Search results

Effects of coal mining subsidence on the changes of soil nutrient in Shenfu-Dongsheng coal field Tingting YANG 1, a, Yong GAO 1,b , Guozheng YAO 3,c and Peng LI2,d 1College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot, China,010019 2Grassland Research Institute of Chinese Academy Agricultural Sciences, Hohhot, China,010010 3School of Soil and Water Conservation, Beijing Forestry University, Beijing, China, 100083 aytt198@126.com, bgaoyong315@yahoo.com.cn, cyaoguozheng@126.com, dlipengcaas@126.com Keywords: coal mining subsidence, soil nutrient content, Shenfu-Dongsheng coal field Abstract.
By field investigation, the soil in this area is divided into two types ：one is Brown soil developed from loess parent material , and the other is Aeolian Soils formed on eolian sand parent material.
Journal of Inner Mongolia agricultural university (natural science edition) .Vol. 6 (2007) , p. 105-110
Coal science and technology.
Journal of soil and water conservation.

High-Strength Porous Ceramics Produced by Recycling Glass Fibers in Waste GFRP Hiroyuki Kinoshita1, a, Koichi Kaizu2, b, Hiromori Miyagi1, c Hitoo Tokunaga3, d and Kiyohiko Ikeda1, e 1 University of Miyazaki, Gakuen-Kibanadai-Nishi, Miyazaki City, 889-2192, Japan a t0d165u@cc.miyazaki-u.ac.jp Keywords: Ceramics, Composite Material, GFRP, Clay, Recycling, Bending strength Abstract In this study, as the effective recycling technique for the waste GFRP, the process for the producing the porous glass fiber reinforced ceramics by firing the mixture of the clay and the crushed waste GFRP was proposed.
Specimens Raw materials for specimens Fig.1 shows the clay produced in Miyazaki Prefecture in Japan and POM plastics (Polyacetal pellets, Trade name: DURACON made in Japan) with glass fibers of 40% used as the raw materials for specimens.
NAGAOKA: Value-Added Recycling of Disposal Plastics, Journal of the JSTP, Vol.49, No.566 (2008), pp.175-179
[4] The Clay Science Society of Japan, Clay Handbook, (1966), pp.701-737, Gihodo Shuppan Co.

Bhanu and Sankara Rao: Materials Characteriation, Vol. 59 (2008) No.59, p. 508
Agostinho: British Corrosion Journal, Vol. 34 (1999) No.1, p. 67
Cai: Rare Metal Materials and Engineering, Vol. 39 (2010) No.9, p. 1571 (In Chinese)
Lupinc: Materials Science and Engineering, Vol. 462 (2007), p. 436
Zhang: High Temperature Deformation and Fracture of Materials (Science Press, Beijing 2007) (In Chinese)

Introduction In recent years, with the development of nanotechnology and tribology on a micro level, a very vast prospect of nano materials has already been shown in tribology.
Nano-Cu powder has not only effects of nano materials but also advantages of metallic copper.
Zhang: Rare Metal Materials and Engineering Vol. 39(2010), p. 1711 [5] H.L.
Xin: Journal of Anhui Vocational Technical College Vol. 5(2006), p.11 [8] X.J.
Ding, et al: Journal of Tianjin Institute of Technology Vol. 17(2001), p.19

Friction Coefficient Model The friction factor between rollers and rolled pieces has mainly relevance to the rolling speed, roll surface state and roll material[4], it can be expressed as:
Acknowledgement This research was financially supported by National Natural Science Foundation of China (51074051).
[2] C.T.d.A.Pires, H.C.Ferreira, R.M.Sales, Journal of Materials Processing Technology. 209 (2009) 3592-3596
[4] J.S.Wang, Z.Y.Jiang, A.K.Tieu, X.H.Liu, G.D.Wang, Journal of Materials Processing Technology. 162-163 (2005) 585-590
[5] F.S.Du, G.G.Wang, X.L.Zang, X.T.Li, Journal of Iron and Steel Research (International). 17 (2010) 19-23

Effect of Admixtures on the Performance of Recycled Fine Aggregate Cement Mortar Fuxing Wang , Guozhong Li a*, Juan Chen Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China amse_ligz@ujn.edu.cn, *correspondence author Key words: recycled mortar; admixtures; mechanical property; micro-morphology Abstract: The effect of admixtures on the mechanical properties of recycled fine aggregate cement mortar was studied.
References [1] Liao chunlin:Journal of foreign building materials science and technology,4,28,(2007),p.67-69
[2] Xu yidong:Journal of building materials,4,7 (2004), p.447
[3] Yu lehua:Journal of East China Jiaotong University,4(1999), p.14-15.

Introduction The precast concrete shear wall system is becoming a new research hot point in China for low, medium and highrise residential construction due to its economical advantages and environmental benefits with the safety and efficiency of the production process, the high quality of materials and workmanship, and the environmental friendly way of building.
Acknowledgements This work was financially supported by the Natural Science Foundation of China (No.51278312).
Journal of Building Structures.
China Civil Engineering Journal.
Journal of Earthquake and Engineering vibration.

The coating materials mainly are metals like Ni, Cu or other high temperature resistant materials like Al2O3, SiC and so on[9,10].
Materials and Methods The experimental matrix of the research is Al-5Mg alloy.
Then the morphology of the composite materials prepared by the above method was analyzed.
Daoud, Microstructure and tensile properties of 2014 Al alloy reinforced with continuous carbon fibers manufactured by gas pressure infiltration, Materials Science and Engineering A. 391 (2005) 114-119
Pramod, Zulfiqar Khan, Tribological characteristics of innovative Al6061–carbon fiber rod metal matrix composites, Materials and Design. 50 (2013) 597-605

Damage Evolution Equation of AZ31B Magnesium Alloy during Superplastic Deformation Meijuan SONG 1,a , Lingyun WANG 2,b , Raochuan LIU 1,c , Zhixiang WANG 3 1 College of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing, 400050, China 2 College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China 3 Chongqing Jiao Tong University, 400043, China a meijuan_song@126.com, b linyunwang@yahoo.com, c larryemailbox@126.com.
For some materials with good ductility, damage is usually accompanied by the nucleation and expansion of micro-cavities.
The internal cavity density of material can better reflect the damage in superplastic deformation, meanwhile, the cavity damage of materials at elevated temperature can be preserved to room temperature with proper method.
The cavity volume fraction vf is measured as damage variable in superplastic materials.
Materials Science and Technology, 1997, A234-236: 343-346 [8] Wu shidun.

For CFRD, the interconnect materials are used in the expansion joints and peripheral joints.
Tab. 1 Parameters of static model Tab. 2 Parameters of dynamic model Materials ρ (g/cm3) φ0 (○) Δφ (○) K n Rf Kb m Materials C nd Rockfill 2.15 52 8.5 1100 0.35 0.82 600 -0.1 Rockfill 2339 0.5 Tab.3 Residual deformation parameters of rockfill materials Materials c1 c2 c3 c4 c 5 Rockfill 0.0064 0.75 0.0 0.175 1.33 Seismic Wave Input.
Fig.3 Dynamic shear modulus vs shear Fig.4 Damping ratio vs shear strain of strain of filling materials filling materials (a) Along the river (b)Vertical (c)Dam axis Fig.5 Time history of seismic input Analysis of Face Slab Stress and Deformation The deflection and the axial stress of face slab are shown in Figure 6 and Figure 7 respectively in full storage and after earthquake.
Guo: Journal of IWHR, Vol. 5(2007) No.3, p.233-240.
Zou, et al: Journal of Hydraulic Engineering, (2001) No.8, p.20-25.