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Fly ash (FA) and granular blast-furnace slag (GBFS) are usual mineral admixtures to conventional concrete, and their contents substituted for Portland cement definitely affect development rate of strength of concrete.
Introduction The strength is the most important property of concrete and influenced by many factors.
The strengths of hardened concrete were tested in compliance with “Standard for test method of mechanical properties on ordinary concrete”(GB/T 50081-2002).
References [1] Abolpour B, et al.: Statistical analysis of the effective factors on the 28 days compressive strength and setting time of the concrete, J Adv Res (2014), http://dx.doi.org/10.1016/j.jare.2014.03.005 [2] M.a.a.
[6] Shan HUANG: Research on Mechanical Properties and Early Prediction of Flay Ash Concrete, Wuhan University of Technology, 2008 (in Chinese).

Introduction Hemihydrate calcium sulfate whiskers is a promising reinforced material due to its high mechanical properties, but it has the characteristics of hydration too when it is in solution or at moist atmosphere.
Therefore, to investigate factors affecting the hydration of whisker is of primary importance for hemihydrate calcium sulfate whiskers' industrial preparation and application.

A particularly important effect on the spintronic objects and other nanoscale elements properties is exerted by the structure of layers, domains, regions, films arising during their manufacture.
Conclusion The proposed mathematical model makes it possible to assess the possibility of upgrading the nanofilms deposition surface, to study the influence of sample surface preparation various factors.
Reddy, Plasmonic and nonlinear optical absorption properties of Ag:ZrO2 nanocomposite thin films, Plasmonic. 9 (2014) 129-136
Tokura, Topological properties, and dynamics of magnetic skyrmions, Nature nanotechnology. 8 (2013) 899-911
Petukhov, Functional Semiconductor Nanostructures in Porous Anodic Alumina Matrices: Modeling, Synthesis, Properties, Apple Academic Press, Waretown, 2019

Based on the dynamic finite element method, Jihong Cui [26] revealed the main influence factors of blasting vibration of underground caverns by simulating the mechanical features of cavity around.
The research of the mechanical properties of anchored caverns under static load is more mature and widely used in engineering [30-31].
Foreign scholars carried on a series of research for dynamic properties of anchored structure.
The conclusion that closed blasting has a little influence on the mechanical properties of the grouting bolt has been drew by Gisle Stjernd [33] through pull-out test of anchor bolt under the explosion load.
In fact, the natural rock contains a large number of defects such as joints, fault age, crack, which lead to the deterioration of the mechanical properties of rock mass, thus disturbance effect of the explosion dynamic load for joint rock mass will be even more significant.

Moreover, its mechanical properties can be improved by heat treatment process.
Initial experiment Taguchi experiment Experiment affect Figure 1.
Designing Taguchi experiment [6] to indicate variable level suitable for machining AISI P20 mold steel material can be divided into 3 factors and 3 levels as shown in experiment plan in figure 1.
Comparison of workpiece surface and electrode a) Machining performance b) Affect of Performance Figure 7.
Performance and Affect from machining on mold steel AISI P20 Depth 50 mm.

Introduction Microstructural restoration processes of deformed materials, like recovery and recrystallization, have significant impact on the mechanical properties of the materials.
Therefore, these softening processes are of great scientific and technological interest in particular with regard to thermo-mechanical processing [1].
On the other hand, pre-aged deformed microstructure may affect the kinetics of the recrystallization, and consequently result in different behavior.
This affected the change in hardness in the 10-cycle ARB process (Fig. 1) [7].
- The microstructure and consequently the hardness of the specimens are controlled by various factors including recrystallization, grain growth and re-precipitation at around 300°C in a complicated manner

The toughness improvement was achieved without substantial impairment on thermomechanical properties.
This latter has strong influence on properties as impact, fatigue and damage tolerance among others [3].
The critical stress-intensity factor, KIC, was determined.
Results and Discussion Thermomechanical properties.
Sangermano, Comparative curing kinetics and thermal–mechanical properties of DGEBA thermosets cured with a hyperbranched poly(ethyleneimine) and an aliphatic triamine, Thermoch.

Parts of the material physical properties of Si3N4 ceramics [9] are shown in Table 1.
Chinese Journal of Mechanical Engineering, 2000, 36(11): 75-79
Chinese Journal of Mechanical Engineering, 2002, 38(6): 61-66
Chinese Journal of Mechanical Engineering, 2008, 44(8): 132-136
Chinese Press of Mechanical Industry, 2008, 1: 22-24

Normal stress and shearing stress were the factors which affected the coating shedding in the tensile process.
Material properties were shown in Table 1.
Coating Substrate 10 mm 1 mm 10 mm 10 mm Symmetry constraint 0 displacement constraint 51 MPa Fig.1 Tensile sample Fig.2 Finite element model Table.1 Finite-element analysis setup of material properties Property Elastic ratio E/ GPa Poisson ratio v FeAlCrBSiNb 215 0.25 45 210 0.269 According to the sample, the finite element model was established.
It assumed that the thickness of coating was uniform and the material properties were isotropic.
Consequently, applied load that cracks extending needed would directly affect the load value that coating completely peeling off needed.

The layout and weight of the drill string and its individual sections significantly affect the technical and economic indicators, which imposes certain restrictions on the choice of drill pipe materials and safety factor.
Aluminum alloys have valuable physical and mechanical properties, which distinguishes them from steels, the traditional material for the manufacture of drill pipes.
Aluminum alloys are characterized by stability of mechanical properties at low temperatures, high processability in the process of processing by pressure and cutting.
Ttribotechnical properties of composite material “aluminum–carbon nanofibers” under friction on steels 12KH1 and SHKH15.
Antiwear properties of composite greases “LITOL-24–magnesium hydrosilicate particles”.