Tests of Fiber Reinforced Concrete Composite Slabs on the Subsoil With Horizontal Load

Čajka, Radim

doi:10.21660/2020.69.9461

Cited by 8 publications

(8 citation statements)

References 26 publications

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“…Slab will sustain the two directions of load and that is why in an experimental works, loading was supposed to simulate real-life loading [44]. This view is supported by Cajka et al (2020) [45], who added that vertical and lateral loading is typical to be examined in the case of slab in building, especially in undermined areas. In flooring system, combined vertical and lateral loading has an important effect on the slab behaviour [46].…”

Section: Bearing Resistance and Slip-displacementmentioning

confidence: 97%

Bearing Resistance and Failure Mode of Bolted-layered Cemboard Panels

Norhalim¹,

Jaini²

2020

IJIE

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The fabrication of precast slab can be made from wide range of material either neat concrete, foamed concrete or even composite. Until recently, a new interest has been discovered. Instead of wet concrete mixing process in plant, the precast slab can be substituted with fibre cement board or commonly referred as cemboard that meets the specific load requirements with minimum thickness. However, cemboard panel is preferable for lightweight floor system due to its physical strength limitation. Its thickness that relatively small around 15 mm to 25 mm contribute to the drawback and subsequently prohibited the application of cemboard panel as heavyweight floor system. Small specimens are prepared to determine the optimum orientation of bolts and type of bond by analysing the bearing resistance and bond-slip behaviour. It was found that the bearing capacity is governed by polyurethane glue. Meanwhile, the bond-slip behaviour is effectively controlled by the steel bolt. If the steel bolt is solely used as bond mechanism, the bearing capacity will rely on its quantity and capacity and increasing the quantity of steel bolt will eventually lead to the higher value of bearing resistance.

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Section: Bearing Resistance and Slip-displacementmentioning

confidence: 97%

Bearing Resistance and Failure Mode of Bolted-layered Cemboard Panels

Norhalim¹,

Jaini²

2020

IJIE

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“…In the analysis, the selected parameters (for example, stiffness K nn and K tt ) were also chosen with respect to the numerical stability of the calculation. The interface parameters will significantly influence the calculation for the case of horizontal loading when this is a separate research task, as shown and experimentally solved in [74]. The functionality of the interface itself is illustrated in Figure 8b, in which the lifting of the corners of the slab can be seen.…”

Section: Experiments For Reinforced Concrete Slab-numerical Modelingmentioning

confidence: 97%

Numerical Modeling and Analysis of Concrete Slabs in Interaction with Subsoil

et al. 2020

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This article focuses on the analysis and numerical modeling of a concrete slab interacting with subsoil. This is a complex task for which a number of factors enter into the calculation, including the scope or dimension of the model, the non-linear solution approach, the choice of input parameters, and so forth. The aim of this article is to present one possible approach, which is based on a non-linear analysis and a three-dimensional computational model. Five slabs were chosen for modeling and analysis. The experiments involved slabs of 2000 × 2000 mm and a thickness of 150 mm, which were tested using specialized equipment. The slabs included a reinforced concrete slab, a standard concrete slab, and three fiber-reinforced concrete slabs. The fiber-reinforced slabs had fiber volume fractions of 0.32%, 0.64%, and 0.96%, which corresponded to fiber dosages of 25, 50, and 75 kg/m3. A reinforced concrete slab was chosen for the calibration model and the initial parametric study. The numerical modeling itself was based on a detailed evaluation of experiments, tests, and recommendations. The finite element method was used to solve the three-dimensional numerical model, where the fracture-plastic material of the model was used for concrete and fiber-reinforced concrete. In this paper, the performed numerical analyses are compared and evaluated, and recommendations are made for solving this problem.

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Section: Introductionmentioning

confidence: 99%

“…The task of the slab in the interaction with the subsoil is one of the complex research problems [1][2][3]. The solved problem connects the area of design and analysis of concrete structures and then the area of geotechnics [3][4]. Often specialized testing machines are used for experiments, where a selected testing device for testing slabs in interaction with the substrate is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling and Diagnostic of FRC Slab under Centric and Eccentric Load

Marcalíková

Čajka

2022

Civil and Environmental Engineering

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The solved area of research is the slab in interaction with the subsoil, where the goal is numerical modeling of the problem using a 3D computational model and nonlinear analysis. Specifically, the case of two experiments with a slab with centric and eccentric loading is solved. The performed experiments are used after for numerical modelling when a comprehensive set of laboratory tests of mechanical properties of fiber-reinforced concrete is also performed. Specifically, compressive strength, modulus of elasticity, splitting tensile test and bending tensile test were performed. The performed experiments are evaluated using 2D sections and 3D approximation surfaces, which are then used for load-displacement diagrams. Numerical modeling is based on nonlinear analysis and the use of the finite element method. The computational model use isoparametric finite elements. Based on the performed experiments and numerical modeling, the evaluation of the solved task is performed.

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Tests of Fiber Reinforced Concrete Composite Slabs on the Subsoil With Horizontal Load

Cited by 8 publications

References 26 publications

Bearing Resistance and Failure Mode of Bolted-layered Cemboard Panels

Bearing Resistance and Failure Mode of Bolted-layered Cemboard Panels

Numerical Modeling and Analysis of Concrete Slabs in Interaction with Subsoil

Numerical Modeling and Diagnostic of FRC Slab under Centric and Eccentric Load

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