At the same time as the UPV testing, resonant frequencies of the
prism specimens were taken. Three prisms were tested and three
readings for each specimen were taken. The average resonant frequencies
(n), weight (w) and length (L) were obtained. The dynamic
modulus of elasticity, Ed,r, and Poisson’s ratio, mr, were
calculated using Eqs. (5) and (6), respectively, and the results are
given in Table 4. Also, from Eq. (7), a value of 45.13 GPa was predicted
for the 28 day static modulus of elasticity.
At the same time as the UPV testing, resonant frequencies of the
prism specimens were taken. Three prisms were tested and three
readings for each specimen were taken. The average resonant frequencies
(n), weight (w) and length (L) were obtained. The dynamic
modulus of elasticity, Ed,r, and Poisson’s ratio, mr, were
calculated using Eqs. (5) and (6), respectively, and the results are
given in Table 4. Also, from Eq. (7), a value of 45.13 GPa was predicted
for the 28 day static modulus of elasticity.
การแปล กรุณารอสักครู่..