Non-Linear Analysis of an RC Beam Without Shear Reinforcement with a Sensitivity Study of the Material Properties of Concrete

Sucharda, Oldřích; Matečková, Pavlína; Bílek, Vlastimil

doi:10.2478/sjce-2020-0005

Cited by 26 publications

(21 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Splitting tensile and fracture tests were not carried out, although these properties are essential for the evaluation of the overall behavior of concrete structures. However, these properties can be predicted through the compressive characteristics as shown by Sucharda et al [ 33 ].…”

Section: Methodsmentioning

confidence: 99%

Mechanical Performance of Bio-Based FRP-Confined Recycled Aggregate Concrete under Uniaxial Compression

Ghorbel

2021

Materials

View full text Add to dashboard Cite

This research investigates the effectiveness of bio-sourced flax fiber-reinforced polymer in comparison with a traditional system based on carbon fiber-reinforced epoxy polymer in order to confine recycled aggregate concretes. The experimental investigation was conducted on two series of concrete including three mixtures with 30%, 50%, and 100% of recycled aggregates and a reference concrete made with natural aggregates. The concrete mixtures were intended for a frost environment where an air-entraining agent was added to the mixture of the second series to achieve 4% air content. The first part of the present work is experimental and aimed to characterize the compressive performance of confined materials. The results indicated that bio-sourced composites are efficient in strengthening recycled aggregates concrete, especially the air-entrained one. It was also found that the compressive strength and the strain enhancement obtained from FRP confinement are little affected by the replacement ratio. The second part was dedicated to the analytical modeling of mechanical properties and stress–strain curves under compression. With the most adequate ultimate strength and strain prediction relationships, the full behavior of FRP-confined concrete can be predicted using the model developed by Ghorbel et al. to account for the presence of recycled aggregates in concrete mixtures.

show abstract

Section: Methodsmentioning

confidence: 99%

Mechanical Performance of Bio-Based FRP-Confined Recycled Aggregate Concrete under Uniaxial Compression

Ghorbel

2021

Materials

View full text Add to dashboard Cite

show abstract

“…Specialized tests are then the bending test and the tensile test. It is also appropriate to take into account the stochastic nature [27,78] of the parameters in the resulting parameters. (12) In the case of a known overall load-bearing capacity of a structure, it is possible to use the Newton-Raphson method.…”

Section: Recommendations For Numerical Modeling Of Slabs In Interactimentioning

confidence: 99%

Numerical Modeling and Analysis of Concrete Slabs in Interaction with Subsoil

et al. 2020

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…One relies on the fracture mechanics and concrete resistance modeling of concrete [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ] which considers the concrete mix components, internal damage, stresses and temperature.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Crack Width Development in Reinforced Concrete Beams

2021

View full text Add to dashboard Cite

The reliability and durability of reinforced concrete structures depend on the amount of concrete cracking. The risk associated with cracks generates a need for diagnostic methods for the evaluation of reinforced concrete structures. This paper presents the results of a study of 10 single-span reinforced concrete beams to follow the process of crack formation and changes in their width. The beams were loaded to failure with two forces in a monotonic manner with unloading and in a cyclic manner. Continuous observation of the crack formation process was provided by the digital image correlation system. The simplified method for estimating the maximum crack width is proposed. The presented results confirmed the stochastic character of the process of crack formation and development. The maximum crack widths calculated on the basis of the proposed formula were on the safe side in relation to those calculated according to Eurocode 2. It was also confirmed that the distances between cracks do not depend on the loading manner. Hence the density function describing the distribution of distances between cracks can be used to assess the condition of reinforced concrete elements. The research has also shown the suitability of the DIC system (ARAMIS) for testing concrete elements.

show abstract

Non-Linear Analysis of an RC Beam Without Shear Reinforcement with a Sensitivity Study of the Material Properties of Concrete

Cited by 26 publications

References 31 publications

Mechanical Performance of Bio-Based FRP-Confined Recycled Aggregate Concrete under Uniaxial Compression

Mechanical Performance of Bio-Based FRP-Confined Recycled Aggregate Concrete under Uniaxial Compression

Numerical Modeling and Analysis of Concrete Slabs in Interaction with Subsoil

Analysis of Crack Width Development in Reinforced Concrete Beams

Contact Info

Product

Resources

About