1. Institute of Geophysics and Geomatics,China University of Geosciences(Wuhan),Wuhan 430074,China 2. College of Marine Science and Technology,China University of Geosciences(Wuhan),Wuhan 430074,China
Concrete is the main material in construction engineering,and its quality is closely related to people's life and property.The strength grade is an important indicator of the quality of the concrete,so the strength of the concrete structure needs to be tested. In this paper,the surface wave velocity inversion is realized by the least square method to obtain the shear wave velocity structure of the target concrete structure,the strength value is calculated based on the elastic modulus method and the power function fitting method,and then the concrete strength is evaluated.The results are as follows:First,the shear wave velocity structure of concrete structure can be obtained effectively by using the ultrasonic surface wave method.Second,both the elastic modulus method and the power function fitting method can evaluate the strength of concrete,which is effective and the elastic modulus method can meet the actual accuracy requirements,thus providing a new way for the quality detection of concrete.
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