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Physical and chemical properties of Paste Filling Material Physical and chemical analysis of the Filling materials
Adopting the fly ash of minmetals power plant as filling material, the concentration of paste filling materials with same fluidity will be lower, also the intensity of paste filling body with the same amount of cementing material will be relatively lower.
All of this is beneficial to improving the performance of the filling materials, therefore, the fly ash of HanFeng power plant or MaTou power plant is the preferred option for filling material.
Conclusions Coal mining technology of paste filling seems new paste cementing materials as curing agent.
[4] S.Türkel:Journal of Hazardous Materials,2006, Vol. 1(2006),p. 261-266

However, the success of the simulation depends on the accurate identification of the constitutive parameters of materials, i.e., its calibration.
Thuillier, “Comparison of inverse identification strategies for constitutive mechanical models using full-field measurements,” International Journal of Mechanical Sciences, vol. 145, pp. 330-345, 2018
Thuillier, “Mechanical design of a heterogeneous test for material parameters identification,” International Journal of Material Forming, vol. 10, no. 3, pp. 353-367, 2017
Wu, “Knowledge-based modeling of material behavior with neural networks,” Journal of engineering mechanics, vol. 117, no. 1, pp. 132-153, 1991
Gahbiche, “Inverse identification using the bulge test and artificial neural networks," Journal of Materials processing technology, vol. 177, no. 1-3, pp. 307-310, 2006

They are the indispensable basic materials of the development of modern industry, national defense and science and technology, and they are also the important material basis for the development of new technology revolution on.
So, with the continuous development of China's coal industry and materials science, they have been widely used in the coal mine.
Journal of FRP/composite materials, 2000, (6), 39-40 [5] Xiantao Zeng.
Journal of FRP/composite materials, 2006, (1) : 42 ~ 44
Beijing Science Press. 2002.32-37.

These compositions called as cellulosic materials.
Materials and Methods A.
The cellulosic materials decomposed in different temperature.
Cellulosic materials occurs between 200oC to 400oC [14,15].
New Application of Kenaf (Hibiscus Cannabinus L.), Journal of Membrane Science, 315: 141-146. (2008) [4] Rasha M.

The original and immersed materials were cut into the smaller samples whose size were 4.5 mm×4.5 mm, as shown in Fig. 1 and Fig. 2.
Secondly, referring to morphology characteristics in previous SEM images and the equalized histograms, different materials and image background segmentation thresholds were gained.
Liu, Experimental research on waterproof performance damage of waterproof membrane under the mechanical circumstance in tunnel, Journal of Building Materials. 13 (2010) 487-491 [5] Q.X.
Yang, CT image artifacts and its solution, Journal of Mathematical Medicine. 22 (2009) 206-210 [7] Q.X.
Zheng, Experimental study of CT test on the failure of acrylate spray-applied waterproof layer in the groundwater environment, Science China·Technological Sciences. 53 (2010) 512-518

The copper matrix of both friction materials are continuous，which make the bond strength of the friction materials high.
Acknowledgements The work was financially supported by the National Natural Science Foundation of China (51001117).
Yin: Journal of Central South University (Science and Technology) Vol. 39 (2008), p. 517, in Chinese [3] Y.
Deng: Journal of Academy of Armored Force Engineering Vol. 23 (2009), p. 19, in Chinese [6] R.X.
Li: The Chinese Journal of Nonferrous Metals Vol. 18 (2008), p. 1453, in Chinese

The surveys found that the majority of mines adopt cement as cementitious materials, all backfilling materials or hierarchical backfilling materials as aggregate.
The content of MgO in new materials was large, so the early hydration degree of new materials was high [15].
[11] M.C.G.JUENGER, P.J.M.MONTEIRO, E.M.GARTNER: Journal of Materials Science Vol. 41 (2006), p. 7074
[14] Xiong Zhang, Hui Lu, Yongjuan Zhang, Ming Zhao: Architecture &Technology Journal of Xian University (Natural Science Edition) Vol. 3 (2011) p. 379, In Chinese
[18] Fusheng Tao, Lipeng Tao, Yanting Song: Journal of Building Materials Vol. 4 (2001) p.277, In Chinese.

Materials Science Forum, 1038 MSF (2021) 162-167
Archives of Materials Science and Engineering, 94 2 (2018) 49–54
Archives of Materials Science and Engineering, 95 1 (2019) 12–19
Ruban, Investigation of the properties of powder materials using computer modeling, Materials Science Forum, 1038 (2021) 33-39
Bezuhla, Improvement of fire resistance of polymeric materials at their filling with aluminosilicates, Materials Science Forum, 1006 (2020) 55-61

However, since the material performance requirements of hot-stamping dies have not been standardized, and special die materials have not been developed, the choice of materials is based on improving the safety coefficient, which leads to material waste and increased costs.
In this article, the performance requirements of hot-stamping dies are analyzed to obtain the main force indices and a material selection formula, providing a scientific basis for the selection of hot-stamping die materials.
Tekkaya．A review on hot stamping[J]．Journal of Materials Processing Technology, 2010, 210(15)：2103-2118
International Journal of Precision Engineering and Manufacturing. 2012, 13(7): 1101-1106
Mechanical engineering materials，2001，25(12)：36-40.

Schematic diagram of chip formation in EVAC of a brittle material The chip thickness of brittle materials is usually very small.
As a property of brittle materials, fracture toughness expresses the ability of a material to resist the growth of a pre-existing crack or flaw.
Lim: Materials and Manufacturing Processes, Vol. 18 (2003), p. 825-834
Symposium on Micro-NanoMechatronics and Human Science, (2004), p. 133-138
Yasuto: Transactions of the ASME: Journal of Manufacturing Science and Engineering, Vol. 127 (2005), p. 522-532