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Soundproofing of premises is one of the main factors determining the operational quality of housing and comfortable living.
Due to the developed porosity and relatively high content of interconnecting pores, cellular concrete has high acoustic properties: sound-absorbing and sound-insulating ability [4, 5, 6, 7, 8, 9].
The properties of such porous fillers when they are included in dry mixes provide a significant reduction in the thermal conductivity of the plaster layer, as well as its bulk density.
The quality of heat-insulating plaster mixtures depends not only on the granulometric composition of the aggregate / fillers, but also on the content of other additives, the presence of which significantly affects the final result.
Summary The advantages of acoustic materials based on the expansion of obsidian - a porous material, is in the unique combination of heat and sound insulating and structural properties, and they can be put in line with long-term building heat and sound insulating materials.

The laser nitrided surfaces are coated with TiN using the PVD facility to enhance the tribological properties.
INTRODUCTION Titanium nitrides provide the hard surfaces and improve the tribological properties of the surface.
They showed that temperature and the time is the main factors for the formation of the new phases during the nitriding process.
In addition, all the properties are assumed to be uniform and independent of the temperatures in the analysis.
Aleem, Laser gas assisted nitriding and tin coating of Ti-6Al-4V alloy: Experimental and numerical investigation of mechanical properties, Journal of Materials Processing Technology, Vol. 209(3) (2009) 1199-1208.

Introduction Injection molding is a complex process that depends on many factors, such as: the material of the casting and mold, the temperature of the melt being poured, the speed and pressure of pressing, the design of the Gating system, the lubricant used and the coatings.
The properties of lubricants are most dependent on their base, which can be used as petroleum products, organosilicon polymers, vegetable and animal fats, as well as various oils and their derivatives [4].
An equally important parameter that affects the thickness of the applied layer of lubricant is the way it is applied.
To meet these requirements, the coating must have a high level of residual compressive stresses, as well as increased adhesive properties and strength characteristics.
These factors will lead to a decrease in the magnitude and amplitude of vibrations of tensile stresses in the forming parts, both in the closed and open state of the mold, which will increase the period of operation of the mold before the formation of type I cracks.

Interface diffusion is strongly affected by ultrafine crystallinity and incorporated defects.
Introduction Fundamental knowledge of diffusion properties of ultrafine grained (UFG) materials prepared by severe plastic deformation (SPD) is one of the central issues in their potential technological applications [1].
Severe plastic deformation is known to affect the grain boundary (GB) diffusivity [2, 3, 4, 5].
The penetration profiles were determined by parallel mechanical sectioning by means of a precision grinding machine and weighing the sections using a microbalance.
Admittedly, triple junctions where the non-equilibrium GBs meet, may also exhibit enhanced diffusion properties.

The increased density of concrete with curing time can be attributed to several factors: 1-Formation of Hydration Products. 2- Reduced Porosity. 3- Strength Gain These results are in Table 2 and Fig. 4.
· It can produce ultra-high strength concrete with excellent mechanical properties using locally available materials to create an economically viable RPC.
Karabulut, “Mechanical properties of reactive powder concrete containing mineral admixtures under different curing regimes,” Constr.
Khalil, “Some properties of modified reactive powder concrete,” J.
Collepardi, “Mechanical properties of modified reactive powder concrete,” ACI Spec.

The reasons for its spread were very diverse, from social and historical factors, to economic and technical.
GFRP mechanical properties vary depending on the fiber volume, the resin type, the fiber orientation, quality control, manufacturing process, etc.
Mechanical properties of GFRP are also affected by the type of the applied load, duration, temperature and humidity.
In general, the main properties of GFRP bars are good resistance to electrochemical corrosion, high strength-to-weight ratios, outstanding durability, ease and speed of installation and the ability to tailor mechanical properties.
Structural and durability properties of hydraulic lime-pozzolan concretes.

So, we think that both the interfacial capacitance and epitaxial strain may be becoming the crucial factors for size effects in ultrathin ferroelectric capacitors.
In order to describe the size effect of the ferroelectric thin film, some physically based models [14,15] have been developed using first principles simulations or phenomenological approach by considering the above two crucial factors.
In the present study, we extended the Landau-Ginzburg-Devonshire thermodynamic theory by considering the mechanical film/substrate interaction and the film/electrode interface.
The physical properties are uniform within each layer.
It will affect all physical properties of a single-domain ferroelectric film.

Introduction The die temperature is one of the most crucial factors during the forging process [1].
Thus, it is necessary to introduce another way to study how the die temperature affects the microstructure evolution of specimens.
Tarterini: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, Vol.513-514 (2009), p. 176 [4] O.
Hama: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, Vol.516 (2009), p. 180 [5] C.
Shan: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, Vol.580 (2013), p. 294 [11] D.

The products manufactured by hot extrusion are much more superior in terms of defects observed on the inside of the hot finished pipe apart from material soundness, metallurgy and corrosion properties.
The disadvantages are: (a) Impurities and defects on the surface of the billet affect the surface of the extrusion.
Factors that Influence the Quality of a Hot Finished product.
In duplex stainless steels several factors like nitrogen content and solidification shrinkage influence the porosity level at the core.
Formation of gas blow holes in continuously-cast billets is a frequent phenomenon central porosity shown in below Figure 1a is an inner non-homogeneity of the continuous cast strand and can sometimes be accompanied by shrinkage, both caused by the same factors.

So far, There is a lack of more systematic research on factors affecting the rate of expansion of gypsum solidification.
The gypsum retarder of which the effect[2,3] , influencing factors[4,5]and retarding mechanism[6,7] had also been extensively studied.
Using the GB/T 17669.3-1999 standard of mechanical properties of gypsum plaster to test the flexural strength.
Acknowledgements This work was financially supported by the National Science and Technology Support Program（2011BAE14B05） References [1] DAIYANLIANG，ZHENGJIANHE，LISUQING，WANGHONGLIANG Study on performance parameters affecting expansion of plaster mold—Problem of gypsum expansion (一) National Building Technology Journal—《Ceramics》，2004，167（1）：22 [2] LEIMEN G.
Influence of inorganic retarder on building gypsum property [J].