Experimental Research on Concrete Beams Reinforced with High Ductility Steel Bars and Strengthened with a Reactive Powder Concrete Layer in the Compression Zone

Perkowski, Zbigniew; Czabak, Mariusz; Grzeszczyk, Stefania; Frączek, Daniel; Tatara, Karolina; Matuszek-Chmurowska, Aneta; Jurowski, Krystian; Jędraszak, Bronisław

doi:10.3390/ma13184173

Cited by 10 publications

(9 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fibre reinforced concrete belongs to High Performance Concretes (HPC), which are typically used for strengthening linear horizontal members, for instance, beams [13,14]. The mechanical properties of fibre reinforced concretes are influenced by the type of used fibres, such as steel, glass, polypropylene of basalt [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Concrete Column by Using the Wrapper Layer of Fibre Reinforced Concrete

et al. 2020

View full text Add to dashboard Cite

Structures and bridges are being designed on the proposed and requested design lifetime of 50 to 100 years. In practice, one can see that the real lifetime of structures and bridges is shorter in many cases, in some special cases extremely shorter. The reasons for the lifetime shortening can be increased of the load cases (e.g., due to traffic on bridges, or due to other uses of a structure), using the material of lower quality, implementation of new standards and codes according to Eurocode replacing older ones. During the whole lifetime the structures must be maintained to fulfil the code requests. If the constructions are not able to fulfil the Ultimate Limit States (ULS) and the Serviceability Limit State (SLS), the structures or bridges have to be strengthened (whole or its elements). The purpose of the paper is the presentation of using a layer of the fibre concrete for a columns’ strengthening. Using the fibre reinforced concrete (FRC) of higher tensile strength makes it possible to increase the load-bearing capacity of the cross-section the column. The contact between the old concrete (core of column) and newly added layer (around column) is very important for using that method of strengthening. In the article, there is also a comparison of the surface modification methods.

show abstract

Section: Introductionmentioning

confidence: 99%

Strengthening of Concrete Column by Using the Wrapper Layer of Fibre Reinforced Concrete

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The combination of metals with cement as a reinforcement concrete is widely utilized in civil engineering and design for better mechanical characteristics and longevity of structures (1,2).…”

Section: Introductionmentioning

confidence: 99%

“…Various approaches have been suggested to improve the anticorrosion features of reinforcing metallic materials (4,5). Among all proposed protection methods, corrosion inhibitors have gained a lot of attention in recent studies [1][2][3][4] (6)(7)(8)(9).…”

Section: Introductionmentioning

confidence: 99%

Adsorption and mitigation impact of the monosodium glutamate (C₅H₈NO₄Na) bio-molecules on the steel rebar corrosion in the chloride-contaminated simulated concrete pore solution

Mohammadkhah

Dehghani

Ramezanzadeh

2023

Preprint

View full text Add to dashboard Cite

Corrosion has caused significant annual costs for building construction and civil architectural designs. In this study, Monosodium glutamate (GLU) was proposed as a potential candidate for long-lasting corrosion inhibition to slow down the rate of corrosion in the concrete pore environment. In this regard, the electrochemical and morphological properties of the various GLU concentrated systems between 1 to 5 wt.% in the simulated concrete pore solution media were investigated. According to the EIS results, adding 4 wt.% of GLU could reduce the mild steel corrosion process by 86% through a mixed inhibition mechanism. Also, the polarization records represented that the samples' corrosion current density was diminished to 0.169 µA.cm-2 after the addition of 4 wt.% GLU into the harsh environment. Using the FE-SEM method, the growth of the GLU layer over the metal substrate was demonstrated. The results of spectroscopic methods, i.e., Raman and GIXRD, demonstrated that GLU molecules were successfully adsorbed over the surface of the metal. Contact angle test outcomes showed that by increasing the GLU concentration to its optimum level (4 wt.%), the surface hydrophobicity was dramatically raised to 62 degrees.

show abstract

“…The advantages of steel fibre reinforced concrete result from its higher plasticity and energy absorption capacity. It is especially noticeable in the case of destructive loads at which conventional concrete would fail [ 3 , 7 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Non-Destructive Methods and Numerical Analysis Used for Monitoring and Analysis of Fibre Concrete Deformations

et al. 2022

View full text Add to dashboard Cite

The aim of the research was to check the possibility of using the non-destructive method of acoustic emission to assess the condition of concrete without dispersed reinforcement and with various additions of curved steel fibres, during three-point bending. An important aspect of the research proposed in the article is the use of a hybrid method of analysis, which involves complementing the results of strength tests, the results of numerical calculations and the results of strain distributions recorded with a digital image correlation system (DIC System, in this research GOM Suite optical system). The operation of the concrete material under load, depending on the amount of fibres added, is reflected in the recorded acoustic emission (AE) signals. The differences concern the number of signals of individual classes and their distribution over time. The differences exist for both low and high load values, which confirms the possibility of using the acoustic emission method to monitor the condition of the material. It was shown that the numerically determined effective stress levels decreased as the proportion of steel fibres in the concrete increased, while the maximum levels of the first principal stresses increased. During the analyses, a preliminary comparison of the deformation results obtained using the finite element method and the DIC System was also carried out.

show abstract

Experimental Research on Concrete Beams Reinforced with High Ductility Steel Bars and Strengthened with a Reactive Powder Concrete Layer in the Compression Zone

Cited by 10 publications

References 42 publications

Strengthening of Concrete Column by Using the Wrapper Layer of Fibre Reinforced Concrete

Strengthening of Concrete Column by Using the Wrapper Layer of Fibre Reinforced Concrete

Adsorption and mitigation impact of the monosodium glutamate (C₅H₈NO₄Na) bio-molecules on the steel rebar corrosion in the chloride-contaminated simulated concrete pore solution

Non-Destructive Methods and Numerical Analysis Used for Monitoring and Analysis of Fibre Concrete Deformations

Contact Info

Product

Resources

About