Axial compressive behavior of partially CFRP confined seawater sea-sand concrete in circular columns – Part I: Experimental study

Yang, Junlong; Wang, Jizhong; Wang, Ziru

doi:10.1016/j.compstruct.2020.112373

Cited by 20 publications

(14 citation statements)

References 51 publications

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“…Besides, five conditioned ages (0, 60 days, 120 days, 180 days, 360 days) were set to explore the exposure time on the mechanical performance of the specimens. It should be noted that the unconditioned specimens were derived from the authors' previous study [13]. Note: (a) The control specimens were derived from the existing studies conducted by the authors' group [13].…”

Section: Specimens Preparationmentioning

confidence: 99%

“…It should be noted that the unconditioned specimens were derived from the authors' previous study [13]. Note: (a) The control specimens were derived from the existing studies conducted by the authors' group [13]. The same concrete mix proportion was used for all specimens in this study.…”

Section: Specimens Preparationmentioning

confidence: 99%

“…The same raw materials of concrete, CFRP, test setup and instrumentations adopted in the previous study [13] were also used in this test, and both the unconditioned and conditioned specimens were fabricated at the same time to make the results more reliable. The readers may refer to the literature [13] for more details.…”

Section: Materials Properties and Test Setupmentioning

confidence: 99%

See 2 more Smart Citations

Long-Term Performance of Seawater Sea-sand Concrete (SSC) Columns Wrapped with CFRP Strips Under Simulated Marine Environment

Yang

Wang

2022

J. Phys.: Conf. Ser.

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This article presents a durability study of carbon fiber-reinforced polymer (CFRP) partially wrapped seawater sea-sand concrete (SSC) columns exposed to natural seawater to explore the effect of exposure duration on the long-term performance of the specimens. Thirty-two cylinders were wrapped with CFRP jackets and exposed to different times of wet-dry cycles (up to 360 days) in an outdoor simulated marine environment. Test results indicate that exposure has no obvious influence on the failure process and ultimate strains of specimens, but the compressive strengths of confined columns (fcc) increase with the increment of exposure time, especially for the partially confined concrete specimens. Moreover, due to the significant variation of unconfined concrete strength fco*), the retentions of fcc and fcc/fco * exhibit an opposite trend. Therefore, the increase of fco* should be considered when using the parameter of the confined-to-unconfined ratio of strength to evaluate the long-term performance of the specimens.

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Section: Specimens Preparationmentioning

confidence: 99%

Section: Specimens Preparationmentioning

confidence: 99%

Section: Materials Properties and Test Setupmentioning

confidence: 99%

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Long-Term Performance of Seawater Sea-sand Concrete (SSC) Columns Wrapped with CFRP Strips Under Simulated Marine Environment

Yang

Wang

2022

J. Phys.: Conf. Ser.

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“…Composite materials are easily adapted to geometric irregularities and studies to prolong the lifespan of damaged structures and pipelines are presented in the literature (Alexander & Bedoya, 2011;Alexander & Ochoa, 2010;Chan et al, 2015;Chen et al, 2016;Esmaeel et al, 2012;Mohammed et al, 2020;Siwowski & Siwowska, 2018;Subhani & Al-Ameri, 2016). Composite-based repairs have been performed on marine sand concrete pillars with fiber-reinforced polymers (FRP), which are widely used in coastal construction and marine infrastructure (Yang et al, 2020a(Yang et al, , 2020b. Mohammed et al (2020) and Vijay et al (2016) employed FRP-based jackets as a form of repair for structures of steel-concrete.…”

Section: Introductionmentioning

confidence: 99%

CFRP repair effectiveness on compressed steel tubular members with circular cutout

Martinez

Cyrino

Vaz

et al. 2023

Lat. Am. j. solids struct.

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Welding procedures for repairing corroded tubular structures are commonly used; however, composite material repairs are becoming popular since they do not use heat sources that might cause accidents. This paper provides a detailed description of the CFRP patch repair application in steel tubular members with a circular perforation originated from a prolonged corrosion process. The results of experimental tests on midscale unrepaired damaged and repaired steel tubes are reported. The predictions of the maximum loads recovered from a proposed numerical model lie close to the experimental observed values, justifying its usage for analysis of repaired tubular structures with circular cutouts when subjected to axial compression. Compared to unrepaired perforated tubes, the experimental results demonstrate a substantial strength recovery for repaired tubes. The value of this research for the oil and gas industry is that it demonstrates the feasibility of this kind of repair, which means reduced risk to the production unit and a shorter repair period.

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“…Due to the high corrosion resistance of CFRP, its use with marine sandy concrete in coastal and offshore structures construction is promising. In this regard, in [4] and [5], the stress-strain state under axial compression of 40 cylindrical samples made of sea sand concrete, enclosed in a cage made of carbon fibre reinforced plastic, was investigated. The variable parameters were the types of the cage (solid and strip with different stripe pitch) and the number of CFRP layers.…”

Section: Introductionmentioning

confidence: 99%

Erection of solid columns of one-storey industrial buildings with bridge cranes made of high-strength sandy concrete and its economic efficiency

2021

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The use of high-strength sandy concrete (HSSC) is an alternative to high-strength crushed stone. Its use is profitable for those regions of Russia in which crushed stone is an imported building material. Thus, crushed stone is supplied to the Republic of Tatarstan (RT) from the Ural, and the local reserves of sand are significant. Authors presented the results of studies to determine the economic efficiency of solid columns’ erection in one-story industrial buildings with bridge cranes according to the 1.424.1-5 series from HSSC of HSSC60 and HSSC80 classes in comparison with heavy concrete of B20...B80 classes. Studies have shown that in relation to Kazan, the use of HSSC of HSSC60 and HSSC80 classes in comparison with heavy concrete of B20...B40 classes, depending on the size of the span, column spacing, floor height and lifting capacity of cranes, can reduce steel consumption by 43.2…71.5 %. At the same time, the total cost of materials (steel and concrete) when using heavy concrete of B20...B40 classes is 1.7 %...38.1 % lower than with HSSC60 and HSSC80. This is due to the sharp rise in the cost of concrete in the Russian market in the third quarter of 2002 and continuing to the present (second quarter of 2021). When recalculated before the indicated price increase, the use of HSSC60 and HSSC80 in comparison with heavy concrete of B20…B40 classes gives a decrease in the total cost of materials by 1.9...34.5 %. The results obtained are novel because in the scientific and technical literature there is no information about the design of these columns from the HSSC.

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Axial compressive behavior of partially CFRP confined seawater sea-sand concrete in circular columns – Part I: Experimental study

Cited by 20 publications

References 51 publications

Long-Term Performance of Seawater Sea-sand Concrete (SSC) Columns Wrapped with CFRP Strips Under Simulated Marine Environment

Long-Term Performance of Seawater Sea-sand Concrete (SSC) Columns Wrapped with CFRP Strips Under Simulated Marine Environment

CFRP repair effectiveness on compressed steel tubular members with circular cutout

Erection of solid columns of one-storey industrial buildings with bridge cranes made of high-strength sandy concrete and its economic efficiency

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