Excerpts

The 3-day and 7-day compressive strengths of the machine-made sand showed a trend of increasing and then decreasing with the increase of stone powder content.

We then found that with the increase in NTO content, cast-PBX showed a trend of first increasing and then decreasing in terms of mechanical properties, specific heat capacity (Cp) and thermal conductivity (λ).

With the increase in NTO content in the cast-PBX, the measured detonation velocity showed a decreasing trend.

Considering the absolute values, it is clear that the higher the Cu or As(V) concentrations added, the higher the adsorption for all soils, while the adsorbed percentage shows a decreasing trend.

However, not only the penetration into the sample occurred but also the action of the sodium or potassium hydroxide solution induced quite significant changes to the structure of the samples themselves and a gradual transformation of the CSH gel into a CASH gel of very fine structure.

With the increase in powder content from 1.2% to 4.0%, chemical bond G d and friction bond τ 0 showed a decreasing trend.

With the increase in the differential dosage from 1.2% to 4.0%, the obvious “peak and valley” before reaching the maximum load showed a trend of first increasing and then decreasing.

A total of 4352 publications on fly ash-based geopolymer were collected between 1998 and 2022, with an increasing trend year by year.

In the initial 40 days of immersion, the tensile strength showed a decreasing trend.

All the results shown in Figure 6 [ 45 , 46 , 47 , 48 ] follow a decreasing trend in terms of strength.

With the increase of the test temperature, the energy-storage density and efficiency showed a trend of first increasing and then decreasing, and the maximum energy-storage density was obtained when the test temperature was 100 °C.

The average friction coefficient of the coating showed a trend of decreasing and then increasing with the increase of the bias voltage.

Such dependence was typically ignored in previous works but may be significant at high irradiation doses, as we demonstrate with basic TTM calculations for ruthenium, palladium, and gold elemental metals.

It is clearly seen that, according to the totality of the data obtained, the most unsatisfactory creep performance was found in the oriented composite fibers with the introduction of both types of the nanodiscs—with a fairly significant decrease in the accumulated strain, the lifetime of such samples drops by almost 10 times and the strain rate increases by almost 6 times (compared to a pure HDPE fiber).

It can be seen that ( Figure 5 b), rubber-based fibrous concrete showed a decreasing trend of compressive strength ranging from 46.34 to 39.75 MPa while increasing rubber content from 5 to 20%.

The 7 d and 28 d compressive strengths of the ISD admixture showed a trend of increasing and then decreasing with the increase in the proportion of iron tailings.

Geopolymer-stabilized soils show a slight erosion-deterioration phenomenon in a sulfate environment, and their masses generally show a slightly increasing trend (less than 1.82%).

The strength of the Al-Si-Cu-Mg alloy showed a trend of first increase and then decrease, and the best effect was achieved when the Cd content was 0.3% [ 9 , 25 ].

However, the critical failure strain shows a decreasing trend with the increased W content.

The linear slope of yield strength with respect to strain rate shows a slightly increasing trend with increasing W content, indicating that the sensitivity of the materials to strain rate increases slightly with increasing W content.

The stress triaxiality shows an increasing trend upon continuous loading.

The CMS and TS tests both indicated an increasing trend in progress over time.

With the increase in the incorporated amount, the flowability of several cement-based materials shows a decreasing trend.

As shown in Figure 4 , the thermal conductivity and viscosity of LSR monotonically increased with the increase in the Al 2 O 3 content, and such an increasing trend is more obvious at a higher Al 2 O 3 loading amount.

(1) In the closed system, the yield of gaseous hydrocarbon from oil shale pyrolysis shows an increasing trend, while the yields of light and heavy oil first increase and then decrease.