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They are characterized by a tight construction of the matrix-aggregate contact zone and the regular shape of grains of artificial aggregates.
In the framework of the research program, two concrete mixtures marked with numbers C-1 and C-2 were made (Table 1).

The Fourier transform infrared (FTIR) spectra of pure and doped polymer films were recorded using NICOLET Model 5700 spectrophotometer in the wave number range 400-4000cm-1 with a resolution of 4cm-1 using KBr pelleting method.
Here Fig.4 (a), shows a clear tetragonal shaped nanostructure with a grain size of. ~ 200nm.

In the initial state this type of catalyst looks like extruded articles from alumina, with a diameter of 1.2 - 1.6 mm, about 5 mm long, with pour grains density of 0.62-0.66 g/cm3, and a specific surface of 200-250 sq.m/g.
The number of the remained carbonaceous deposits, % on the surfaces of the catalyst when annealing in the environment enriched with oxygen Annealing time, [h] Annealing temperature [°С] 500 550 600 650 700 750 1 32.6 13.4 14.2 4.6 0.5 0 2 17.3 14.1 2.8 0.4 0 The process of annealing was carried out at variation of temperature from 500 to 750 °C, isothermal holding was 1 and 2 hours, oxygen was supplied from a cylinder at the rate of 2 l/min.

In order to minimize the negative effects of defects, a significant number of methods was proposed, the basis of which was the use of various functional additives that ensured the decrease in shrinkage deformations of concrete both during its production and during operation [1–12].
Cherkashin, Fine-grained concrete with various types of fibers, Magazine of Civil Engineering 97(5) (2020) 9702

The morphology was observed with a large number of pores.
Since Li7La3Ce2O12 was prepared by using planetary ball-mill method, the sample became porous and smaller grain size was obtained [12].

In recent years, with the deepening of the exploration in this area, a large number of new data and material can be obtained.
Accordingly, the red mudstones in Dongying Depression can be divided into three types: The first type is red or purplish red, and massive structure without obvious bedding; the grains are relatively even without bedding and no gravels can be found.

Sample number Laser Power [kW] Speed of the Al wire feed [mm/min] Intensity of the compressed-air flow [litre/min] Clad thickness [mm] 1 2,5 830 - 1,28 2 2 830 - 0,96 3 1 830 - 0,74 4 1 830 10 0,77 5 1 830 20 0,84 6 1 830 30 1,03 Table 1.
The SEM image of the 5th sample shows that the dark grey, small nearly spherical grains contain oxygen and aluminium, so with a great chance alumina.

(8) where is the Avogadro number, is the density, is the average sound velocity, andare transverse and longitudinal elastic wave velocity, respectively [28].
In earlier years, the effective modulus of polycrystalline materials is approximated by taking into account uniform strain [30] or uniform stress [31] exerted on grains, which are put forward by Voigt [30] and Reuss [31], respectively.

The factor regulating to physical and mechanical properties are crystalline phases, crystallisation degree and fine grained size [6].
Sintering process increased the number of crystalline phases present in the sintered glass ceramic bodies.

The abrasive water jet cutting process is influenced by many parameters such as water pressure, abrasive (mass) flow rate, abrasive grain size, stand-off distance, jet traversing speed, nozzle diameter, etc.
Obviously, granite cutting by abrasive water jet is a complicated process influenced by a large number of factors, of which the jet diameter and traversing speed are among those most influential controllable parameters.