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Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout1.32 MB
Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout
Advances in civil engineering, Vol.2023, 5552990
11/09/2023
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Abstract
To make the bearing capacity tests safer and more affordable for prestressed high-strength concrete (PHC) piles, this paper proposes a reaction device for anchor piles filled with core grout based on the geometric and mechanical characteristics of PHC piles. The proposed reaction device has the advantages of convenient construction, strong controllability of the connection quality and low cost. In addition, the pile will not experience prestress unloading or tensile stress under the effect of the upward pulling load. To promote the application of the reaction device developed for PHC pile bearing capacity tests, experimental studies are conducted on the bonding performance between the core grout and the inner wall of the PHC pile. The influence of various factors such as the strength of the core grout, the grouting length, the curing time, and the inner diameter of the PHC pile on the bond strength between the core grout and the inner wall of the PHC pile are investigated. Results show that as the inner diameter of the PHC pile increases, the bond strength between the core grout and the inner wall of the PHC pile decreases with a maximum difference of 5%. The bond strength decreases as the grouting length increases, and gradually stabilizes, with a difference of no more than 10% between the maximum and minimum bond strength values. The higher the strength of the grout is, the greater the bond strength between the core grout and the inner wall of the PHC pile is. The bond strength between the core grout and the inner wall of the PHC pile increases with the increase of the curing time within 28 days of curing, and the bond strength at 3 days meets the requirements of the PHC pile bearing capacity test.
Details
- Title
- Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout
- Creators
- Xiaosan Yin - Zhongyuan University of TechnologyJimin Li - Zhongyuan University of TechnologyGuoyang Fu - Southern Cross University
- Contributors
- Paul Awoyera (Editor)
- Publication Details
- Advances in civil engineering, Vol.2023, 5552990
- Publisher
- Hindawi Limited
- Identifiers
- 991013140009002368
- Copyright
- Copyright © 2023 Xiaosan Yin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article