Sample No.31. 40% London brick + 60% Gravel W/C Ratio 0.50 Observations | ||||||
Cycles | Start | 10 | 20 | 30 | 40 | 50 |
Length (*0.0l mm) | 239 | 249 | 264 | 277 | 256 | 261 |
Weight (g): | 11,769 | 11,774 | 11,777 | 11,778 | 11,777 | 11,778 |
R frequency (Hz): | 4011 | 3523 | 3501 | 3483 | 3421.2 | 3391 |
Dyn. Mod. (N/mm’): | 37,868 | 29,226 | 28,879 | 28,598 | 27,569 | 27,089 |
Reduction in dynamic modulus − 28.46% Increase in length = 0.044% (max 0.076%) | ||||||
Sample No.32. 40% London brick + 60% Gravel W/C Ratio 0.385 Observations | ||||||
Cycles | Start | 10 | 20 | 30 | 40 | 50 |
Length(*0.0lmm): | 265 | 274 | 287 | 299 | 287 | 293 |
Weight(g) : | 11,817 | 11,821 | 11,824 | 11828 | 11,794 | 11,801 |
R frequency(Hz): | 4003 | 3491 | 3427 | 3415 | 3402 | 3382 |
Dyn. Mod.(N/mm’ ) | 37,871 | 28,813 | 27,781 | 27,600 | 27,377 | 27,062 |
Reduction in dynamic modulus = 28.53% Increase in length = 0.056% (max 0.068%) |