Fracture characteristics of iron tailing sand concrete under three-point bending beam method

Yao Zhang; Hongzhen Kang; Weihua Ma

doi:10.1117/12.2639329

29 April 2022 Fracture characteristics of iron tailing sand concrete under three-point bending beam method

Yao Zhang, Hongzhen Kang, Weihua Ma

Proceedings Volume 12255, 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022); 122551T (2022) https://doi.org/10.1117/12.2639329
Event: 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022), 2022, Chongqing, China

Abstract

The paper carries out the study of iron tailing sand concrete from the perspective of fracture mechanics. The three-point bending beam method was used to conduct fracture tests on iron tailing sand concrete and river sand concrete, and the P-CMOD curve and P-ε curve of each group of specimens were measured to determine the initial cracking load, unstable cracking load, initial cracking toughness and unstable cracking toughness. Comparing the test processes and fracture parameters of each group of specimens, it was found that there was no significant difference between the fracture processes of the two concretes, and the initial cracking load, unstable cracking load, initial cracking toughness and unstable cracking toughness of the iron tailing sand concrete were higher than those of the river sand concrete, among which the initial cracking load and initial cracking toughness increased significantly.

Citation Download Citation

Yao Zhang, Hongzhen Kang, and Weihua Ma "Fracture characteristics of iron tailing sand concrete under three-point bending beam method", Proc. SPIE 12255, 2022 International Conference on Optoelectronic Information and Functional Materials (OIFM 2022), 122551T (29 April 2022); https://doi.org/10.1117/12.2639329

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