Barely Significant

Excerpts

4,562 sentences · 1 filter applied

(e) The percent changes in tearing energy and IR absorbance peak height between 10 and 100 mm·min −1 deformation speeds as calculated in Equations (5) and (6), respectively, at any defined initial oil concentration after the incidence of rupture revealed an interesting trend.
For the early-age strength of all samples, before 28 days, compressive strength and flexural strength, when increasing limestone powder content, showed a trend of first increasing and then decreasing, which is consistent with previous studies from other composite cementitious materials mixed with limestone powder [ 31 , 32 ].
Indeed, hardened concrete (sound or damaged) exhibits a smooth curve with a slightly increasing trend for phase velocity, especially for the low frequency range [ 9 , 17 ], while the few experimental results as well as simulations concerning liquid matrix (fresh concrete) imply an opposite trend and showcase much stronger dispersion exhibiting even “resonant peaks” of phase velocity and attenuation [ 8 , 10 ].