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Improvement concrete with different types of fiber, instead of reinforcement steel has a number of advantages observed by many researchers [4–8].
This is consistent with a number of studies [12–14] This decrease in compressive strength may be due to the low adhesive of PET fibers, and also the ductility of the PET fibers that may affect the compressive strength of such concrete [24]., The compressive decreased by about 6.23% with the addition of 1.0 % of PET fibers compared with the reference mix.
The effect of particulate reinforcement on strength and deformation characteristics of fine-grained concrete.
Fiber fine-grained concretes with polyfunctional modifying additive.

The microstructure of the unwelded plates showed equiaxed grains with grain sizes ranging from 30 to 90 µm.
The specimen investigated in the present work carried the identification number 3-1A.
Data analysis Each diffraction image recorded for a specific x/z-position contained a number of diffraction spots from Austenite {111} to {222} planes.

As shown in Figure 3 (a), the grains of the raw materials are unevenly distributed, and the micro structure is continuous.
The results show that horizontal wedge rolling can significantly improve the grains, but the risk of central Damage should be considered.
Figure 6 (C) shows that macro -Damage has obvious cross -shaped characteristics, and there are a large number of shear cracks in the field of pore aggregates.
With the growth and convergence of micropores, such as enlarged images, a large number of crack distribution at the tip of the tip is damaged, which further illustrates the cracking of the metal matrix before the microphone gathering.

The influence of seed layers numbers toward the growth of ZnO nanostructures have been investigated in detail.
The low transmittance might resulted from two possible ways (i) possible light scattering on roughnes surface morphology and high grain boundary that the thin films have, due to less uniform dispersion of needle-like ZnO nanostructures on the glass substrate which form large agglomerated nanostructures; (ii) the reduction in transmittance might be due to the imperfect alignment of the needle-like ZnO array, which caused random scattering of the incident light between the voids, the inclined and the vertically aligned of needle-like ZnO nanostructures [13, 14].
The high transmittance in visible could be achieved if the thin films have smoother surface morphology, less grain boundaries and good homogeneity [13, 15].
High ratio of IUV/IVIS in the prepared thin films contributes to the highest stoichiometric which has the most improved optical properties compared with other samples due to low number of oxygen defects [19].

From the above, we can explain the reasons and conclusions as follows: (1) Heilongjiang Province is a major agricultural province and the major grain producing areas of the country, over the years, its self-sufficient agriculture is dominated; Agricultural production is the key to restricting economic development in Heilongjiang.
Therefore, while ensure the highway industry play a catalytic role of industry, Heilongjiang should vigorously into new industries to activate of existing technological resources, promote and applicant high-tech and practical techniques to speed up the formation of a number of proprietary high-tech industries, promote the rapid economic development board to a new level
First, in order to promote agro-industrial farming and aquaculture development, we can establish and improve the agricultural information network service system and develop modern efficient agriculture to accelerate high-quality grain production bases, so that it can growth to be an important new industries.
The main direction of the leading industries should be placed on the fine chemicals, building a number of new projects that are large-scale investment, high technology, good economic returns

In addition, the size of these particles was too large and the number of particles was too few to influence the recrystallization behavior of IF steel [4,5].
When the annealing temperature is 700°C, most of TiC particles form in chains as though they are located along grain boundaries as shown in Fig. 3(a).
When the annealing temperature rises, the observation shows a decrease in the number and an increase in the size of the TiC particles, which indicate a coarsening of these precipitates.
The size distribution of the TiC particles varies with different annealing treatments and strongly influences the growth of the beneficial {111} oriented grains and finally affects the average r value [7].

Preferential adsorption at intergranular crack tips or preferential nanovoid formation along grain boundaries – depending on grain-boundary microstructure, misorientation, and metalloid segregation – could explain why intergranular crack paths are sometimes preferred over transgranular paths.
Figure 5: (a) da/dN versus rise-time plots for a positive sawtooth waveform for seven DK values, with da/dN values for each DK numbered/lettered for two rise times, and (b) construction of da/dN versus DK plot based on the rise-time data, showing the shape observed experimentally for cathodically protected steel, including the ‘plateau’ da/dN at intermediate DK [12].
(The plots are based on experimental data, which are similar for a number of steels with strengths in the range of 350–900 MPa [1,12,13].)

The substrate on which the metal powder was placed was carbon steel (AISI 1049), and its surface was sandblasted by WA abrasive grains with an average grain diameter of 300 μm to improve the wettability of the melted powder.
The number of pores was increased with the decrease of volume specific energy density.
(1) The number of pores was influenced by the volume specific energy density.

For a transformation of a bcc structure (α') with coordination number 8 to a fcc structure (austenite), which is more dense with coordination number 12, a isotropic contraction is expected.
Fig. 4b, shows the same alloy after reheating to 800°C and cooling down to room temperature where the � phase is light grey and the possible oxidation product, which is situated at the grain boundaries, is dark grey.
Nevertheless, making the correlation between the strained microstructure (Fig. 4a) and the one after reheating (Fig. 4b) allows linking the nucleation places of the dark phase to the �-� high angle grain boundaries, twin boundaries or former �-� phase boundaries.

In addition to the low volume fraction of CFe3, its orthorhombic structure spreads the scattering intensity into a large number of Bragg reflections.
The pearlitic microstructure is so fine (see Fig. 1c), that despite the small gauge volumes employed the number of diffracting grains is large enough to give adequate grain statistics.