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- W2356446499 abstract "The attenuation of ultrasonic pulse velocity in various-size concrete specimens under uniaxial compression loading is investigated.Tests were conducted on prisms of 25 cm×25 cm×50 cm fabricated with dam concrete(maximum aggregate of 80 mm),and standard 15 cm×15 cm×30 cm prisms,10 cm×10 cm×20 cm prisms which were made with the wet-screened components of dam concrete.First of all,special plots,showing the relation between the velocity through concrete and the stress during loading,have been introduced.Then a damage variable is defined based on the ultrasonic velocity attenuation and used to describe the growth law of damage during loading.At last,a general method to evaluate the evolution of crack in concrete is presented.Results show that the rule of ultrasonic propagation in concrete is apparently affected by the scale effect and the effect of wet screen sieve of aggregate.These conclusions proposed can be applied to determining the extent of damage of mass concrete due to the complex load and other environmental effects." @default.
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- W2356446499 date "2007-01-01" @default.
- W2356446499 modified "2023-09-25" @default.
- W2356446499 title "Ultrasonic pulses behavior in various-size concrete specimens under compression" @default.
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