Affiliation:
1. School of Water Conservancy and Environment Engineering, Zhengzhou University, Zhengzhou 450001, China
2. Department of Civil Engineering, Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450015, China
Abstract
The fracture parameters and fracture relational curves of the concrete containing nano-SiO2and fly ash with different relative notch depth of the notched beam specimens were measured by means of three-point bending method. The results indicate that the relative notch depth of the notched specimens has great effect onac,KICini,KICun,GF,CMODc, and the fracture relational curves of the concrete containing nano-SiO2and fly ash. There is a tendency of increase inacandCMODcwith the increase of relative notch depth, whileKICini,KICun, andGFare decreasing gradually with the increase of relative notch depth of the notched beam specimens. Besides, when the relative notch depth increases from 0.2 to 0.5, the nonlinear stage of the curve becomes shorter and shorter, and the descent stage of the curve becomes sharper and sharper. The fracture parameters ofac,KICini,KICun,GF, andCMODcand the fracture curves are sensitive to the relative notch depth, whileCTODcmay be not sensitive to the relative notch depth of the specimens of the concrete containing nano-SiO2and fly ash.
Funder
National Natural Science Foundation of China
Subject
General Materials Science
Cited by
69 articles.
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