Experimental Study on Working Stress of Concrete Based on Ultrasonic Testing

Abstract

naturally cured to different ages, to acquire the ultrasonic wave velocity of the test blocks under different ages and working stresses. On this basis, the authors analyze how the ultrasonic wave velocity changes with the age and working stress, and fit the relationship between working stress of concrete and ultrasonic wave velocity. The results show that the ultrasonic wave velocity grows with the age of concrete, but the growth rate slows down over time; the working stress of the concrete has a good correlation with the ultrasonic wave velocity, and the relationship between working stress and ultrasonic wave velocity is well described by the linear function and quadratic polynomial function.