Experimental and numerical analysis of blast response of High Strength Fiber Reinforced Concrete slabs

Luccioni, Bibiana; Isla, Facundo; Codina, Ramón; Ambrosini, Daniel; Zerbino, Raúl Luis; Giaccio, Graciela Marta; Torrijos, María Celeste

doi:10.1016/j.engstruct.2018.08.016

Cited by 40 publications

(10 citation statements)

References 34 publications

(49 reference statements)

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“…As in the rest of the blast tests, fibres were pulled-out without failing in all cases. A good agreement between numerical and experimental final damage patterns was obtained but the numerical simulations show that homogeneous models are not able to reproduce HSFRC behaviour under the whole range of scaled distances to reproduce flexure failure, cratering and spalling [30].…”

Section: Blast Tests Resultsmentioning

confidence: 88%

“…The rest of the results can be found in Ref. [30]. In all tests performed on plain concrete brittle flexure failure of the slabs was obtained due to the reduced slab thickness and the brittle nature of HSC.…”

Section: Blast Tests Resultsmentioning

confidence: 99%

“…The model requires concrete properties, fibres material, geometry, distribution and orientation as input data. The fibres bond-slip behaviour is obtained from a pull-out model [30]. The strain rate dependence is explicitly taken into account in the constitutive models of the components.…”

Section: Meso-model For Hsfrcmentioning

confidence: 99%

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Mechanical Response of High Strength Fibre Reinforced Concrete Under Extreme Loads

et al. 2020

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High Strength Fibre Reinforced Concrete (HSFRC) presents great advantages when compared with conventional concrete under static loads and thus, it constitutes a promising material to withstand extreme loads. An experimental and numerical research carried out with the objective of developing design criteria for HSFRC use in protective structures construction is presented. The mechanical behaviour of HSFRC elements under extreme loads is experimentally and numerically analysed. Numerical models represent useful tools for the design of this type of HSFRC applications but they should be carefully calibrated and validated with experimental results. HSFRC prims and slabs including different types of hooked-end steel fibres are tested under static, blast and impact loads. Material models at the meso and the macro scale are developed, they are calibrated with characterization tests and validated with experimental results. Experimental results are analysed with the aid of numerical models showing the effect of fibre type and content under extreme load. Numerical models are able to reproduce the blast and impact tests results and give additionally information about the local and structural response under impulsive loads that could be valuable for the design of protective structures.

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Section: Blast Tests Resultsmentioning

confidence: 88%

Section: Blast Tests Resultsmentioning

confidence: 99%

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Mechanical Response of High Strength Fibre Reinforced Concrete Under Extreme Loads

et al. 2020

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“…Moreover, different fracture toughness of various concrete will result in different failure modes [ 27 ]. At present, HSFRC was mainly used in special protection structures and structure-strengthening engineering [ 28 , 29 ]. However, there was hardly research on steel-HSFRC composite beams.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Static Performance of Stud Connectors in Steel-HSFRC Composite Beams

Tang

Xue

et al. 2021

Materials

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In this research, high strength fiber reinforced concrete (HSFRC) was used to replace the normal strength concrete (NSC) in steel-concrete composite beams to improve their working performance, which might change the static performance of stud connectors. Firstly, push-out tests were conducted to investigation on the static performance of stud connectors in steel-HSFRC composite beams and compared with steel-NSC composite beams. Studs of 8 sizes, 13 mm, 16 mm, 19 mm and 22 mm in diameter and 80 mm and 120 mm in height were adopted to study the influence of stud dimension. The test phenomenon shown that the crack resistance of HSFRC was better than that of NSC, and there were some splitting cracks on NSC slabs whereas no visible cracks on HSFRC slabs when specimens failed. Next, the load-slip curves of studs were analyzed and a typical load-slip curve was proposed which was divided into four stages. In addition, the effects of test parameters were analyzed according to the characteristic points of load-slip curve. Compared with NSC slab, HSFRC slab could provide greater restraining force to the studs, which improved the shear capacity and stiffness of studs while suppressed the ductility of studs. The shear capacity, stiffness and ductility of studs would significantly increase with the increasement of stud diameter and the studs with large diameter were more suitable for steel-HSFRC composite beams. The stud height had no obvious influence on the static performance of studs. Finally, based on the test results, the empirical formulas for load-slip curve and shear capacity of stud connectors embedded in HSFRC were developed which considered the influence factors more comprehensively and had better accuracy and applicability than previous formulas.

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“…erefore, a large temperature difference can be generated between the surface and the core area of the concrete during the early stage of the pouring concrete [1][2][3]. e large temperature difference may lead to cracks, which may reduce the durability of the massive concrete [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Improving Heat Exchange Performance of Massive Concrete Using Annular Finned Cooling Pipes

Zhou

2021

Advances in Materials Science and Engineering

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Cracks will be generated due to high internal temperature of the massive concrete. Postcooling method is widely employed as a standard cooling technique to decrease the temperature of the poured mass concrete. In this paper, an annular finned cooling pipe which can increase the heat transfer area between the flowing water and its surrounding concrete is proposed to enhance the cooling effect of the postcooling method. Analysis of the interior temperature variation and distribution of the concrete block cooled by the annular finned cooling pipe system and the traditional cooling pipe system was conducted through the finite element models. It is found that, for the concrete block using the proposed annular finned cooling pipe system, the peak value of the interior temperature can be further lowered. Compared with the traditional cooling pipe, the highest temperature of concrete with an annular finned cooling pipe appears earlier than that with the traditional cooling pipe.

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Experimental and numerical analysis of blast response of High Strength Fiber Reinforced Concrete slabs

Cited by 40 publications

References 34 publications

Mechanical Response of High Strength Fibre Reinforced Concrete Under Extreme Loads

Mechanical Response of High Strength Fibre Reinforced Concrete Under Extreme Loads

Experimental Investigation on the Static Performance of Stud Connectors in Steel-HSFRC Composite Beams

Improving Heat Exchange Performance of Massive Concrete Using Annular Finned Cooling Pipes

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