Study on the Effect of Polypropylene Fibres on the Mechanical and Structural Properties of Early-Age Coral Concrete

DOI

10.2991/978-94-6463-449-5_48How to use a DOI?

Keywords

Coral aggregate concrete; Polypropylene fiber; Structural performance; Scanning electron microscope

Abstract

In the construction of island and reef projects, the use of coral dredged channel to prepare concrete aggregate can effectively solve the problem of raw material shortage, shorten the construction period, reduce the construction cost, and blend a certain amount of fiber into coral concrete, can improve the mechanical structure of coral concrete. The design strength of C30 polypropylene fibre (PF) coral concrete as the object of study, respectively, curing 7d, 14d, 21d, 28d, a total of 20 groups of different specimens, and its mechanical properties of the experimental investigation, and finally the use of FE-SEM scanning electron microscopy to study the microstructure of coral aggregate concrete, analysis of PF enhancement and modification mechanism of coral concrete. The experimental results show that PF can increase the compressive and tensile strength of coral concrete to different degrees, and there is an optimal mixing ratio of PF, and when the mixing ratio of PF deviates from the optimal ratio, the improvement effect on the mechanical properties of coral concrete will gradually decrease. The age of curing has no effect on the damage morphology of coral concrete specimens, and the damage morphology of the fibre-doped specimens is significantly improved compared with that of the ordinary specimens.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xiaofei Zhang
AU  - Zhengliang Dong
PY  - 2024
DA  - 2024/06/30
TI  - Study on the Effect of Polypropylene Fibres on the Mechanical and Structural Properties of Early-Age Coral Concrete
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 486
EP  - 495
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_48
DO  - 10.2991/978-94-6463-449-5_48
ID  - Zhang2024
ER  -