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Asphalt is a kind of thermoplastic, viscoelastic materials.
Recent years, polymer/layered silicate nano-composite materials cause widespread attention of researchers.
Acknowledgement The authors acknowledge the financially support provided by the National Natural Science Foundation of China (51002118) and the 13115 Major Science and Technology Special Projects of Shaanxi (2008ZDKG-39).
Li, Evaluation of asphalt aging properties, Journal of Traffic and Transportation Engineering. 1 (2005) 1-5
Gao, Aging kinetics of roads asphalt, Journal of East China University of Science And Technology. 24 (1998) 399-404

Experimental Table 1 Ultimate and proximate analysis of sample (w/%) Sample Ultimate analysis (ad) Proximate analysis (ad) C H N S O M A V FC Flame coal 73.53 5.35 1.08 0.81 8.82 6.03 4.37 33.30 56.30 algae 37.21 6.20 2.78 1.42 47.62 8.11 11.63 68.49 11.77 Materials.
The two kinds of materials have different chemical properties.
CS2 extraction and FTIR & GC/MS analysis of a Chinese brown coal, Mining Science and technology. 2010, 20(4), 562-565 [2] J.M.
Upgrading of coal-tar pitch in supercritical water, Journal of fuel chemistry and technology, 2008,36(1):1-5
Reduction of carbon dioxide emission by microalgae, Journal of WuHan university of science and technology,2009,32(4):436-439

The experimental materials and methods 1.1 The physical property of materials (1) The waste-rock and tailing come from a certain iron mine, the bulk density of waste-rock is 2.899 t·m-3, the bulk density of tailing is 2.641 t·m-3
This work was financially supported by National Natural Science Foundation of China (51164016) and the key science and technology projects of Gansu Province (1203GKDC003).
Construction and Building Materials, 23(5):2087-2092. (2009) [3].
Construction and Building Materials, 23(7):2593-2598.( 2009) [4].
Study on the Material Performance of Coarse Aggregate Cemented Backfill, Journal of Kunming University of Science and Technology (Science and Technology), 34(6):73-76

Yuan[5] has experimented grooving and cutting technology of Kevlar fiber reinforced polymer matrix composites materials.
laser cutting The basic principle of laser cutting was that the high power density of focused laser beam shot materials specified position, materials were cut due to melting and gasification through temperature grew sharply cut[7].
Beijing: science press,1997.
Journal of Materials Processing Technology,2009: 6168–6173 [4] X.J.
Study on the Application Technology of Polymers and Composite Materials: [D].

Materials Acetonitrile and ethyl acetate were HPLC grade and purchased from J.T.Baker (USA).
Acknowledgment This work was financially supported by the Special Fund for Quality-Science Research project "doubles strike" key geographical indication protection technology on the origin of Chinese medicinal materials inspection appraisal method（2012104019-4） References [1] Chen Yunyun, Ding Yi, Wang Wei,et,al.
Tsinghua science and technology Vol.12(2007),P389-393 [2] Tan Ninghua, Zhao Shouxun, Chen Changxiang, Zhou Jim.Chemical constituents from tubers of Pseudotellaria heterophylla.Acta Botanica Yunnanica, Vol.13 (1991),P440-431
Research status and trends of pseudOstellariae radix, Chinese Journal of New DrugS Vol.21(2012)，P757-760 [4] Chun-Zhao Liu,Hua-Ying Zhou,Qiong Yan. “.Fingerprint analysis of Dioscorea nipponica by high-performance liquid chromatography with evaporative light scattering detection”, Analytica Chimica Acta, Vol. 58(2007),P61-66
“Fingerprint analysis of fruiting bodies of cultured Cordyceps militaris by high-performance liquid chromatography photodiode array detection”, Journal of Pharmaceutical and Biomedical Analysis, Vol. 44(2007), P818-822.

Orthogonal cutting experiments The material used in this study is a forging bar of Fe-36Ni invar alloy and the chemical composition is listed in Table 1.
The material were then annealed at 1000°C for 2.5h within hydrogen and nitrogen, and the hardness after heat treatment is 140HBS.
Acknowledgement This work is supported by China National Science Foundation (No.51075298) and Tianjin University & Education Foundation ( KYQD10002).
ASME, Journal of Applied Mechanics Vol. 31(1964), p.189 [2] J.
International Journal of Mechanical Sciences Vol. 39(1997), p.1273 [4] J.

Based on fractal geometry and micro contact size distribution function, a fractal model of contact stiffness of joint interfaces was proposed in reference [6]: (1) (2) The dimensionless normal contact stiffness of joint interfaces can be as: (3) in which ,is the nominal contact area, ,is the real contact area, is the dimensionless contact area, ,is the dimensionless critical contact area, is the equivalent elastic modulus of the two materials of the two surfaces
when and (14) when (15) , in which and ,is the Poisson’s ratio of the softer material.
Acknowledgment The research was supported by the National Science Foundation under Grant No.50775153 and Shanxi Scholarship Council of China under Grant No.2011-076.
Journal of Tribology, Transactions of ASME(2010), 132：011401-1－011401-7
[8] Wang S, Komvopoulos K．Journal of Tribology, Transcations of ASME(1994),116(4)：812～823

However, this method requires increased energy and material costs associated with the use of high temperatures and special equipment in its implementation.
Liu, Facile synthesis of ammonium aluminum carbonate hydroxide multilayered nanofiber by using solid state reaction, Advaced materials research. 415-417 (2012) 580-584
Russian journal of applied chemistry. 84 №1 (2011) 9-16 (in Russian)
Colloid journal, 76 №3 (2014) 356-362
Yakovleva Issledovanie harakteristik poristosti ob'emno-poristyh nanokatalizatorov na osnove oksida alyuminiya i intermetallidov sistemy nikel'-alyuminij [Investigation of porosity characteristics of bulk-porous nanocatalysts based on aluminum oxide and intermetallides of the nickel-aluminum system], Inorganic materials: applied research. 73 №1 (2013) 95-101 (in Russian).

The quartz sand dressing plant in the Jiaogan work area of Inner Mongolia have applied H2SO4 as modifier, fatty amine and petroleum sulfonate as collecting agent in the reverse flotation of removing the impurities such as potassium feldspar, generating the final products with SiO2 grade of 97.83% which can be used as raw materials for the production of float glass and high-quality steel cast sand.
After wet screening, material with particle size from 0.147mm to 0.044mm was selected to acid leaching.
Adsorption mechanism of mixed cationic/anionic collectors in feldspar-quartz flotation system [J], Journal of Colloid and Interface Science 2007, (3):195-204
Flotation of Silica Sand with Sulfuric Acid in Jiaogan[J], Journal of China Glass,1990,(3):16
Silica Minerals Flotation Principle[M], Beijing:Science Press, 2001

Diffusivity in Cement-Silica Fume Based Materials: Experimental and Computer Modeling Results on Mortars Z.
The safety of this storage mode depends on the knowledge of the effective diffusion coefficients of such materials.
For materials with SF addition, The ITZ is non-existent or negligible [13, 14].
Dridi, Analysis of effective diffusivity of cement based materials by multi-scale modelling, Journal of Materials and Structures 46:313-326 (2013) [12] D.P.
Bentz, Influence of silica fume on diffusivity in cement-based materials: II.