precast engineered cementitious composite (ECC) sheet. The walls were subjected to out-of-plane static loading and analyzed using ABAQUS. For the validation of numerical results, four masonry walls of size 762 × 480 × 230 mm were cast using burnt clay bricks and cement mortar. Out of four, two masonry walls were strengthened with precast ECC sheet using epoxy as adhesive, and the remaining two acted as control specimens. The validation of numerical results with the experimental results shows that the model can effectively capture the nonlinear behavior of masonry and ECC to predict the strength and failure mechanism. The influence of mesh size on the numerical results is also reported. Further, a parametric study has been carried out to observe the effect of several parameters such as percentage of ECC reinforcement ratio, span/depth (L/d) ratio and width/thickness (b/h) ratio of the strengthened masonry walls. This study reveals that the precast ECC sheet increases the load-carrying capacity and ductility of brick masonry walls and hence demonstrates its performance as a strengthening element for brick masonry structures.

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“…The material properties (yield stress versus inelastic/cracking strain) used in the numerical modeling were obtained from material characterization tests performed by Munjal and Singh [34] and are listed in Table 5, except for the following assumptions:…”

Section: Materials Modelmentioning

confidence: 99%

“…Singh et al [34] investigated the out-of-plane performance of a URM sandwich-like ECC-based beam coupled with epoxy material. It was discovered that using prefabricated ECC boosts the stiffness and deformability of masonry beams.…”

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confidence: 99%

Cyclic Behavior of Masonry Shear Walls Retrofitted with Engineered Cementitious Composite and Pseudoelastic Shape Memory Alloy

Tabrizikahou

Kuczma

Łasecka-Plura

et al. 2022

Sensors

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The behavior of masonry shear walls reinforced with pseudoelastic Ni–Ti shape memory alloy (SMA) strips and engineered cementitious composite (ECC) sheets is the main focus of this paper. The walls were subjected to quasi-static cyclic in-plane loads and evaluated by using Abaqus. Eight cases of strengthening of masonry walls were investigated. Three masonry walls were strengthened with different thicknesses of ECC sheets using epoxy as adhesion, three walls were reinforced with different thicknesses of Ni–Ti strips in a cross form bonded to both the surfaces of the wall, and one was utilized as a reference wall without any reinforcing element. The final concept was a hybrid of strengthening methods in which the Ni–Ti strips were embedded in ECC sheets. The effect of mesh density on analytical outcomes is also discussed. A parameterized analysis was conducted to examine the influence of various variables such as the thickness of the Ni–Ti strips and that of ECC sheets. The results show that using the ECC sheet in combination with pseudoelastic Ni–Ti SMA strips enhances the energy absorption capacity and stiffness of masonry walls, demonstrating its efficacy as a reinforcing method.

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Study of flexural response of engineered cementitious composite faced masonry structures

Cited by 28 publications

References 9 publications

Flexural behavior of ECC-concrete composite beams reinforced with steel bars

Flexural behavior of ECC-concrete composite beams reinforced with steel bars

Out-of-plane response of ECC-strengthened masonry walls

Cyclic Behavior of Masonry Shear Walls Retrofitted with Engineered Cementitious Composite and Pseudoelastic Shape Memory Alloy

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