Excerpts

For maintenance periods of 7 and 28 days, E 50 exhibits a decreasing trend with increasing CO 2 foam dosage, peaking at 36% foam doping.

The data indicate that maintenance age significantly influences compressive strength, which exhibits an increasing trend over time.

The incorporation of SSMP resulted in a decreasing trend in material strength at 1 day, with a more pronounced decrease observed with higher content.

The fluorescence intensity of the TPTc-DBD solution showed a trend of increasing and then decreasing with the increase in the volume fraction of water, and the emission wavelengths gradually red-shifted at the same time.

At each fixed laser power level, the resistivity showed an increasing trend with the increase in scanning speed.

Within the range of S/B from 0.8 to 1.4, the enhancement effect of the S/B ratio on the early strength (7-day) showed a decreasing trend, while the improvement in the later strength (28-day) was most significant when S/B was between 1.0 and 1.2.

Concrete Deterioration Damage Under Freeze-Thaw Cycles-Loaded-Landfill Leachate Coupling Under freeze-thaw cycles, 40% loading, and landfill leachate coupling, the concrete mass showed a decreasing trend with an endpoint mass loss of 3.35% ( Figure 6 a), which was substantially higher than that of the landfill leachate group (0.54%) and the 40% loading and landfill leachate coupling group (0.72%).

The measured surface microhardness values for these four samples are 192.4 ± 6.9 HV, 182.3 ± 2.8 HV, 178.9 ± 2.9 HV, and 166.9 ± 0.3 HV, respectively, indicating a decreasing trend in microhardness.

All compositions exhibited a decreasing trend in the relative viscosity as a function of the shear rate, confirming their pseudoplastic (shear-thinning) behavior; all the systems represent non-Newtonian fluids (the viscosity decreases with an increasing shear stress value) [ 37 ].

Following primary forming at 500 °C and subsequent annealing, density exhibited a decreasing trend with increasing silicon content, as illustrated in Figure 7 .

In contrast, when 2% steel fibers are combined with PE fibers, the energy dissipation coefficient shows an increasing trend.

Figure 8 e–g show that for the FA-modified lateritic clay, the peak strength and deformation modulus of the modified red clay basically show an increasing trend when the addition amount was increased from 1% to 5%.

It should be noted that these values may be significant from the point of view of the phenomena that accompany tissue hypoxia, such as the accumulation of mitochondria near the capillary or the release of oxygen by myoglobin.

At 1350 °C, significant grain coarsening occurred in all experimental steels, with equivalent circular diameters showing an increasing trend as Cr content rose.

Between 25 and 48 h, the enrichment is growing but at a slow rate; (4) Li + concentration in catholyte solution rises almost linearly with a significant trend; and (5) the BayesGLM predictive model confirmed that among all environmental factors considered, the increasing voltage induced a linear ascending trend of Li + migration in the catholyte chamber, with the highest effect observed at 25 h.

Nevertheless, M7 exhibited a negative trend that increases with voltage, indicating a rising Δ 7 Li value.

As shown in Figure 11 , a comparison of silicon and calcium concentrations across different samples reveals a clear trend: increasing desert sand content corresponds to a higher silicon weight percentage, indicating a direct correlation between silicon content and desert sand proportion. 6.2.

Figure 9 illustrates the distribution of primary Si relative to front velocity, showcasing a notable trend: as velocity increases, the percentage of fine primary Si rises, while that of coarse primary Si diminishes, in both the stirred and non-stirred parts, indicating the refinement of primary Si with heightened front velocity in the stirred and non-stirred parts.

Since the inhibitory effect of salts on the hydration process is greater than their effect on early strength enhancement, the compressive strength shows a decreasing trend [ 49 ].

Data collected from multiple studies reveals a clear trend: as the height and slenderness of the structure increases, the vibration period increases as well.

Figure 5 c shows that the 5 °C ductility exhibits a decreasing trend with increasing waste LDPE doping, and that it even falls below that of the virgin binder after exceeding 4% waste LDPE doping, indicating that waste LDPE weakens the low-temperature performance of asphalt.

In the P area, as the CSA content increases (P-00 → P-10 → P-20), the intensity of the characteristic peak for AFt at 1111 cm −1 shows an increasing trend, while the absorption peak of ye’elimite at 616 cm −1 does not significantly weaken.

After that, a decreasing trend was registered before the material reached stability.

Such a negative trend can be eliminated by modifying the fibre surfaces [ 11 , 34 , 47 , 48 , 49 ].

The results indicated a positive trend in the enhancement of mechanical properties as the filler concentration increased.