Exploratory study on bond behavior of plain and sand coated stainless steel rebars in concrete

Islam, Kamrul; Billah, A. H. M. Muntasir; Chowdhury, Md. Mominul Islam; Ahmed, Khondaker Sakil

doi:10.1016/j.istruc.2020.07.039

Cited by 21 publications

(15 citation statements)

References 28 publications

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“…Research on reinforced concrete structures has remained consistent: Yue Liu [ 13 ] investigated the bonding properties and bond strength between ultra-lightweight concrete and high-strength concrete; Emanuel Freitas [ 14 ] studied the bonding properties between reinforcement and low bond concrete; A. Casanova [ 15 ] proposed a new finite element method for simulating the bonding effect of reinforced concrete; Yijie Huan [ 16 ] investigated the bonding performance between epoxy coated reinforcement (ECSB) and seawater sea sand recycled concrete; Xueyu Xiong [ 17 ] simulated the bonding performance of slowly bonded prestressing tendon (RBT) beam soils and compared the bonding performance of RBT beams with that of deformed steel bars. Kamrul Islam [ 18 ] studied the effect of various factors on the bond strength of reinforced concrete; M. Harajli [ 19 ] conducted a comparative analysis of bond slip characteristics of reinforcement in plain and fibrous concrete; Dorleta Ertzibengoa [ 20 ] studied the bond characteristics of carbon and stainless steel flat bars; Eliene Pires Carvalho [ 21 ] investigated the bond strength of thin reinforced concrete; and, Le Huang [ 22 ] provided a new mechanical model and simulated the nonlinear bond properties of reinforced concrete using a beam test method.…”

Section: Introductionmentioning

confidence: 99%

Basic Mechanical Properties of Duplex Stainless Steel Bars and Experimental Study of Bonding between Duplex Stainless Steel Bars and Concrete

Cui

Wang

2021

Materials

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In recent years, as a result of the large-scale use of stainless steel bars in production and life, people’s demand for stainless steel bars has increased. However, existing research information on stainless steel bars is scant, especially the lack of research on the mechanical properties of duplex stainless steel bars and the bonding properties of duplex stainless steel bars to concrete. Therefore, this paper selects 177 duplex stainless steel bars with different diameters for room temperature tensile test, and then uses mathematical methods to provide suggestions for the values of their mechanical properties. The test results show that the duplex stainless steel bar has a relatively high tensile strength of 739 MPa, no significant yield phase, and a relatively low modulus of elasticity of 1.43 × 105 MPa. In addition, 33 specimens were designed to study the bonding properties of duplex stainless steel bars to concrete. In this paper, the effects of concrete strength, duplex stainless steel reinforcement diameter, the ratio of concrete cover to reinforcing steel diameter, and relative anchorage length on the bond stress were investigated, and a regression model was established based on the experimental results. The results show that, with the concrete strength concrete strength from C25 to C40, the compressive strength of concrete increased by 56.1%, the bond stress increased by 27%; the relative anchorage length has been increased from 3 to 6, the relative anchorage length has doubled, and the bond stress has increased by 13%; and, the ratio of concrete cover to reinforcing steel diameter increased to a certain range on the bond stress has no significant effect and duplex stainless steel reinforcement diameter has little effect on the bond stress. The ratio of concrete cover to reinforcing steel diameter from 3.3 to 4.5 and the bond stress increased by 24.7%. A ratio of concrete cover to reinforcing steel diameter greater than 4.5 has no significant effect on the bond stress, with the average bond stress value of 20.1 MPa. The duplex stainless steel bar diameter has little effect on the bond stress for the diameters of 12 mm, 16 mm, 25 mm duplex stainless steel bar, and their average bond stress is 19.9 MPa.

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Section: Introductionmentioning

confidence: 99%

Basic Mechanical Properties of Duplex Stainless Steel Bars and Experimental Study of Bonding between Duplex Stainless Steel Bars and Concrete

Cui

Wang

2021

Materials

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“…Te coated specimens exhibited the very little amount of geometric deterioration in all the accelerated states of corrosion. Te zinc and nano PCB coating prevent oxidation by creating an electropositive protective layer [27] around the steel rebar and signifcantly inhibited the rate of corrosion and the corresponding reduction in the rebar diameter as compared in Figures 9 and 10. Due to this efect, the steel rebar of 10 cm initial diameter with zinc and nano PCB-coating was reduced to 9.75 cm and 9.8 cm at 2 V, 9.4 cm and 9.56 cm at 4 V, and 8.64 cm and 8.75 cm at 6 V, respectively as given in Figure 8.…”

