dynamic modulus of elasticity


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dynamic modulus of elasticity

The modulus of elasticity of a test specimen which is computed from physical characteristics of the specimen (size, weight, and shape) and from its fundamental frequency of vibration.
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After enduring 300 freezing-thawing cycles, the relative dynamic modulus of elasticity of UHPCs normally did not decrease, and the mass losses were less than 0.5% [18, 19].
Results of the dynamic modulus of elasticity are shown in Table 3.
Ultrasonic pulse velocity, dynamic modulus of elasticity, compressive strength and fluorescence test methods were applied for structure analysis of UHPC after cyclic salt-scaling.
Concrete prisms with size of 100 mm x 100 mm x 400 mm (to determine the weight loss and the dynamic modulus of elasticity) were prepared.
Weight Loss and Dynamic Modulus of Elasticity. The relative weight loss and the relative dynamic modulus of elasticity ([E.sub.d]) of RCC with F-T cycles in water and KAc solution are shown in Figure 3.
Impact of Temperature on the Dynamic Modulus of Elasticity. The dynamic modulus is one of the main contents of frozen soil research [17].
The results of ultrasonic impulse velocity, dynamic modulus of elasticity and compressive strength tests are presented in Table 4.
The freeze-thaw resistance was measured by using the test method for rapid freezing and thawing in water, and the main test apparatuses were the rapid freeze-thaw test machine, the tester of the dynamic modulus of elasticity, the hydraulic universal test machine, and the balance.
Concrete specimens were fabricated in a cylindrical ([empty set] 100 mm x 200 mm) and cuboidal (100 x 100 x 400 mm) mould for chloride migration test and relative dynamic modulus of elasticity test, respectively.
After reaching a predefined number of freeze-thaw cycles, concrete specimens were taken out of the testing set-up, and relative dynamic modulus of elasticity was determined, which aims to evaluate the frost damage of concrete after different freeze-thaw cycles.
where [E.sub.fr] dynamic modulus of elasticity of log based on resonance vibration, p green density of log, l = length of log, and f = fundamental resonance frequency of log.
Both mass loss and loss of dynamic modulus of elasticity were checked for the standard samples.

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