Experimental and numerical investigation of reinforced concrete slabs under blast loading

Kumar, V.; Kartik, K.V.; Iqbal, M.A.

doi:10.1016/j.engstruct.2019.110125

Cited by 90 publications

(32 citation statements)

References 22 publications

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“…A good summary of different progressive collapse of reinforced concrete structures can be found in the recent work of Alshaikh et al [5]. It is more common to find works on structural elements such as slabs [6], [7], beams-columns [8], [9], or walls [10], [11]. Of these, the vast majority are on a reduced scale, but there are some publications that present results on a real scale.…”

Section: Introductionmentioning

confidence: 99%

Full-Scale Reinforced Concrete Slabs With External Reinforced Polymer: Field Test and Numerical Comparison

Castedo

Santos

Reifarth

et al. 2022

WIT Transactions on the Built Environment

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Numerical simulation of reinforced concrete (RC) slabs with the addition of an external reinforced polymer (FRP) have been developed and compared with full scale real tests. The size of the slabs was 4.4 x 1.46 m, with a span of 4 m, and a thickness of 15 cm. The slabs were built using concrete of class C25/30, and B500C reinforcing steel. Seven tests were conducted, one at a scaled distance of 0.83 m/kg 1/3 , three at a scaled distance of 0.42 m/kg 1/3 , and three at 0.21 m/kg 1/3 . For the biggest scaled distance, the slab had no extra reinforcement. In the other two cases one of the slabs had no extra reinforcement, while the other two tests were performed with carbon fibre reinforcement (CFRP) and E-glass fibre reinforcement (GFRP) located on the face opposite to the blast. Numerical simulation was performed with LS-DYNA software. The study elements (concrete, steel and reinforcement) have been simulated in a Lagrangian formulation with solid elements, beam elements and shells, respectively. Three concrete models have been used and compared: CSCM, MAT72-R3 and RHT. As for the explosive, the CONWEP-based Load Blast Enhanced (LBE) card was used. Reinforcement with CFRP resulted in a generally reduced damage area on both surfaces. All models show a good correlation with the test results and a non-destructive damage estimation technique when comparing them in terms of damage area.

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Section: Introductionmentioning

confidence: 99%

Full-Scale Reinforced Concrete Slabs With External Reinforced Polymer: Field Test and Numerical Comparison

Castedo

Santos

Reifarth

et al. 2022

WIT Transactions on the Built Environment

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“…With the establishment and practice of the concept that clear waters and green mountains are as good as mountains of gold and silver, and the promotion of comprehensive resource conservation and recycling policies, relevant policies are constantly improved and updated, the management policy of urban construction land is becoming more and more strict, and the urban construction land is increasingly tense [2]. erefore, the construction of highrise residential and commercial complex has become the trend of urban construction and development [3,4].…”

Section: Introductionmentioning

confidence: 99%

Concrete Interface Feature Extraction and Stability Analysis Based on PCA Model

Zhao

Yin

et al. 2022

Mathematical Problems in Engineering

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With the rise of concrete pumping construction technology, high-mobility concrete has been more and more widely used. However, high fluidity concrete is prepared with high sand ratio and small stones, which weakens the volume stability of aggregate as a skeleton. Therefore, instability often appears in the practical application of large concrete. At present, the research on the stability of concrete interface feature extraction is still relatively scarce. In this paper, through a large number of experiments, the law of the main performance of concrete is systematically studied, and the characteristics of concrete interface are extracted using the principal component analysis (PCA) model. On this basis, the influence of different factors on the stability of concrete is studied, especially the compressive strength, volume stability, and durability of concrete. The experimental results will have a good reference value and far-reaching significance for improving the application status of high fluidity concrete.

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“…A large number of in situ explosion tests of concrete structures have been carried out. For example, Kumar et al [16] studied the damage resistance of reinforced concrete slabs under blast loading, analyzed the damage characteristics of reinforced concrete slabs under different explosive quantities, and found that with the increase of explosive quantity, the bending and unidirectional splitting of slabs changed more significantly. Wang et al [17,18] studied the damage characteristics of square reinforced concrete slabs under near blast conditions by means of experiment and numerical simulation and obtained the failure modes and corresponding damage criteria of square reinforced concrete slabs.…”

Section: Introductionmentioning

confidence: 99%

Damage Characteristics of Polymer Plates under the Impact of the Near‐Field and Contact Underwater Explosion

Liu

Zhao

Fang

et al. 2021

Advances in Materials Science and Engineering

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In order to study the damage characteristics of polymer plates under the impact of the underwater explosion, the underwater contact and near-field explosion tests of polymer plates were conducted using different explosive quantities. In this paper, eight polymer plates with the size of 500 mm × 500 mm × 60 mm were made, and eight groups of explosion tests were carried out by using the rock emulsion explosive and nonconductive detonators. The damage modes and spatial distribution characteristics of the polymer plate generated by the underwater contact and near-field explosion impact with different explosive quantities are compared and analyzed. In addition, the characteristics of the shock wave propagation in the plates are investigated. It can be observed that the main damage mode of polymer plate is overall damage under the contact underwater explosion. For the near-field explosion, the main damage mode changes to overall failure, and the damage of contact explosion to polymer plate is greater than that of underwater near-field explosion. The polymer plate can reduce and delay the shock wave effectively, but the effect decreases with the increase of explosive quantity in the underwater contact explosion.

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Experimental and numerical investigation of reinforced concrete slabs under blast loading

Cited by 90 publications

References 22 publications

Full-Scale Reinforced Concrete Slabs With External Reinforced Polymer: Field Test and Numerical Comparison

Full-Scale Reinforced Concrete Slabs With External Reinforced Polymer: Field Test and Numerical Comparison

Concrete Interface Feature Extraction and Stability Analysis Based on PCA Model

Damage Characteristics of Polymer Plates under the Impact of the Near‐Field and Contact Underwater Explosion

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