Section: Dimensional Change Te Efect Of Corrosion Inducedmentioning

confidence: 95%

Corrosion Resistant Coating from Nano Printed Circuit Board Powder for the Reinforced Concrete Structures

Mohana¹,

Selvaganesh²,

Issac³

et al. 2023

Advances in Materials Science and Engineering

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Corrosion in steel leads to the deterioration of reinforced concrete structures due to chemical reactions between steel and its surrounding atmosphere. In this paper, a novel anticorrosive powder was derived from the waste Printed Circuit Board (PCB) and manually coated on the steel rebar of the reinforced concrete specimen. The corrosion-resistant efficiency of the developed nano PCB-coating on the steel bars was studied by polarization, electrochemical impedance spectroscopy, and accelerated corrosion technique. Also, the applicability of the nano PCB-coated rebar as reinforcement in the concrete environment was investigated. From the results, it was observed that the nano PCB-coated specimens exhibited 3.5 times reduced rate of corrosion and lost only 46.15% strength and 52.5% diameter under the accelerated rate of 6 V after 48 hours. The presence of nano PCB powder improved the corrosion-resistant behaviour of the steel rebar by 1.65 times of the noncoated specimen. Also, the nano PCB-coating reduced the loss in residual yield strength of the corroded steel rebar by 32% lesser than the noncoated specimens and exhibited similar corrosion-resistant properties as that of the existing zinc coating. In addition to the corrosion resistance, the nano PCB-coated steel rebar exhibited almost similar adhesion with concrete as that of the commercial zinc coating which is 7% lower than uncoated steel rebars. It was inferred from this research work that the proposed anticorrosive coating prepared from the waste nano PCB powder showed better corrosion-resistant behaviour and reduced the overall cost of coating by 42%, which ensures economy and serviceability.

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“…Each cement bag was kept in an air-tight plastic bag to prevent unwanted hydration with the moisture which is normally prominent in local weather conditions. (Ahmed et al, 2021b), stainless steels (Ahmed et al, 2021a;Islam et al, 2020) and also applicable for retrofitting and strengthening of existing structures such as column jacketing (Mahmud & Ahmed, 2020). Locally obtained fine and coarse aggregates which conform to the ASTM standards were used for the preparation of cement mortar and concrete.…”

Section: Experimental Investigationsmentioning

confidence: 99%

Physical and Strength Properties of Cements Manufactured in Bangladesh: A Case Study

Asef¹,

Ahmed²,

Ahmed³

2022

MIJST

Self Cite

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This study investigates the physical qualities and strength properties of representative cements manufactured by different brands in Bangladesh. The physical and strength properties such as normal consistency, initial and final setting time, density, specific gravity, fineness, and compressive strength of cement mortars as well as concrete cylinders were investigated experimentally. Using CEM II/B-M type cement, a total of 300 test specimens are prepared to determine those parameters. In this case study, specimens were prepared from ten different representative cement industries of Bangladesh and tested as per ASTM specifications. The experimental result shows that the physical and strength parameters of nearly all the representative cement samples are within the ASTM recommended ranges that ultimately proofs the quality of Bangladeshi Cement. The relationship between mortar and concrete strengths from the same batch of cement has also been investigated. Besides, a regression analysis has been conducted to find relationships between the concrete strength and their age of curing. The influence of initial and final setting times on concrete strength is also investigated. This study also provides the relationships between compressive strengths, between mortar and concrete cylinders at different ages. These age dependencies of concrete strength will help to predict the actual concrete strength at the early age of curing which may ensure faster construction work.

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Exploratory study on bond behavior of plain and sand coated stainless steel rebars in concrete

Cited by 21 publications

References 28 publications

Basic Mechanical Properties of Duplex Stainless Steel Bars and Experimental Study of Bonding between Duplex Stainless Steel Bars and Concrete

Basic Mechanical Properties of Duplex Stainless Steel Bars and Experimental Study of Bonding between Duplex Stainless Steel Bars and Concrete

Corrosion Resistant Coating from Nano Printed Circuit Board Powder for the Reinforced Concrete Structures

Physical and Strength Properties of Cements Manufactured in Bangladesh: A Case Study

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