Spun Concrete Poles for Electrical Transmission Structure Applications — Continuing to Push the Envelope of the Technology

Oliphant, Wesley J.; Wong, C. Jerry

doi:10.1061/40642(253)20

Cited by 5 publications

(5 citation statements)

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“…In 1907, in Europe (Germany), the first centrifuges for making hollow spun concrete elements were made. This modern technology of spun concrete production was first used for making the supports for overhead power lines [1]. Later, this advanced technology was used in other countries (e.g., France and Belgium) for making poles, pressure pipes, columns, beams and other members and structures.…”

Section: Introductionmentioning

confidence: 99%

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Reinforced Spun Concrete Poles—Case Study of Using Chemical Admixtures

2020

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The current research paper is focused on the experimental investigation of features of chemical admixtures (superplasticizers C-3, ‘Dofen’ and formaldehyde resin ACF-3M) utilizing in reinforced spun concrete structures. For the sake of comparison, the results of studying the effects of chemical admixtures on physical and mechanical properties on vibrated and spun concrete are provided. As a separate part of spun concrete products, the supporting poles of overhead power lines are introduced. The results obtained indicate, that the positive effect of chemical admixtures for spun and vibrated concrete is most pronounced at an early age of concrete. The effective amount of chemical admixtures for spun concrete is 0.15% of cement mass when formaldehyde resin ACF-3M and 1% of cement mass when superplasticizers C-3 and ‘Dofen’ are used. Moreover, the brief review about the reinforced spun concrete members is provided.

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Section: Introductionmentioning

confidence: 99%

“…The production and use of these structures in power transmission systems had increased considerably in this country since the mid-1970s. The "state-of-art" of the technology of spun concrete poles for applying the electrical transmission structures in USA was described by W. Oliphant and C. J. Wong [1].…”

Section: Introductionmentioning

confidence: 99%

Reinforced Spun Concrete Poles—Case Study of Using Chemical Admixtures

2020

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“…There was much research during the 1950 s and 1970 s into the mechanical and technological properties of centrifuged concrete, at a time when increasing overhead powerlines were being erected throughout the world, which required a commensurate number of poles to support centrifuged power lines [3,20,21]. Nevertheless, evidence for the influence of longitudinal and transverse reinforcements on the mechanical properties of centrifuged concrete during production is mostly absent in scientific literature.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Properties of Centrifuged Concrete in Reinforced Concrete Structures

et al. 2020

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This article explores the influence of transverse reinforcement (spiral) and high-strength longitudinal reinforcements on the physical-mechanical properties of centrifuged annular cross-section elements of concrete. The test results of almost 200 reinforced, and over 100 control elements are summarizing in this article. The longitudinal reinforcement ratio of samples produced in the laboratory and factory varied from 1.0% to 6.0%; the transverse reinforcement ratio varied from 0.25% to 1.25%; the pitch of spirals varied from 100 mm to 40 mm and the concrete strength varied from 25 MPa to 60 MPa. Experimental relationships of coefficients for concrete strength, moduli of elasticity and limits of the longitudinal strain of centrifuged concrete in reinforced concrete structures in short-term concentrically compression were proposed.

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“…The round cross section, which is dictated by the manufacturing process in the case of spun concrete, offers a number of advantages, including a smooth finish, denser concrete material, reduced wind pressure, and improved aesthetics. [5][6][7][8] -…”

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confidence: 99%