Analysis of pressure damage characteristics of carbon fibre recycled concrete based on acoustic emission technology Online publication date: Mon, 15-Apr-2024
by Dandan Lv
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 17, No. 2/3, 2024
Abstract: In order to understand the pressure damage of concrete under different levels of carbon fibre content, a method for analysing the pressure characteristics of carbon fibre recycled concrete based on acoustic emission technology is proposed. First is the selection of materials in the preparation of the carbon fibre reinforced recycled concrete and the analysis of the physical properties of different materials. Then, designing the mix proportion and prepare carbon fibre recycled concrete specimens according to different carbon fibre content. Finally, acoustic emission sensors are arranged to collect the damage of carbon fibre reinforced recycled concrete under continuous pressure until the concrete specimen is damaged. The test results indicate that the cumulative acoustic emission energy of concrete specimens with a 3% carbon fibre content is 72,405 dB μs, which is higher than the other two types of specimens, and the Sr value of this specimen is 5.864, which is lower than the other two specimens.
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