In-plane and out-of-plane structural performance of fully grouted reinforced masonry walls with varying reinforcement ratio – A numerical study

Noor-E-Khuda, Sarkar; Thambiratnam, David

doi:10.1016/j.engstruct.2021.113288

Cited by 9 publications

(4 citation statements)

References 34 publications

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“…Despite the extensive applicability of macro models to URM shear walls and buildings, particularly in the context of historic masonry structures, their potential for modeling RM shear walls and buildings has not been fully explored. Currently, available studies on RM shear walls based on the macro continuum models are limited [177,183,[227][228][229], focusing only on the static monotonic behavior. Furthermore, the effects of reinforcements have not been adequately considered, using either a smeared approach [177] or assuming perfect bonding between the reinforcing bar and block/grout [183,[227][228][229].…”

Section: Reinforced Masonry Shear Walls and Buildingsmentioning

confidence: 99%

“…Currently, available studies on RM shear walls based on the macro continuum models are limited [177,183,[227][228][229], focusing only on the static monotonic behavior. Furthermore, the effects of reinforcements have not been adequately considered, using either a smeared approach [177] or assuming perfect bonding between the reinforcing bar and block/grout [183,[227][228][229]. Other effects, such as nonlinear bond slip behavior and dowel effects, are typically neglected, even though these effects have been shown to significantly impact RM shear wall behaviors.…”

Section: Reinforced Masonry Shear Walls and Buildingsmentioning

confidence: 99%

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Towards Performance-Based Design of Masonry Buildings: Literature Review

Zeng,

2023

Buildings

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Masonry is among the most widely used construction materials around the world. Contemporary masonry buildings are primarily designed to comply with prescriptive building code regulations. In recent decades, performance-based design (PBD) has gained increasing attention and achieved significant success in critical structures or infrastructure systems. Instead of being the first mover, the masonry research and practice community can be a faster follower in response to the design paradigm shift towards PBD for masonry buildings. A reliable performance assessment of masonry buildings is of paramount importance in the PBD framework. To facilitate this, this paper presents an up-to-date comprehensive literature review of experimental and analytical studies with emphasis on their contributions to advancement towards performance assessment of masonry buildings. This review categorized available works into two sub-topics: (1) traditional unreinforced masonry and (2) modern reinforced masonry. In each sub-topic, studies focusing on the structural behaviors of masonry at the component-level (i.e., masonry wall) are discussed first, followed by the building system-level-related studies. Through this literature review, the current state of the art and remaining research gaps are identified to provide guidance for future research needs and to pave the way for implementing PBD in the masonry industry.

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Section: Reinforced Masonry Shear Walls and Buildingsmentioning

confidence: 99%

Section: Reinforced Masonry Shear Walls and Buildingsmentioning

confidence: 99%

Towards Performance-Based Design of Masonry Buildings: Literature Review

Zeng,

2023

Buildings

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“…Despite improper mixing design, grout use is considered an adequate solution to improve the mechanical properties of the structural masonry. To meet this goal successfully, structural masonry ensue needs to present some properties, as described [1], [2], [4], [13]- [15]: • compatibility between the materials and the components (grout↔block↔steel); • adequate adhesion between the concrete blocks and steel bars; • controlled effects of shrinkage; • slow rate of water absorption by the blocks; • adequate flowability to fill in the block without any additional imposition of vibration; • adequate mechanical strength (minimum of 15 MPa), depending on the place where it needs reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Characterization of fresh and hardened state properties of grouts for use in structural masonry

Mesquita

Barros

Franco

et al. 2024

Rev. IBRACON Estrut. Mater.

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Grout is a material usually applied to enhance the mechanical properties of structural masonry. As such, the demand for grout has been growing parallel to the demand for structural masonry. Without guidelines for grout mixing design, these products are often prepared on-site based on the same concepts used for preparing ordinary Portland cement-based concretes. Several grout properties still need to be investigated and understood due to this mixing-design approach, and consequently, the production of ecoefficient grouts is a secondary priority. Due to these obstacles, there is a demand for technical-scientific studies to aid with developing grout design guidelines. This work evaluates the rheological and hardened properties of grout compositions that simulate in-field conditions to show the inadequacy of the mixing design method and a way to understand this lack in the technology. The research investigates how the changes in the water-to-cement ratio, to increase the strength, would affect the fresh and hardened state properties of grouts for structural masonry. The grout’s mixing was done in a rheometer which made it possible to determine the rheological behaviour and parameters during mixing and under different shear conditions. Compressive strength, porosity, and air-permeability were evaluated in the hardened state. The results showed that compositions with more cement content does not necessarily reflect enhanced mechanical properties since the differences were not statistically significant, because other variables were also changed. The research findings suggest that the design method used in practice may not be appropriate and potentially result in the waste of cementitious materials and no-eco-friendly compositions.

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“…The social chaos caused by the earthquake can not be ignored, the seismic performance of RC structures with different reinforcement ratios is also hot topic [25,26]. Noor-E-Khuda et al [27] evaluate the effect of reinforcement ratios on the seismic performance of fully grouted reinforced masonry through FEA. Isufi et al [28] analyze the seismic performance of slab-column connections with different bending reinforcement ratios from 0.64% to 1.34%.…”

Section: Introductionmentioning

confidence: 99%

Effect of Reinforcement Forms on the Load Bearing Capacity of Prefabricated Box Culvert

Xu,

Wang,

Chen

et al. 2023

Advances in Civil Engineering

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Box culvert structure was an essential part of modern infrastructure. Due to the advantages of low pollution and convenient construction, the prefabricated box culvert (PBC) has been gradually utilized in engineering. However, the investigations on load bearing capacity of PBC in different reinforcement forms with same reinforcement ratios were still lack. In the present research, one PBC specimen was tested and discussed by the finite-element analysis (FEA) on load bearing capacity under four-point bending. The load bearing capacity of another three PBCs in different reinforcement forms with the same reinforcement ratios was discussed by the FEA. Results of experimental and numerical investigations showed that: (1) a number of flexural cracks were observed in the midspan bottom of upper slab of PBC, and finally shear failure was observed in bending–shear zone of upper slab of PBC; (2) the number of concrete cracking, plastic deformation of PBC, and stress of rebars reduced by increasing the area of tensile rebars in PBC with reducing the area of compressive rebars under same reinforcement ratios; (3) the ductility and load bearing capacity of PBC increased by increasing the area of tensile rebars with reducing the area of compressive rebars.

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In-plane and out-of-plane structural performance of fully grouted reinforced masonry walls with varying reinforcement ratio – A numerical study

Cited by 9 publications

References 34 publications

Towards Performance-Based Design of Masonry Buildings: Literature Review

Towards Performance-Based Design of Masonry Buildings: Literature Review

Characterization of fresh and hardened state properties of grouts for use in structural masonry

Effect of Reinforcement Forms on the Load Bearing Capacity of Prefabricated Box Culvert

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