Search results

Numerical Simulation of Temperature Stress on Asphalt Pavement of Concrete Bridge Deck in Cold Region Hong WANG1, a, Shaopeng WU 2, b, Bo LI3, c, and Conghui LIU 4, d 1 Key Laboratory of Silicate Materials Science and Engineering (Wuhan University of Technology), Ministry of Education, Wuhan 430070, China 2 Key Laboratory of Silicate Materials Science and Engineering (Wuhan University of Technology), Ministry of Education, Wuhan 430070, China 3 Key Laboratory of Silicate Materials Science and Engineering (Wuhan University of Technology), Ministry of Education, Wuhan 430070, China 4 Key Laboratory of Silicate Materials Science and Engineering (Wuhan University of Technology), Ministry of Education, Wuhan 430070, China a wanghong@whut.edu.cn, bwusp@whut.edu.cn, clip@whut.edu.cn, dliuconghui666@126.com Keywords: asphalt pavement, concrete bridge, cold region, temperature stress Abstract: Flexible pavement plays an important role in the primary concrete
Table 1 Material parameters Thermal conductivity [W/(m•°C)] Specific heat[J/Kg•°C] Density[kg/m 3] Elastic modulus[MPa] Linear contraction factor(10 -5) Poisson's ratio AC 13 1.504 946 2100 1800 1.58 0.25 AC 16 1.826 1013 2100 1800 1.58 0.25 Concrete bridge deck 1.54 840 2500 30000 1.0 0.2 2.4 Boundary conditions 2.4.1 Thermal boundary condition Conjugating the first law of the thermodynamics, which states that thermal energy is conserved, and Fourier's law, that relates the heat flux with the thermal gradient, the problem of heat transfer by conduction within the pavement is solved.
Journal of Materials in Civil Engineering, Vol. 17(2005), p. 465-475
Balghunaim: Journal of Materials in Civil Engineering, Vol. 6(1994), p. 5282-5296
Chiasson, Ph.D., P.E., and Cenk Yavuzturk etc: Journal of Materials in Civil Engineering, Vol. 20(2008), p. 118-127

An unpublished Master Thesis, Department of Materials Science and Engineering, Worcester Polytechnic Institute
Journal of the Minerals, Metals and Materials Society, Vol. 57, pp. 46-51 [11] Tritt, Terry M (2004); Thermal Conductivity: Theory, Properties and Applications.
https://www.twi-global.com/technical-knowledge/faqs/x-ray-diffraction accessed 25th September, 2021 [18] JoVE Science Education Database (2021): Materials Engineering.
Journal of Materials Processing Tech. 294 (2021) 117146. https://doi.org/10.1016/j.jmatprotec.2021.117146 [30] Campbell, J. (2003); ‘Castings’, 2nd ed.
Journal of Materials Research 14(10):3901-3906.

As the wastes have plenty of calcium based materials, alkaline wastes could be used as new coal combustion sulfur capture sorbent so as to protect our environment [2-6].
Experiments Materials.
Acknowledgment This research was supported by National Natural Science Foundation of China (No. 59976019), Shandong Natural Science Foundation (No.Y2003F07 and No.Y2006F63) and Zibo Research Programme (No.20062502).
Wang, “Study on evaluation regularities and absorption characteristics of sulfur during coal combustion,” Journal of Coal Science&Engineering, vol.4, pp.80-86, January 1999
Chen, “Study on desulfuxization reaction characteristics of calcium based sorbents,” Journal of Combustion Science and Technology, vol. 4, pp. 367-373, August 1998.

Study on the Explosion Characteristic Parameters of Gasoline Vapor Inerted by CO2 Yang Du1,a, Jianjun Liang1,b, Shu Liu2,c, Xinsheng Jiang1,d, Haibing Qian1,e 1Department of Military Oil Supply, Logistical Engineering University, Chongqing, China 2School of Foreign Languages, Chongqing University of Arts and Sciences, Chongqing, China aduyang58@163.com, bcomet613@163.com, cliushu613@163.com, djxs_dy@163.com , eqhb309@163.com Keywords: gasoline vapor, explosion, Inerting, CO2 Abstract: This paper studied the characteristics parameters of gasoline vapor explosion through experiments in a φ0.48m * 28.69m long straight pipeline inerted by CO2.
Acknowledgments This work was supported by the National Natural Science Foundation of China (51276195), the Chongqing Key Laboratory of Fire and Explosion Safety (CSTC2010CA0005), and the Chongqing natural science fund (CSTC2011JJA00017).
References [1] Jianjun Liang, Xinsheng Jiang, Jianzhong Zhou. et al: Journal of Logistical Engineering University, Vol. 26(2010),p.33,(In Chinese) [2] Xinsheng Jiang, Yang Du, Jianjun Liang. et al: Journal of Northeastern University(Natural science), Vol.32(2011), p.19(In Chinese) [3] Jianjun Liang, Yang Du, Yihong Ou, et al: Advanced Materials Research, Vol. 724-725(2013), p.1192 [4].
Kosinski Pawel: Journal Of Hazardous Materials, Vol. 154(2008), p.981

