Excerpts

As the temperature increased, the residual compressive strength and elastic modulus of concrete generally showed a decreasing trend.

For years, there has been an increasing trend of treating and reusing wastewater and recycling more and more solid waste.

As can be seen in Figure 13 and Figure 14 , this study of the mechanical properties of aged Sikadur (up to 163 days) and Loctite (up to 231 days) shows a clear trend towards a progressive decrease in ultimate tensile strength (UTS) with the exposure time.

As depicted in Figure 8 a, there is a clear trend of the increased adsorption capacity of ARPA with rising temperatures for both dyes, which is indicative of an endothermic adsorption process.

With the increase in temperature and decrease in strain rate, the peak stress shows a decreasing trend.

Moreover, with an increase in CN content, the compressive strength of the cement paste shows an initial increase followed by a decreasing trend.

With the increase in sintering temperature and clay content, the bulk density shows an increasing trend.

Fluence (power*number of passages/scanning speed) positively influences outputs and presents a positive trend.

It can be observed that at the same temperature, the slope of the medium and low power density is larger, which has an extremely significant effect on the welding strength.

From Table 4 , it can be observed that the F-value of the viscosity response model is 92.76, with p < 0.0001, indicating a highly significant impact of the independent variables on viscosity.

A notable trend emerged: a decrease in the w/b led to an increase in the percentage of harmless and less harmful pores while simultaneously decreasing the percentages of harmful and multi-harmful pores.

From 120 ms to 240 ms, when the temperature of the electropulsing treatment is relatively low, the elongation of the material shows an increasing trend, while the tensile strength gradually decreases.

However, the hydrogen yield showed a decreasing trend over time, while methane gradually increased.

The most probable aperture and critical aperture of the pure paste show an increasing trend as the freeze–thaw cycles increase, as shown in Figure 13 a.

With an increasing number of freeze–thaw cycles, there is a decreasing trend in the relative dynamic elastic modulus of the HD–MPCC.

Moreover, upon examination of Figure 12 a,b and comparison of the peak impact load of SFRC beams, it was noted that the peak load exhibited an insignificant effect on the stiffness of SFRC beams as the steel fiber content increased during the impact test, while the peak deflection at mid-span showed a decreasing trend.

Furthermore, the density of the specimens exhibited a decreasing trend as the storage time increased, indicating an increase in porosity.

In the viscoelastic continuum damage (VECD) model, the cumulative damage was related to the modulus, while with the increase of asphaltene and resins, the fatigue life showed a trend of first increasing and then decreasing.

A decreasing trend of both widths of built tracks and their depth of penetration was observed at low volume fractions of 5% and 10% and at high volume fractions of 25% and 30%.

As seen in Figure 10 a, it is evident that with the increase in vibration compaction passes, the TAV amplitude of the mortar shows a decreasing trend and finally tends to be stable.

Also, as the cross-link density of vulcanizates cured in the presence of TMTD and the CBS-TMTD combination showed a decreasing trend with an increasing ratio of EPDM up to the composition of S25–E75, the elongation at break increased in the same direction.

It is interesting that the cross-link density of the materials with CBS showed an increasing trend with an increasing ratio of EPDM in rubber combinations.

The analysis reveals that with increasing spray pressure, residual tensile stresses show a decreasing trend, gradually stabilizing.

The mass percentage of fine and microscopic debris in simulated rock samples gradually decreases, while the mass percentage of medium-sized debris shows an increasing trend.

The adjustment of the second-degree polynomial model was carried out through ANOVA, with a high F-value and low p -value ( p < 0.005), suggesting that the coefficients were highly significant, demonstrating that the developed model provided the best fit [ 99 ].