Size effect on reinforced concrete slabs under direct contact explosion

Cai, Runze; Yan-zhao, LI; Zhang, Chunxiao; Cao, Han; Qi, Hui; Mao, Jize

doi:10.1016/j.engstruct.2021.113656

Cited by 14 publications

(3 citation statements)

References 46 publications

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“…Size effect of a reinforced concrete slab under contact explosion. (Cai et al, 2022) TNT block, having direct contact with the reinforced concrete slab. TNT equivalent mass of 1.07g…”

Section: Namementioning

confidence: 99%

A comprehensive experimental review of strain rate, size effect, creep and confinement in concrete: Part III

Ahmed

Park

Voyiadjis

2023

International Journal of Damage Mechanics

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A comprehensive review of destructive testing techniques to understand concrete behavior is presented in this work. The main objective of this article is to summarize the literature from the last three decades related to the following topics: 1) the size effect in plain and reinforced concrete, 2) the crack estimation and propagation in concrete under various loading conditions, 3) the determination of material properties of concrete using triaxial testing techniques, 4) the behavior of concrete under creep and early age shrinkage which eventually affect the properties of concrete and lastly 5) the strain rate effect in concrete using various experimental techniques such as Split Hopkinson pressure bar, impact loading, drop hammer and the literature related to cyclic loading on concrete. The scope of the presented work is limited to destructive testing related to the topics defined above. To completely understand the behavior of material, at least three aspects must be required: the material’s theoretical basics, experimental validation, and numerical implementation. The authors presented the review articles related to theoretical basics and numerical implementation in parts I and II of this article. The presented work is part III, which is related to experimental work. In the upcoming section, the research related to specific topics is presented, and a summary is provided at the end of each section. Finally, the future works and the research directions are shown in the conclusion section.

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“…Size effect of a reinforced concrete slab under contact explosion. (Cai et al, 2022) TNT block, having direct contact with the reinforced concrete slab. TNT equivalent mass of 1.07g…”

Section: Namementioning

confidence: 99%

A comprehensive experimental review of strain rate, size effect, creep and confinement in concrete: Part III

Ahmed

Park

Voyiadjis

2023

International Journal of Damage Mechanics

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“…Only the vertical and transverse reinforcement was created for the columns and beams, and the role of hoop reinforcement was not considered, so the strength of the concrete columns was properly adjusted. The protective layer thickness of the reinforcement was not considered and was only arranged on the outside of the concrete columns [23,24]. The physical and mechanical parameters of the reinforcing steel and concrete are shown in Table 2.…”

Section: Structural Modeling Analysismentioning

confidence: 99%

Case Study on the Effect of Delay-Time Differences between Columns during Blasting Demolition of RC Structures with a Small Height-to-Width Ratio

et al. 2023

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Blasting demolition plays an important role in building demolition, and numerical-simulation methods can facilitate the optimization of blasting-demolition schemes. To study the influence of the delay-time differences between columns on the blasting and demolition effect of small-aspect-ratio reinforced concrete structures, a separated common node model of small-aspect-ratio structures was established through the finite element numerical simulation software ANSYS/LS-DYNA. The results showed that the delay-time differences between columns influenced the position of the plastic hinge of the structure, and the plastic hinge was located at the end of the back span beam when the delay-time difference was 0.1~0.3 s. The plastic hinge moves to the top of the back row of the columns of the first floor at 0.4~0.8 s and to the end of each span of the beams at 0.9 s. When the plastic hinge is at the end of the beam, the orientation axis is located at the bottom of the back row of the columns of the first floor. Moreover, when the plastic hinge is at the top of the back row of the columns of the first floor, the orientation axis is at the same position as the plastic hinge. The delay-time difference also affects the recoil distance of the structure as well as the height of the burst pile. To ensure that the structure can be successfully collapsed under the preconditions of disintegration, for a small height-to-width ratio structure, the appropriate intercolumn delay-time difference is 0.4~0.5 s.

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“…The results obtained the highest compressive strength with the use of 14M NaOH of 60.02 MPa. [23]explained in his research using type C fly ash which contains high calcium oxide, about 8-15% by weight. Calcium oxide plays a role in increasing the setting time to be fast.…”

Section: Wiremeshmentioning

confidence: 99%

Experimental Testing Comparison between Wiremesh Reinforcement and Plain Reinforcement on Concrete Slabs

Rasidi,

Dora,

Ningrum

2022

ajse

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The demand for building quality in the construction of structures is a major requirement. One part of the structure is the floor slab work. The main obstacle is when the floor slab is loaded there will be deflection and bending moment. Meanwhile, there are demands for shorter work times at lower costs. This study aims to analyze the concrete slab against the flexural strength test, compressive strength test and tensile strength test of plate reinforcement. In this study, plate reinforcement used plain steel with a diameter of 6 mm and 8 mm. Then the plain iron reinforcement plate was compared with the M6 and M8 wiremesh reinforcement plates. The results showed that the flexural strength test for plain iron reinforcing plates with a diameter of 6 mm was 45000 Kg.cm, while for a concrete slab with wiremesh M6 reinforcement it was 42500 Kg.cm then for reinforcement with a diameter of 8 mm it was 32500 Kg.cm while wiremesh M8 was 57500 Kg. .cm. This shows that the concrete slab with wiremesh reinforcement is better able to accept the load, as well as better moment capacity in bending, compressive and tensile tests compared to conventional slabs. Keywords: Concrete Slabs, Wiremesh Reinforcement, Plain Reinforcement

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Size effect on reinforced concrete slabs under direct contact explosion

Cited by 14 publications

References 46 publications

A comprehensive experimental review of strain rate, size effect, creep and confinement in concrete: Part III

A comprehensive experimental review of strain rate, size effect, creep and confinement in concrete: Part III

Case Study on the Effect of Delay-Time Differences between Columns during Blasting Demolition of RC Structures with a Small Height-to-Width Ratio

Experimental Testing Comparison between Wiremesh Reinforcement and Plain Reinforcement on Concrete Slabs

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