Experimental analysis scheme[3] Escaping gas Waste sulfuric acid Washing liquid Washing slag Fig. 1 Abridged general view of scheme about analysis wasted sulfuric acid Materials and Methods[4,5,6,7,8] Materials.
Journal of polyvinyl chloride (PVC).11(2010)
China environmental science press, (2002)
Journal of chemical industry environmental protection. 3 (1999)
Journal of sulphuric acid industry. 5 (2008).

Neudeck, et al.: Materials Science Forum Vol. 389-393 (2002), p. 311 [5] P.
Neudeck, et al.: Materials Science Forum Vol. 433-436 (2002), p. 213 [6] P.
Neudeck: Journal of Crystal Growth Vol. 240 (2002), p. 22 [9] D.
Mazzola: Journal of Electronic Materials Vol. 30 (2001), p. 235 [12] B.
Sturm: Journal of Applied Physics Vol. 82 (1997), p. 4558 [16] Y.

,,respectively stand for the raw material conversion factor of producing ,,;stands for exact quantity of the raw materials supplied by company; ,,respectively stand for the cost of environmental pollution this company; It accordant with the production quantities, equipment technique and so on., stands for the permissible cost of pollution of company.
It’s a typical process of production planning according to the preceding analysis, the model is used to solve optimization problem of production planning.Constraint (2)-(4)indicate that the sum of the production number must be less than the demand.Constraint (5) means the supply of raw materials can not exceed a given amount that was a bottleneck in iron and steel production.Constraint (6) bmeans, actually, the minimum of the values should be given in the view of more accurate point.Constraint (7) shows that the production costs of environmental protection .
Basis dates of three kinds of products (Unit: 10,000 Yuan) Product Project Wire Plates sectional material  A1 A2 A3 B1 B2 C1 C2 C3 C4 C5 Materials and other costs 0.1 0.12 0.15 0.2 0.25 0.2 0.22 0.23 0.24 0.26 Average price ofproducts 0.25 0.27 0.30 0.40 0.45 0.41 0.42 0.43 0.46 0.51 Equipment and processing costs A 0.08 B 0.10 C 0.12 Environmental Cost 2000 1500 1300 Number of products (10,000 tons) 252.3 35.6 24.6 189 110 33.4 15.6 21.2 11.5 10.6 The company produces three specials of wire, two specials of sweet and five specials of profiles, and there are 3x2x5=30 specials of production plans or production units.
ACKNOWLEDGEMENT This research reported in the paper is supported by National Natural Science Foundation of China (50875190) and Key Laboratory of Metallurgical Equipment and Control of Ministry of Education in Wuhan University of Science and Technology (2009A08).
Tang, “A review of planning and scheduling systems and methods for integrated steel production t”, European Journal of Operational Research, Vol. 133, 2001, p. 1-20

The body materials is lightweight, high strength, residence seismic performance, the use of area is larger than other constructions, and it has a well architecture quality , most building materials is recyclable.Put light steel structure system widely used in residential buildings,has a high sense of environmental protection.
To play the advantages of light steel structure construction, in addition to use light steel components to complete the main structure of the residence, In the construction process, also need to use a variety of new wall materials, new windows, doors, and insulation materials.
The particularity light steel structure residence make it change move and demolition easily, in the residential life cycle ended, most of the building materials can be recycled.
As the building materials of the highest utilization of recyclable materials, the recycling rate of up to 100%. effectively avoiding a lot of construction waste.
Journal of Chongqing Jianzhu University, Vol. (3) 2007 ,P.87-89(In Chinese) [7] Yuheng Sun: Journal of Chongqing Jianzhu University, Vol. (3) 2007, P.106-108(In Chinese) [8] Xiuhua Bai: knowledge economy, Vol. (16)2010, P.115(In Chinese)

Abstract: The performance of the aluminum alloy makes it the most popular lightweight materials for the automobile manufacturers.
It is made by aluminium alloy 6016-T4, the material performance parameters are shown in Table 1.
Materials Science and Engineering : A, Vol.280: 37-49 [2] Barlat F, Berm J.C., 2003.
International Journal of Plasticity, Vol.19(9):1297-1339 [3] CHEN W, CHEN H-h, XIE J, LIU J-x, et al, 2008.
Journal of Hunan University ( Nature Science), Vol.30(5): 29-33

Materials Science and Engineering A.
Materials Science and Engineering A.
Materials Science and Engineering A.
Journal of Materials Processing Technology.
Materials Science and Engineering A.