Closure to “
            <i>Optimum Design of Prestressed Concrete Tension Members</i>
            ” by Antoine E. Naaman (August, 1982)

Naaman, Antoine E.

doi:10.1061/(asce)0733-9445(1983)109:10(2477.2)

Cited by 3 publications

(4 citation statements)

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“…Also, prestressing tendons are widely famous in seismic design for tensile and compressive zones and confinement functions. This use of prestressing tendons in seismic contributes to better ductility of members [9]. Several types of tendons and anchorage are manufactured, such as Arapree tendon, FiBRA tendon, Carbon Stress, Leadline Tendon, Technora Tendon, CFCC Tendon, and Parafil Tendon, which have different physical properties [10].…”

Section: Tendons Used In Prestressed Concretementioning

confidence: 99%

Strength, Serviceability, and Anchorage of Fiber-Reinforced Polymer and Carbon Fiber Composite Prestressing Tendons

Lucena,

Carabbacan,

Manggapis

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Carbon fiber reinforced polymer (CFRP) and Carbon Fiber composite cable (CFCC) are common types of prestressing member reinforcement. This paper determines the properties of CFRP and CFCC in terms of strength limit, serviceability, and anchorage, which are the primary considerations in designing tendons. The first method in conducting this review is formulating research questions concerning the innovative materials in prestressing tendons and determining behavior and physical properties. The execution used the three-step procedure to retrieve a publication or journal relevant to prestressed concrete tendons and research databases like Google Scholar and EBSCO. In the consolidation of results, it has been found that CFRP exhibits higher tensile strength than CFCC. The serviceability and performance of both CFRP and CFCC were the same as traditional steel reinforcement used in prestressed beams. In anchorage of CFRP and CFCC, the composite bonding wedge is observed to be 100% efficient since it has the same stress capacity as the CFRP tendon.

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Section: Tendons Used In Prestressed Concretementioning

confidence: 99%

Strength, Serviceability, and Anchorage of Fiber-Reinforced Polymer and Carbon Fiber Composite Prestressing Tendons

Lucena,

Carabbacan,

Manggapis

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Section: Strengthening Mechanism Of Frcmentioning

confidence: 99%

“…Based on the CMMT, FRC can be simplified into two phases: concrete and fiber. [ 160,161 ] The theoretical research is based on the following hypothetical conditions: (1) the fibers are arranged continuously and uniformly in parallel along the stress direction. (2) The fiber and matrix are well bonded, the strain of each point in concrete is equal, and there is no slip between each other.…”

Section: Chicken Feathers For Concretementioning

confidence: 99%

Recycling of chicken feathers

Xu,

Shan,

Chen

et al. 2024

Carbon Neutralization

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The extensive consumption of chicken has resulted in the emergence of a significant environmental issue in the form of chicken feather waste. As such, there is an urgent need for the development of green treatment and recycling methods for chicken feathers. Chicken feathers can serve as a type of heteroatomic doping carbon source, making them an excellent candidate for the electrode materials used in electrochemical energy devices. Furthermore, their unique structures and functional groups make them highly promising for use as adsorbents, electronics, and building materials. In this paper, we provide a summary and review of recent progress made in the use of chicken feathers for energy and environmental applications. Based on the theoretical knowledge and practical applications presented in this review, promising green recycling processes of chicken feathers can be developed. These processes can help to reduce environmental pollution and promote sustainable development.

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“…Little work has been published on the use of fibres in high strength concrete [1,2]. Here high strength indicates strengths in compression of the order of 10 to 15 ksi (69 to 104 MPa).…”

Section: Introductionmentioning

confidence: 99%

Effect of pressure after casting on high strength fibre reinforced mortar

Delvasto¹,

Naaman²,

Throne³

1986

International Journal of Cement Composites and Lightweight Conc

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Synopsis This study investigates the effects of applying pressure after casting on the flexural response of high strength fibre reinforced mortar in which up to 5% fibres by volume were premixed. High mortar strength was achieved by reducing mix porosity (low water-cement ratio), adding fly ash and using superplasticisers. Variables included eight different types of fibre, their volume fraction in the mix, two mortar matrices, two values of pressure after casting, and the casting orientation. It is found that pressure improves the proportional limit and the flexural strength of the composite but may lead to a deterioration in its postcracking response and toughness. Composite moduli of rupture of more than 5000 psi (37 MPa) are observed with steel fibres while highest toughness indices of up to 90 are reported with polypropylene fibres. It is concluded that the application of pressure after casting to improve composite properties is not economically justifiable.

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Closure to “ Optimum Design of Prestressed Concrete Tension Members ” by Antoine E. Naaman (August, 1982)

Cited by 3 publications

References 0 publications

Strength, Serviceability, and Anchorage of Fiber-Reinforced Polymer and Carbon Fiber Composite Prestressing Tendons

Strength, Serviceability, and Anchorage of Fiber-Reinforced Polymer and Carbon Fiber Composite Prestressing Tendons

Recycling of chicken feathers

Effect of pressure after casting on high strength fibre reinforced mortar

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