Expansive Behavior in Circular Steel Tube Stub Columns of SCC Blended with CFB Bottom Ashes

Cheng, Zhi; Pei, Xiaobo; Hou, Hua; Han, Tao; Liu, Lan; Wang, Huiqi; Han, Yunshan

doi:10.1061/(asce)mt.1943-5533.0002939

Cited by 9 publications

(5 citation statements)

References 30 publications

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“…At this time, the interface bonding force of the CFST is mainly borne by the chemical bonding force. The main factors affecting the chemical bonding force are cement dosage, concrete strength, and water binder ratio [ 23 ]. The chemical bonding force is small.…”

Section: Resultsmentioning

confidence: 99%

“…The relative amount of slippage became even larger as the load increased from the initial stage. The produce of the slippage means the chemical bonding force failure between the steel tube and the CFB-BA concrete [ 23 ]. In the later loading process, the load remained unchanged.…”

Section: Experiments Partmentioning

confidence: 99%

“…Just like fly ash, CFB-BA also contain SiO 2 and Al 2 O 3 , so it also has pozzolanic activity [ 21 ]. Researches have shown that CFB-BA has expansibility, which is closely related to the content of anhydrite and f-CaO [ 22 , 23 , 24 ]. To avoid the damage caused by expansion, the CFB-BA should be treated or the amount should be controlled during use.…”

Section: Introductionmentioning

confidence: 99%

“…Mechanical grinding is a useful modified method for CFB-BA, which can improve the CFB-BA’s utilization and optimize its performance [ 22 ]. Zhi Cheng et al [ 23 ] studied the expansion and load-deformation behavior of self-compacting concrete-filled steel tube stub column of CFB-BA. The results show that CFB-BA can improve the bearing capacity of concrete-filled steel tube stub columns.…”

Section: Introductionmentioning

confidence: 99%

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Interface Bonding Behavior of Concrete-Filled Steel Tube Blended with Circulating Fluidized Bed Bottom Ash

Liu

Cheng

et al. 2021

Materials

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The interface bonding behavior between the steel tube and the concrete of concrete-filled steel tube (CFST) blended with circulating fluidized bed bottom ash (CFB-BA) was investigated in this study. A total of 8 groups of CFSTs stub columns were prepared with different dosage of CFB-BA, water-binder ratio (W/B), and interface bonding length. A series of push-out tests were carried out to acquire the data representing the interface bonding behavior. The results show that the dosage of CFB-BA has a direct effect on interface bonding behavior of CFST. CFB-BA can improve the interface bonding behavior of CFST. The highest ultimate bonding load and strength are achieved when the dosage of CFB-BA is 30%. When the dosage of CFB-BA increases to 50%, its interface bonding behavior decreases, but is still better than that of CFST without CFB-BA. W/B has a negative correlation with the interface bonding behavior of CFST. While the W/B increases, the interface bonding load and strength of CFST decreases. The increase of the interface bonding length can improve the interface bonding load, but cannot improve the interface bonding strength.

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Section: Resultsmentioning

confidence: 99%

Section: Experiments Partmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interface Bonding Behavior of Concrete-Filled Steel Tube Blended with Circulating Fluidized Bed Bottom Ash

Liu

Cheng

et al. 2021

Materials

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“…The confinement from the steel tube increased the mechanical qualities of the expansive concrete core, and the addition of an expansive agent in CFST may successfully prevent the separation between the concrete infill and the steel tube. According to Cheng et al, 96 who conducted several axial compression tests upon CFST columns with a radial self-stress between 0.61 and 1.31 MPa, concrete self-stress had a considerable influence on the ultimate capacity of concrete-filled steel tube columns. However, excessive self-stress may lower the ultimate load of CFST columns due to premature crushing of concrete.…”

Section: Expansive/self-stressing Concrete As Infill Materialsmentioning

confidence: 99%

A review on the performance of concrete filled tubular columns under axial compression: Emphasis on geometrical parameters and various concrete infills and encasings

Rohilla,

Gupta

2023

Structural Design Tall Build

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SummaryThis paper summarizes the literature available on the behavior of concrete‐filled steel tubular (CFST) columns to evaluate the effect of geometrical properties such as shape of cross‐section, diameter‐to‐thickness ratio, and length‐to‐diameter ratio of CFST columns under axial loading. Then, the impact of different material composition for core concrete and encasing material is concluded for columns under axial loading. The performance of CFST is evaluated in terms of failure modes, ductility, stiffness, and axial compressive strength. For encasing tube, carbon steel, stainless steel, and aluminum are studied while for core, various concretes such as Normal (NSC) and high strength concrete (HSC), light weight concrete (LWC), recycled aggregate concrete (RAC), expansive concrete (EC), rubber crumb concrete(RuCC), and steel slag concrete (SSC) are covered for review in this paper. Material limitations as provided by various codes for design of composite structures is also mentioned for both tube and core concrete. Failure modes of concrete‐filled tubular(CFT) columns are most affected by geometric properties columns while materials used for concrete and encasing tube do not cause much difference. Though, ductility, axial compressive strength, and stiffness are affected by both geometric and material properties.

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Mechanical, Structural and Microstructural Properties of CFB Desulfurization Slag and Silico-Manganese Slag Based-Geopolymer Pastes

Cheng

Cheng²,

Cheng³

et al. 2022

Silicon

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Expansive Behavior in Circular Steel Tube Stub Columns of SCC Blended with CFB Bottom Ashes

Cited by 9 publications

References 30 publications

Interface Bonding Behavior of Concrete-Filled Steel Tube Blended with Circulating Fluidized Bed Bottom Ash

Interface Bonding Behavior of Concrete-Filled Steel Tube Blended with Circulating Fluidized Bed Bottom Ash

A review on the performance of concrete filled tubular columns under axial compression: Emphasis on geometrical parameters and various concrete infills and encasings

Mechanical, Structural and Microstructural Properties of CFB Desulfurization Slag and Silico-Manganese Slag Based-Geopolymer Pastes

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