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Tab. 1 Basic properties of coarse aggregate The Type of Coarse Aggregate Grain Diameter （mm） Apparent Density （kg/m3） Volume Density （kg/m3） Crush Index （%） Water Absorption （%） Nature 2.36-26.5 2767 1459 4.20 0.504 Recycled 2.36-31.5 2625 1313 16.02 3.160 Mix Proportions of Concrete.
Tab. 2 Mix Proportions of Concrete Specimen Number W/C Replacement of Recycled Coarse Aggregate（%） C （kg/m3） S （kg/m3） Coarse Aggregate W （kg/m3） Nature （kg/m3） Recycled（kg/m3） NC 0.47 0 457 658 1170 0 215 RC30 0.47 30 457 658 819 351 215 RC50 0.47 50 457 658 585 585 215 RC100 0.47 100 457 658 0 1170 215 Test Results and Analysis The test was divided into four experimental groups by recycled coarse aggregate of different rates and each group is six specimens.
The main reason why elastic modulus of RC decrease is due to a large number of mortar with a relatively low elastic modulus attached to recycled aggregate and large porosity of recycled aggregate will also reduce the elastic modulus of RC.

Using burnt clays in mortars may influence a number of their properties [1]; in particular it is monitored the increase in compressive and flexural strength values.
If it is assumed that the durability of these composites is connected with the number of microcracks affecting them, and their ability to resist the propagation of such cracks, it is possible to quantify this durability using different brittleness parameters.
Specimens and fracture tests Specimens were made of mixtures containing CL-90 white lime in the form of hydrated lime (Carmuse Czech Republic Inc., Mokrá), sand consisting of three fractions of sand: PG1 (0–0.5 mm), PG2 (0.125–2.5 mm) and PG3 (0.5–5.0 mm) in a ratio of 1:1:1, and Heluz brick powder (Heluz cihlářský průmysl v. o. s., Hevlín) or L05 metakaolin (ČLUZ, a. s., Nové Strašecí) with the grain size d50 = 5 µm.

The company of Kebelco and Guhe Electic [1~2]did a lot of research about the die material and speed of rotary die; Rotarescu[3] gived a method of theoritical process analysis, which covered the process-zone geometry, lubrication condition at the contact area between spinning ring and balls,number of balls and entering angle.Zhang analyed the folding defect caused by the gap between copper tubes and plug[4].Jiang analyed the forming mechanism by using thin-wall tublar parts[5~6].
Table 1 Tooth profile parameters for the inner-grooved plug Specification Addendum angle (°) Outer diameter （mm） Tooth height (mm) Groove number Addendum fillet （mm） φ9.52×0.27 30 10.62 0.165 70 0.05 The specification of inner-grooved copper tube analyed in this paper has the features of so many grooves and narrow cogging.The folding defect appeared frequently during forming process.
Discussions Inner groove forming The actual and simulation inner groove can be seen in Fig. 4a, 4b respectively.Form the Fig.4a it can be seen that grains of copper tube were extruded and elongated when balls spun close to the coggings of grooved plug.

Adding ultrasonic aid to hot-dip aluminizing can make the crystal grain of plating coat smaller and make the structure of plating coat evener and purer [5].
Acknowledgments The work described in this paper is supported by National Natural Science Foundation (Project number: 51005140), Natural Science Foundation of Shandong Province (Project number: ZR2010EQ037) and Young Teacher Development Support Fund of Shandong University of Technology.

The bulk density and grain size of the sintered sample was 6.08 g/cm3 and approximately 0.2 µm (Fig 1), respectively.
When the monoclinic fraction increased by aging test, the peak position at maximum of the 460 cm -1 band shifted towards higher wave numbers (Figure 2 (c)).
Fig.2 Typical Raman spectra of Zirconia: a)Tetragonal Zirconia, b)Transformed Zirconia (tetragonal + monoclinic) c) Schematic image of peak shift at 460cm -1 as a function of phase transformation a) b) Intensity (a.u.) 800 600 400 200 Wave number (cm-1) c) Fig 1.

Mengcheng County is one of the major grain producing area in Anhui Province, The main agricultural products of it are quality wheat, soybean, potato, and so on.
The national standard soil samples (GSS-1, GSS-2) were put in the soil sample analysis process for quality control, the number of repeat analysis of samples was 10% to 15%.
The increase of these heavy metals content, especially Pb, Hg, Ni, As, was widely considered to be caused by the increase in vehicle exhaust emissions, large-scale use of pesticides, garbage pollution to soil, sewage irrigation, applying a large number of superphosphate, mining activity ect[8,9], but this remained to be discussed further.

In a few places, the iron formation is in contact with the light color and medium grain gneissic basement.
Hornblende is medium-grained, subautomorphic to xenomorphic, and brownish in color.
Porphyroblastic feldspar is surrounded by biotite grains and very fine epidote grains showing porphyroblast rotation and rock shear due to dynamic metamorphism.
The magnetite grains are equidimensional (Fig. 41) and the fine to medium-grained pyrite is automorphic (Fig. 39).
They are more numerous in number and in geographic distribution than the Archean-age Algoma-type Bifs [28].

Diagram of experiment platform principle Experiments show that the following size mass balance model (PBM) is the most suitable as a ore mill for grinding model: Which is the mass fraction of the i grain size at time t; is breakage distribution function, on behalf of the ore properties. is rate for the i particle of ore crushing, on behalf of the grinding rate.
A small number of technologically advanced processing plants also carried out the study of optimal control of mineral processing.
The number of optimal control of experimental conditions in the actual industrial field, the high cost, difficult, long cycle, there is a risk of causing discontinued.

Recognizing this, a number of studies have been performed in this system.
Tronsdal et al. [5] studied diffusion by employing the micro-radiography technique and concluded that grain boundary diffusion is dominant below 900 ºC whereas volume diffusion dominates above 1000ºC.
The number of foils stacked for each element is decided from the knowledge of the interdiffusion zone developed in the bulk diffusion couples.

Microwave sintering has many advantages, such as rapid heating rate, lower sintering temperature, enhanced densification, smaller average grain size, short processing time, low power requirement and so on[15].
Theoretical calculation and discussion In the γ-LiAlO2:Fe3+ ceramic, the oxygen ions can form tetrahedrons with Fe3+ ions which substitute the Al3+ in tetrahedral centers, and the coordination number of oxygen is four.
Local structural parameters of γ-LiAlO2:Fe3+ (Ref. 19: ,,) Ligand numbers 1 2 3 4 Co-O bond lengths Table2.