Flexural behaviour of one-way patched reinforced concrete (RC) slab under concentrated load

Kristiawan, Stefanus Adi; Supriyadi, Agus; Pradana, Dinario Reza; Azhim, Muhammad Rizki Nur

doi:10.1007/s42107-018-0014-7

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…Otherwise, other repairs or strengthening systems must be implemented [9][10][11][12][13]. Previous research successfully developed a repair material using UPR-mortar [14], which can restore the load carrying capacity of the damaged RC slabs [15,16]. This material is used in this research to repair damaged slabs, and their subsequent load carrying capacity is of interest.…”

Section: Introductionmentioning

confidence: 99%

“…The accuracy of the YLT method in estimating the load carrying capacity of the RC slab is influenced by the correct estimation of the yield lines pattern. Previous studies indicated that repair material alters the formation of the yield lines in the patched RC slab [15,23]. For this reason, this research aims to evaluate the validity of the YLT for estimating the load carrying capacity of one-way patched RC slabs under a concentrated load.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of YLT method to estimate the load carrying capacity of one-way patched reinforced concrete slab under concentrated load

Kristiawan¹,

Basuki²,

Supriyadi³

et al. 2023

International Journal of Applied Mechanics and Engineering

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An unsaturated polyester resin (UPR) mortar was applied to repair the damage to the tension zone's one-way reinforced concrete (RC) slabs. The load carrying capacity of the patched RC slab is of interest to justify the effectiveness of the repair. The Yield Line Theory (YLT) may be used to estimate the load carrying capacity of patched RC slabs under concentrated load. The results of the YLT are compared with the experimental results to evaluate the validity of the YLT method. The results confirm that patching alters the yield line formation, mainly when the concentrated load is applied close to the patching zone. Subsequently, the YLT method provides a higher load carrying capacity estimation deviation for slabs with a loading point near the patching zone. On the other hand, the YLT method estimates load carrying capacity accurately when the loading point is away from the patching zone.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of YLT method to estimate the load carrying capacity of one-way patched reinforced concrete slab under concentrated load

Kristiawan¹,

Basuki²,

Supriyadi³

et al. 2023

International Journal of Applied Mechanics and Engineering

Self Cite

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“…The studies have demonstrated the effectiveness of the structural reinforcement techniques by bonding composite plates used as external reinforcement. Kristiawan et al (2018) have used unsaturated polyester resin-mortar is used to repair the damaged reinforcement concrete (RC) slabs. Several authors have also dealt with the problem of a concrete slab reinforced with circular plates bonded to the center of the slab to cover the area of the maximum moment (El Houssain, 2004; Guidotti, 2010; MenetreyPh, 1996; Talbota, 1913; Teng, 2001).…”

Section: Introductionmentioning

confidence: 99%

Behavior of strengthened concrete slab under eccentric compressive load

Bouamra

Taouche-Kheloui

Tahar

2021

WJE

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Purpose The purpose of this study is experimental research of the mechanical behavior of slab reinforced by cork composite patch submitted to an eccentric progressive compressive load applied to on impact rectangle of dimensions 28 × 23 cm2. An analytical model and numerical modeling by finite elements are performed. This study is motivated by the evaluation of the effectiveness of this type of partial reinforcement to improve strength and ductility. The results are given by load-displacement curves, tensile damages cartography and ultimate strength histogram. Design/methodology/approach In experimental protocol, the following two parameters have been considered: the dimensions of the patch and the eccentricity of the load. The sections of the patches are calculated so that the ratio (XP/YP) patch is proportional to the ratio (LD/lD), with a step of 6 cm longitudinally and 4 cm transversely. Several dimensions patches are considered: (6 × 4) cm2, (12 × 8) cm2 and (18 × 12) cm2. The eccentric punching loading test was performed with an eccentricity of the load (1/3) L’ and (2/3) L’ compared to the center of gravity of the slab. Taking into account the eccentricity of the load in estimating the rupture strength, the equations are developed. Thus, numerical simulations are carried, to extract tensile damages cartography. Findings The results show that the rupture begins with the appearance of cracks in the unreinforced area. For an eccentricity of 1/3L’2, whereas for an eccentricity de 2/3L’, the patch (6 × 4) cm2 gives a better resistance. The results highlight the influence of the composite on the ultimate load. The force-displacement relations are little modified in the elastic phase. The experimental results have been compared with the theoretical models showing a good correlation. Originality/value The strength and ductility are depended on the dimensions of the patch and the eccentricity of the load. The use of a patch to cover the most stressed area, in the event of an eccentric axial load is a very economical solution compared to the total reinforcement. The damage field shows that the evolution of cracks depends on dimensions and the position of the patch. Indeed, the eccentricity of the vertical load induces an additional bending moment that will influence the fracture surface. The rupture load and ultimate displacement increase with the surface of the patch.

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