Performance of precast hollow steel-encased high-strength concrete piles

Thusoo, Shreya; Kôno, Susumu; Hamada, Junji; Asai, Yoichi

doi:10.1016/j.engstruct.2019.109995

Cited by 15 publications

(2 citation statements)

References 14 publications

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“…The authors used the following two types of steel fibers: straight and bundled. The authors used different dosages of steel (20,30,40, and 50 kg/m 3 ) and polypropylene fibers (5, 10, 15, and 20 kg/m 3 ). The mechanical properties of the resulting compositions were studied both in the fresh state and after hardening.…”

Section: Structures Using Variatropic Concretementioning

confidence: 99%

Analytical Review of the Current State of Technology, Structure Formation, and Properties of Variatropic Centrifugally Compacted Concrete

Shcherban’,

Stel’makh,

Mailyan

et al. 2024

Materials

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Current regulatory documents and the scientific literature lack a theoretical framework and practical guidance for calculating centrifugally compacted reinforced concrete structures, taking into account the variatropy of their structure and the material’s characteristics across the section. A problem related to this research lies in the need to form a systematized, theoretical, and practical knowledge base about variatropic concretes, the importance of which has been proven by various scientists without, to date, the creation of a unified scientific methodological base. The importance of this study is linked to the need for the world’s construction projects and processes to transition to the most economically, materially, and resource-efficient types of building structures, which, of course, include structures made of variable-type concrete. This study’s objective is to fill these scientific and engineering gaps. The purpose of this study was to systematize the existing knowledge base about the technology, structure formation, and properties of variatropic concrete, using an analytical review of previously conducted studies by ourselves and others, both in Russia and abroad. A theoretical justification for the formation of the structure of variatropic materials is presented. An analysis of the basic physical and mechanical properties of variatropic concretes is carried out and the features of their microstructures are considered. The main structures created using centrifugation technology are considered. Variatropic concrete has an increased amount of mechanical characteristics compared to traditional concrete, on average by up to 45%. The durability of variatropic concrete is improved, on average, by up to 30% compared to conventional concrete.

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Section: Structures Using Variatropic Concretementioning

confidence: 99%

Analytical Review of the Current State of Technology, Structure Formation, and Properties of Variatropic Centrifugally Compacted Concrete

Shcherban’,

Stel’makh,

Mailyan

et al. 2024

Materials

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show abstract

“…Akiyama et al [11] conducted bending tests on a new type of prestressed hollow RC pile and demonstrated that a sufficient lateral confinement of high-strength concrete provided by high-strength spirals and carbon-fiber sheets, combined with concrete infilling could substantially increase the flexural capacity of hollow RC piles. Thusoo et al [12] investigated the flexural performance of hollow spun steel-encased high-strength concrete piles and found that core-filled piles had a better ductility because the infilling material provided confinement to the high-strength concrete layer and prevented the spalling of inner concrete. Irawan et al [13] studied the effect of infilling concrete on the flexural performance of PHC piles and concluded that the ductility of PHC piles was increased by infilling concrete into the pile core, while the failure of PHC piles was triggered by the fracture of prestressing steel bars.…”

Section: Introductionmentioning

confidence: 99%

Flexural performance of pretensioned centrifugal spun concrete piles with combined steel strands and reinforcing bars

Ren

Chen

et al. 2021

Structures

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Behavior of laterally loaded cast-in-place (CIP) piles with double steel casings embedded in bare hard rock in deep water areas

Chang

Wang

et al. 2023

Computers and Geotechnics

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Performance of precast hollow steel-encased high-strength concrete piles

Cited by 15 publications

References 14 publications

Analytical Review of the Current State of Technology, Structure Formation, and Properties of Variatropic Centrifugally Compacted Concrete

Analytical Review of the Current State of Technology, Structure Formation, and Properties of Variatropic Centrifugally Compacted Concrete

Flexural performance of pretensioned centrifugal spun concrete piles with combined steel strands and reinforcing bars

Behavior of laterally loaded cast-in-place (CIP) piles with double steel casings embedded in bare hard rock in deep water areas

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