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Analysis of Damage Characteristics of Steel Fiber-reinforced Concrete Based on Acoustic Emission by Huilan Ren; Tao Li; Jianguo Ning; Shuizhou Song is a Engineering article available to read on EtoBox.

What is Analysis of Damage Characteristics of Steel Fiber-reinforced Concrete Based on Acoustic Emission about?

Steel fiber-reinforced concrete (SFRC) has been widely used as a building material worldwide. The macroscopic destruction of this material is a manifestation of the internal microdamage evolution. Hence, investigating the internal damage evolution process in concrete for monitoring in-service concrete has considerable significance in terms of safety. This study investigates the damage characteristics of SFRC with different steel fiber contents (0, 15, 30, 45, and 60 kg/m 3 ) using Brazilian disk splitting tests and acoustic emission (AE) techniques. The changing trend of the characteristic parameters (counts and energy, respectively) of AE signals throughout the failure process of concrete is analyzed. Then, the moment tensor method is used to determine the temporal and spatial evolution of microcracks in SFRC. Research results show that the AE characteristic parameters are closely related to the internal damage of concrete specimens, and show different characteristics of AE signals in different failure stages. When the matrix cracks, the AE counts become denser, the values increase sharply, and the energy is closely related to fiber content (the lower the fiber content, the higher

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Author

Huilan Ren; Tao Li; Jianguo Ning; Shuizhou Song

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)