Search results

The main properties of bitumen and the grain composition of mineral materials are presented in Table 1 and Table 2, respectively.
At the same time, in a number of works it is noted [26…28] that the process of bitumen self-healing can occur at the molecular level due to reversible hydrogen bonding with the formation of new crosslinks and chains through ditopic and tritopic molecules [28].
In the relaxation theory of adhesion [35], the influence of the processes of occurrence of internal stresses and deformations on the adhesion strength is considered, which is expressed in a change in the number of bonds that provide adhesion.

According to Sheryl formula, the choice of three peaks, calculated the average grain nano-ZnO was about 32nm.
Charge and Discharge Fig. 4 Curves of discharge capacity vs cycle numbers Figure 4 shows the discharge capacity curves of the zinc electrodes of the different components at different cycles.
As the number cycles of charge/discharge increase, all of the discharge capacity of the zinc electrodes was declined quickly.

Improving coal gangue utilization rate can effectively reduce the oxidation of coal gangue, spontaneous combustion, resulting in a large number of atmospheric pollutants, reduce the water body pollution.
The specific performance in sustainable development are: industry should yield low consumption, energy should be clean utilization, grain to ensure long-term supply, population and resources should maintain relative balance, economic and social coordinated development and the environment.
Circular economy is an efficient use of resources and recycling as the core, with "brief quantification, recycle, resource is changed" for the principle, with low consumption, low emission, high efficiency as the basic features, consistent with the concept of sustainable development of ecological economic growth pattern, is a "mass production, mass consumption, a large number of abandoned" the traditional growth pattern and the" end of governance" the fundamental change of mode.

Since the material undergoes severe plastic deformation at high temperatures, the FSW process generates a fine grain structure in the centre of welds, which has been ascribed to dynamic recrystallisation.
Furthermore, in a number of studies [12-14] the tensile properties and fracture location of various aluminium alloys have been studied.
The resulting zigzag hardness profile presented in Fig. 8 clearly shows that the hardness number is higher in the particle rich bands under all welding conditions, which is consistent with the hardening effects of secondary particles.

Brown-rot fungi have limited impact to lignin structure; however easily degrade polysaccharides; the wood becomes darker and cracks along and across the grain [1].
Coefficient of determination (r2) was 94.43, root mean square error of cross-validation (RMSECV) has value 3.48, residual prediction deviation = 4.24 (RPD) and rank (number of principal components used) was 6.
An important advantage of the FT-NIR spectroscopy is its simplicity of performing very high number of tests without needs of any destruction to the timber member.

The unique properties of these single grained superalloys is due to the ordered γ' phase that precipitates in the solid solution γ matrix.
That is the number of vacancies created by unit time dN/dt multiplied by the atomic volume Ω : . (3) Since all those vacancies must be removed a vacancy flow due to climb Φclimb is established through the raft surface S : . (4) The vacancies flux can be estimated by using the microstructural and mechanical data, after creep experiments at 1150°C.
We may show in a forthcoming paper [17] that the number of sinks, that is the density of a[010] dislocations in the ordered phase, is a more crucial point.

The maximum grain size was 0.4 mm.
A total number of 15 cores were drilled in horizontal direction parallel (“L”) and perpendicular (“H”) to the beam axis and in vertical direction (“V”), which is parallel to the casting direction.
The number of cracks was already larger at 50 kN with 1% fiber content compared to the beams with 2% of fibers.

Table 1 Tianshan Ordinary Portland Cement Index Loss on Ignition [%] MgO [%] SO3[%] Cl- [%] Specific Surface Area [m2/Kg] 2.52(≤5.0) 2.44(≤5.0) 2.46(≤3.5) 0.03(≤0.06) 413(≥300) Degree of Fineness [%] Standard Consistency water [%] Stability [mm] Setting Time [min] Compressive Strength [MPa] Flexural Strength (MPa) Initial Final 3d 28d 3d 28d 2.8 23.5 1.5 160 225 25.0 49.3 5.2 8.3 1.2 Coarse and Fine Aggregate The aggregates in this test are uniform solid, good grain shape, clean and meet regulatory requirements (shown in Table 2, Table 3).
Relative dynamic elastic modulus is a non-destructive testing indicators，It should be larger than 60%, as follows: (3) In the formula： P—Relative dynamic elastic modulus after n times of Freeze-thaw cycles (%); fn—Transverse fundamental frequency after n times of salt freeze cycles (Hz); f0—Transverse fundamental frequency before the test (Hz); N —the number of Freeze-thaw cycles. 3.3 Test Results Table 8 C40 Concrete Freeze-Thaw Test Data No.
Analyzed the average elastic modulus loss of C40 concrete under three different water-binder ratio, as follows Table 9: Table 9 The Orthogonal Test in the C40 of the Water Binder Ratio and Average Value of Relative Dynamic Elastic Modulus Water-binder Ratio Denudation Q [Kg/m2] Relative dynamic elastic modulus [%] Freeze-Thaw Cycles [times] Freeze-Thaw Cycles [times] 50 100 200 300 50 100 200 300 0.34 0.243 0.443 0.987 1.680 98.25 96.71 92.99 87.83 0.37 0.220 0.527 1.083 1.797 98.12 96.11 92.10 86.48 0.40 0.267 0.570 1.173 1.930 98.11 95.73 91.51 85.92 Fig. 4 Effect of water-binder ratio on the frost resistance of concrete The research indicates that: (1) With the decrease of water binder ratio, the deicer-frost resistance of concrete is increasing gradually, mainly for the number of frozen at different salt, concrete relative dynamic elastic modulus loss and erosion amount decreased; (2) When water binder ratio increased from 0.34 to 0.40, with the increasing times of freeze-thaw

Portland cement CEM I 52.5R, superplasticizer Glenium Sky 600 with a density of 1.06 g/cm3 in the amount of 4% of the cement weight, granite aggregate with an average density of 2.67 g/cm3 with 10-5, 5-2, 2-1, 1.2-0.5, 0.6-0.1 mm fractions and a fraction with a grain size of <0.1 mm (performing the function of a fine filler), and also mains water were used to make self-compacting concrete mixtures for the tests.
Because of the variation of the tested material it is recommended that a large number of measurements be performed so that the results can be statistically well interpreted [18].
Because of the large number of measurements, the results were statistically processed and presented as the expected value and the standard deviation.

For polycrystalline materials in the absence of any out-of-plane stress where the sample volume probed is large compared with the grain size the frequency shift, ∆ν, of the R2 line is given by: ∆ν = 2.54 (cm-1 GPa -1) σ (1.)
From this information and knowing the density of the pellet (82% of bulk alumina) and the cone angle (72°) of the illuminating laser light, it was possible to calculate the number of Cr ions contributing to the signal.
Discussion Piezospectroscopy has been used for a number of years as a means of measuring residual stress changes in the TGO during the ageing of TBC systems.