Effect of void Ratio of Inner Steel Tube on Compression Behavior of Double Skin Tubular Column

Ali, Hanaa A.; Salman, Wissam D.

doi:10.1088/1757-899x/584/1/012027

Cited by 10 publications

(2 citation statements)

References 9 publications

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“…Sounds of an explosion of specimens were heard accompanied by a sudden drop in the applied load. RC columns confined by two layers of CFRG with fiber in GPA showed exhibited a failure to rupture the carbon fibers jackets in the first third of the specimen's length, the observed failure mode is typical and applies to the observed failure mode of circular confined RC columns [11][12][13].…”

Section: Failure Modes Of Rc Columns Under Axial Loadmentioning

confidence: 68%

Fibrous Geopolymer Adhesive Jackets for Confining of Reinforced Concrete Columns

Salman¹,

Salman²

2021

DJES

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The strengthening and rehabilitation of reinforced concrete structures is an important issue all over the world. Fiber-reinforced composites (FRC) are mainly used for the strength and rehabilitation of concrete members. However, its use is limited due to its high price and environmental effects and its adoption of epoxy as an adhesive, where epoxy is considered inefficient at high temperatures and loses most of its properties. The solution to this problem leads to the use of low-cost locally available geopolymer adhesive paste, with the possibility of adding fibers to improve the mechanical properties. This paper presents the experimental results of the circular RC columns confined by carbon fiber reinforced geopolymer adhesive (CFRGA) with fibers at geopolymer adhesive (GPA). Variables included; Geopolymer adhesive with or without fibers and type of fiber added to GPA (micro steel fibers, carbon fibers, and polypropylene fibers) with the volumetric ratio of (2%, 0.4%, 0.2%), respectively. The results where it was found that confinement by carbon fiber reinforced fibrous geopolymer adhesive improved the columns compressive strength estimated by (215%) and the axial strain improved by (268%). When adding (micro steel fibers, carbon fibers, and polypropylene fibers) to the adhesive led to an improvement in the strength of about (16.1%, 8.4%, and 7.96%) respectively, compared with the confined RC column without fibers at (GPA). Finally, confinements by carbon fiber reinforced geopolymer adhesive are more suitable for use in strengthening and rehabilitation of RC columns in areas with a hot climate.

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Section: Failure Modes Of Rc Columns Under Axial Loadmentioning

confidence: 68%

Fibrous Geopolymer Adhesive Jackets for Confining of Reinforced Concrete Columns

Salman¹,

Salman²

2021

DJES

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“…The reason for this due to generate tension pressures because stretch and crushing of the core of concrete after applying the axial load then transmitted to the jacket, which withstands these stresses. The mode of failure was observed and found to be typical and identical to the mode of failure columns [11,12].…”

Section: Column Failure Patternmentioning

confidence: 75%

Experimental Investigation on RC Columns Confined by Jacket with Geopolymer Adhesive

Hussien

Salman

2022

DJES

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Columns are one of the important structural members of engineering buildings. The impairment of reinforced concrete columns is one of the important problems affecting most structures, therefore the confinement of columns by fiber-reinforced polymers (FRP) is necessary to improve its behavior such as its load capacity, compressive strength, and ductility. The FRP used in the confinement is modern and wide application composite material in the field of civil engineering, which is pasted by epoxy. The fast impairment of epoxy at high temperatures leads to its replacement with an effective adhesive: geopolymers. This study presents the test result of an experimental investigation on confinement of six square RC columns with dimension (100*100*600mm) with geopolymer jacket under axial load conditions. The parameter considered is the jacketing material used (carbon fiber, plastic mesh, steel wire mesh, jute fiber, glass fiber mesh). Results of the test showed that confinement could improve the stiffness of the column by using a different type of material. The confinement with a carbon fiber reinforced geopolymers jackets can enhance the strength of the column after applying axial loading and improvement the performance of columns, but it is expensive. Where the increase in the load improvement and deformation capacity was (1.59 and 1.97), respectively, and the most effective jacket material in terms of economic cost and best performance in confinement operation consisted of (plastic mesh and steel wire mesh) compared to other types of material, with load enhancement by (1.41 and 1.27) and deformation capacity by (1.86 and 1.50), respectively compared with unconfined RC columns. Finally, the confinement by a different type of fiber-reinforced geopolymer adhesive is the most effective and used in the repair and rehabilitation of RC in the area with high-temperature climates.

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Experimental Investigation of the Axial Load Capacity for DSTCs Manufactured with High Strength Concrete

Ikhlasi

Vincent

2022

Lecture Notes in Civil Engineering

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Effect of void Ratio of Inner Steel Tube on Compression Behavior of Double Skin Tubular Column

Cited by 10 publications

References 9 publications

Fibrous Geopolymer Adhesive Jackets for Confining of Reinforced Concrete Columns

Fibrous Geopolymer Adhesive Jackets for Confining of Reinforced Concrete Columns

Experimental Investigation on RC Columns Confined by Jacket with Geopolymer Adhesive

Experimental Investigation of the Axial Load Capacity for DSTCs Manufactured with High Strength Concrete

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