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

Mohamad, Abu-Bakre Abdelmoneim Elamin; Chen, Zhongfan

doi:10.3390/app7050463

Cited by 3 publications

(4 citation statements)

References 10 publications

(15 reference statements)

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“…It should be noted that when compared with the experimental results, the theoretical capacity for traditional and precast test walls was overestimated on average by 14% and 7%, respectively. This could be explained by the fact that the reversed cyclic loading caused accumulated damage to the specimen, especially under high axial compression [25].…”

Section: Lateral Load Capacitymentioning

confidence: 99%

“…Displacement ductility is a measurement of the ability of the shear wall to deform in the elasto-plastic stage without significant degradation of strength. The appropriate definition of the shear wall's ductility has been discussed in the literature [23][24][25][26]. In this study, ductility is defined as the ratio between the top displacement corresponding to 0.85 F p in the post-peak stage and the yield displacement of the specimen.…”

Section: Displacement Ductilitymentioning

confidence: 99%

“…This could be explained by the fact that the reversed cyclic loading caused accumulated damage to the specimen, especially under high axial compression [25].…”

Section: Displacement Ductilitymentioning

confidence: 99%

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Experimental Investigation on the Seismic Behavior of Newly-Developed Precast Reinforced Concrete Block Masonry Shear Walls

Wang

2018

Applied Sciences

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Typically, a special type of concrete block with cleaning holes is used in the bottom layer of traditional reinforced masonry shear walls (RMSWs) for mortar cleaning and vertical rebar connection, which results in reduced integrity and weakened structural behavior. In this paper, a precast construction technology was introduced to overcome these shortcomings. The cleaning-hole blocks were eliminated in the newly-developed precast RMSWs. Quasi-static tests on two traditional and two precast fully grouted RMSWs were conducted. The results showed that the flexural capacity of precast walls exhibited about a 10% increase when compared to traditional RMSWs under the same axial compression. Precast RMSWs that failed in flexural mode showed favorable deformation capacity and the displacement ductility value corresponding to 15% strength degradation reached 4.9. The wall stiffness degraded rapidly to 50% of the initial stiffness, K 0 , at 0.2% drift and, at 0.5% drift, the corresponding stiffness decreased to about 21% K 0 at a more gradual rate. Furthermore, precast RMSWs exhibited significant energy dissipation capacity. The experiment suggests that precast RMSWs have a satisfactory seismic performance.

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Section: Lateral Load Capacitymentioning

confidence: 99%

Section: Displacement Ductilitymentioning

confidence: 99%

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Experimental Investigation on the Seismic Behavior of Newly-Developed Precast Reinforced Concrete Block Masonry Shear Walls

Wang

2018

Applied Sciences

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“…In order to improve the water resistance and durability of cast-in-place reinforced concrete underground silos from the perspective of applied science [16][17][18][19], and to improve the quality of internal grain storage, improving silo performance from the perspective of concrete materials is a popular research topic. Poonyakan et al [20] improved low thermal conductivity concrete using plastic wastes.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Plastic–Concrete Waterproof Walls of an Underground Granary Subject to Combined Bending Moment and Water Pressure

et al. 2022

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To investigate the mechanical properties of plastic–concrete silo walls in practice, the mechanical properties and failure mechanism under the combined bending moment and water pressure were analyzed through the uniform loading test, water pressure test, and numerical analysis. The influence of the connecting plate spacing, radius, and the waterproof plate thickness on the water pressure-bearing capacity were analyzed. The test results show that the chemical adhesive force exists between the waterproof plate and concrete and can resist 20 kPa. The displacement and strain of the waterproof plate increases significantly with the increment in water pressure. When the water pressure reached 85 kPa, the specimen was damaged due to shear failure. The established numerical model was validated by the test results. The numerical analysis results show that the specimen failure mainly depends on the bolt strength when the thickness of the waterproof plate is greater than 14 mm or the radius of the connecting plate is greater than 60 mm. The relation between the design parameters and the water pressure-bearing capacity was proposed. Compared with the waterproof plate thickness, the connecting plate spacing and radius have greater influence on the water pressure-bearing capacity.

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Experimental Studies on the Behaviors of New Energy‐Saving Concrete Self‐Insulating Load‐Bearing Block Wall under Low‐Cycle Cyclic Loading

Osman

Chen

2018

Advances in Materials Science and Engineering

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Masonry walls are usually designed to resist the effect of lateral and gravity loads resulting from wind or earthquake excitations. This research aimed at investigating the inelastic behavior of a new energy-saving concrete self-insulating load-bearing block wall (ECSLBW) under in-plane cyclic loading. To provide stronger bond between the concrete block units better than the ordinary concrete masonry units, a new masonry system of concrete blocks with special configurations was made. In this experiment, three new self-insulated block wall specimens were designed, manufactured, and tested. Furthermore, self-supporting structural column-ring beam structure system was used to observe the failure mode of the walls. Moreover, the mechanical properties and seismic indexes of the walls under lateral low-cyclic loading were analyzed, including hysteretic and skeleton curves, stiffness degradation, ductility, and energy losses. The results showed that the new energy-saving block wall can meet the seismic shear calculation under 8-degree rare earthquake and meet the antiseismic fortification target in 8-degree area. Furthermore, self-contained system can greatly improve the seismic shear capacity of the wall. Finally, the seismic shear capacity of the concrete column block masonry was calculated, and the technical application method of block masonry structure was recommended.

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

Cited by 3 publications

References 10 publications

Experimental Investigation on the Seismic Behavior of Newly-Developed Precast Reinforced Concrete Block Masonry Shear Walls

Experimental Investigation on the Seismic Behavior of Newly-Developed Precast Reinforced Concrete Block Masonry Shear Walls

Experimental and Numerical Investigation of Plastic–Concrete Waterproof Walls of an Underground Granary Subject to Combined Bending Moment and Water Pressure

Experimental Studies on the Behaviors of New Energy‐Saving Concrete Self‐Insulating Load‐Bearing Block Wall under Low‐Cycle Cyclic Loading

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