Assessment of Lightweight Concrete-to-Concrete Interface Shear Resistance

Čairović, Đorđe; Zlámal, Martin; Žítt, Petr; Štěpánek, Petr

doi:10.1007/978-3-319-59471-2_121

Cited by 1 publication

(3 citation statements)

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“…Even with those modifications, monolithic failures can occur even for smooth interface surfaces, when lightweight-aggregate concrete is used. 33 This type of failure occurred due to the low tensile/compressive strength ratio. For that reason, the Confined SLT (C-SLT) Čairovi c et al 33 was proposed (see Figure 7c).…”

Section: Slant Shear Testsmentioning

confidence: 99%

“…33 This type of failure occurred due to the low tensile/compressive strength ratio. For that reason, the Confined SLT (C-SLT) Čairovi c et al 33 was proposed (see Figure 7c). Steel square tubes were used to transversely confine the concrete, thus increasing the strength of the monolithic parts.…”

Section: Slant Shear Testsmentioning

confidence: 99%

“…Efficiency was defined as the ratio between specimen volume and interfacial area, and characterized as low for values lower than 30%, medium in the range from 30 to 60%, and high if higher than 60%. The presented coefficients of variation (CoV) are based on the experimental program carried out within this (and previous 30,33 ) research, and data available in the literature. 7,8,35,36 Some authors have obtained both adhesive and cohesive failures (interface and monolithic concrete failure modes).…”

Section: Comparisonmentioning

confidence: 99%

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Suitability of different tests for characterization of the dimpled concrete‐to‐concrete interface

Čairović

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Zlámal

et al. 2020

Structural Concrete

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The main aim of this study was to assess the suitability of different existing test setups for the mechanical characterization of a dimpled interface obtained by casting concrete against dimpled high-density polyethylene (HDPE) membrane. Even though this type of interface roughening is widely used, especially for monolithic connections between precast elements, to the best of the authors' knowledge there is no research providing any data regarding its roughness parameters, tension, and shear strength, nor its failure modes. To this end, a two-fold objective was established for this research: (a) to identify and analyze, from a technical standpoint, the available test configurations for characterizing the mechanical performance of interfaces, and (b) to perform an extensive experimental program devoted to characterizing the mechanical performance of a dimpled HDPE membrane-cast concrete interface. The suitability of each test for reproducing the expected stress state and the actual resistance mechanism was analyzed. Moreover, a comparison between tension and shear tests, including its main advantages and disadvantaged are also presented.

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Section: Slant Shear Testsmentioning

confidence: 99%

Section: Slant Shear Testsmentioning

confidence: 99%