Experimental and Numerical Analysis of the Compressive and Shear Behavior for a New Type of Self-Insulating Concrete Masonry System

Mohamad, Abu-Bakre Abdelmoneim Elamin; Chen, Zhongfan

doi:10.3390/app6090245

Cited by 19 publications

(6 citation statements)

References 24 publications

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“…Therefore, their compressive strength is determined in this particular direction, according to the methodology presented in the standard [ 4 ]. It is less common for masonry to work in compression at a different angle from the joints [ 5 , 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Strength Parameters of Clay Brick Walls with Various Directions of Force

et al. 2021

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The study analyzes the anisotropy effect for ceramic masonry based on experimental tests of samples made of 25 × 12 × 6.5 cm3 solid brick elements with compressive strength fb = 44.1 MPa and cement mortar with compressive strength fm = 10.9 MPa. The samples were loaded in a single plane with a joint angle that varied from the horizontal plane. The load was applied in a vertical direction. The samples were loaded at angles of 90°, 67.5°, 45°, 22.5°, and 0° toward the bed joints. The most unfavourable cases were determined. It was observed that the anisotropy of the masonry significantly influences the load-bearing capacity of the walls depending on the angle of the compressive stresses trajectory. Approximation curves and equations for compressive strength, Young’s modulus, and Poisson’s coefficient were proposed. It was observed that Young’s modulus and Poisson’s ratio will also change depending on the trajectory of compressive stresses as a function of the joint angle. Experimental tests allowed to determine the failure mechanism in prepared specimens. The study allowed to estimate the masonry strength with the load acting at different angles toward the bed joints.

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Section: Introductionmentioning

confidence: 99%

Strength Parameters of Clay Brick Walls with Various Directions of Force

et al. 2021

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“…The CDP criterion is used for defining non-linearity in quasi-brittle materials like concrete, mortar, rock, ceramic etc. However, smeared crack masonry has also been modelled using CDP criterion by [20] and [33]. Masonry wall when subjected to any lateral force produces bending in vertical/horizontal plane depending on the support condition [3].…”

Section: Non-linear Model Of the Wallmentioning

confidence: 99%

Blast Vulnerability of Multi-Storey Masonry Infill Reinforced Concrete Frames

Shamim¹,

Ahmad²,

Khan³

2021

cea

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The prototype or experimental study of blast effect on structures is not always possible due to high risk of life and environmental wellbeing. However, advancement in computational science had made it possible to solve such complex and risky problems. Researchers in the past few decades have presented ample computational and numerical studies on blast effect on masonry structure using deterministic approach. The studies have neglected the effect of various uncertainties that may perhaps occur during an actual blast scenario. Therefore, in present study probabilistic Finite Element (FE) analysis was performed on three statistically stable masonry infill RC (Reinforced Concrete) frames having single (G+0), two (G+1) and three (G+2) storey levels respectively to arrive at the blast fragility curves. The probability of failure was computed based on the inelastic tension damage curves developed for the masonry. The effect of scaled distance and different storey levels on blast vulnerability of masonry infill RC frame walls are investigated through these fragility curves. The results indicate a noteworthy effect of scaled distance and storey levels on the blast resistance of the structure. Frame G+0 is found to be comparatively more vulnerable against the blast load effect than other multi-storey frames. The critical value of scaled distance (Z critical ) corresponding to PF 90% in panel P1 was found as 6.67m/kg 1/3 , 4.81m/kg 1/3 and 4.66m/kg 1/3 respectively of frames G+0, G+1 and G+2; in panel P2 was found as 4.3m/kg 1/3 and 4.6m/kg 1/3 respectively of frames G+2 and G+3 and; in panel P3 was found as 4.32 m/kg 1/3 of frame G+3. It is also observed that RC frame is negligibly affected with respect to the masonry panel in terms of blast load mitigation.

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“…Table 2 shows the average value of the compressive strength for the masonry materials used in SCMSW specimens while Table 3 presents the properties of the insulation material (expanded polystyrene (EPS) foam) which was inserted in the units. Additional details and description of the materials and methods of testing are reported in the published study [15]. …”

Section: Materials Propertiesmentioning

confidence: 99%

“…Figure 2. Self-insulating concrete masonry unit (SCMU) configurations: (a) block; and (b) half-block units [15]. EPS: expanded polystyrene.…”

Section: Materials Propertiesmentioning

confidence: 99%

Experimental Studies on the Behavior of a Newly-Developed Type of Self-Insulating Concrete Masonry Shear Wall under in-Plane Cyclic Loading

Mohamad

Chen

2017

Applied Sciences

Self Cite

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Abstract:This study aimed to investigate the inelastic behavior of a newly-developed type of self-insulating concrete masonry shear wall (SCMSW) under in-plane cyclic loading. The new masonry system was made from concrete blocks with special configurations to provide a stronger bond between units than ordinary concrete masonry units. A total of six fully-grouted SCMSWs were prepared with different heights (1.59 to 5.78 m) and different vertical steel configurations.The developed masonry walls were tested under in-plane cyclic loading and different constant axial load ratios. In addition, the relationship between the amount of axial loading, the amount of the flexural reinforcement and the wall aspect ratios and the nonlinear hysteretic response of the SCMSW was evaluated. The results showed that the lateral load capacity of SCMSW increases with the amount of applied axial load and the amount of vertical reinforcement. However, the lateral load capacity decreases as the wall aspect ratio increases. The existence of the boundary elements at the SCMSW ends increases the ductility and the lateral load capacity. Generally, the SCMSW exhibited predominantly flexural behavior. These results agreed with those reported in previous research for walls constructed with ordinary units.

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Experimental and Numerical Analysis of the Compressive and Shear Behavior for a New Type of Self-Insulating Concrete Masonry System

Cited by 19 publications

References 24 publications

Strength Parameters of Clay Brick Walls with Various Directions of Force

Strength Parameters of Clay Brick Walls with Various Directions of Force

Blast Vulnerability of Multi-Storey Masonry Infill Reinforced Concrete Frames

Experimental Studies on the Behavior of a Newly-Developed Type of Self-Insulating Concrete Masonry Shear Wall under in-Plane Cyclic Loading

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