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Site Monitoring on Temperature Field Distribution of Asphalt Pavement in Seasonal Frozen Soil Region MA Hong-yan1,a, FENG De-cheng1,b, JING Ru-xin1 1School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin,China amhyhit@163.com, bfdcgxy@vip.sina.com Key words:Asphalt Pavement, Temperature Field, In-Site Monitoring, Seasonally Frozen Soil Region ABSTRACT: As pavement bear the comprehensive effect of environment factors at the same time, its internal temperature field distribute complicatedly and difficult to be predicted.
Asphalt mixture with viscoelastic properties exhibits different mechanical properties and damage form on different environmental conditions.
Figure 3 2011.01.13~15 The relationship between each layer structural temperature and air temperature ① The period of temperature range of middle course and upper layer middle layer are consistent, which illustrated that air temperature is the major influencing factor of road surface temperature. ② The gradient distribution of each layer temperature was differs according to different seasons.
The PG grading is determined according to the extreme temperature of local climate, so the relationship between the extreme temperature of the climate and pavement affects directly on the rationality and economy of the material selection.
Conclusion ① The temperature gradient of each structure layer has seasonal different property.

a mail: shiyan0817@yahoo.com.cn; b mail: lijz@mail.crsri.cn; cmail: liudongmei926@sohu.com Keywords: Fractal Theory; Cement-based materials incorporated Phosphorus slag; Mercury Intrusion Porosimetry (MIP); Pore volume fractal dimension (D); Pore structure Abstract: Based on fractal theory and MIP data of cement stone incorporated phosphorus slag, pore volume fractal dimensions (D) were calculated, and the relationship between D and several factors were explored.
In recent years，with the developing of fracture mechanics and fractal theory, scholars have found that pore structure of some porous materials has obvious fractal characteristics, and D can be used to descript microporous structure and related properties such as physical and chemistry [1]～[3].
Used furnace phosphorus slag produced by Wengfu Linfei mill, chemical composition was shown in Table 2, Table 3 were data of physical and chemical properties.
Study on composition、structure and properties of cement and concrete with steel-making slag powder mineral additive[D], China Building Materials Research Institute,6:111(2003); [7] Yu Lehua,Ou Hui, Duan Qingpu.
Fractal nature of material microstructure and size effects on apparent mechanical properties[J], Mechanics of Materials,(18):89～101(1994).

The web height is the controlling factor in the optimization design .After determining other three parameters, the web height controls the maximum deflection.
Combining the advantage of good mechanical properties, easy and efficient construction, light weight, high durability to corrosion, we develop a kind of FRP sluice gate, and plan to apply it to certain engineering.
Consider the influence of single parameter on the maximum deflection and volume fraction function,then drew the influence curve,and in this way, primary factors will be found.
If the number of webs be increased, the maximum deflection value will be largely affected before the number reaching the cross point and the affection will be little after the number of webs exceeding the cross point both to the maximum deflection value and the volume fraction.
So web height controlling is a main factor in the process of FRP strobe optimizing.

Power requirements and pressure drop through the microfilters are important properties.
The opening factor is defined as.
The variation of K with opening factor and t/h will be shown in later work.
The non-dimensional pressure drop is affected by Re, opening factor and the ratio t/h, but is independent of Kn.
Chambers, Lattice Boltzmann computations of micro channel and micro orifice flows, in ASME 2008 International Mechanical Engineering Congress and Exposition 2008, pp. 907-919

Surface roughness of a final product is one of the major concerns in sheet metal forming processes because it can affect mechanical and physical properties of the product [5].
A three-factor full factorial design was employed in this study [9].
As being seen from Table 2, it can be concluded that depth increment (B), wall angle (C), and its interaction (BC) affect the surface roughness at the significant level of 0.05.
The most influential of the factors are determined.

School of Mechanical and Energy, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China 2.
With their high specific strength and stiffness, good damping properties, excellent machinability and castability, magnesium alloys have been widely used in automotive, communication, electronics and aerospace industries[1~2].
Discussion Stirring temperature is considered one of the most important factors for slurry making.
The insensitivity of the shape factor of primary particles to the stirring time prolongation can be due to different reasons.
Further stirring will only accelerates ripening and affects the primary particle size.

Several studies have been published which have investigated the factors that influence the hydrolysis of brushite cements both in vitro [5] and in vivo [6], including implant volume, liquid refreshment rate and media composition [5].
Here we report the influence of porosity on the mechanical and in vitro degradation properties of a brushite cement system.
Prior to mechanical testing, the beads were dissolved from the cement matrices by immersion in 10 mM trisodium citrate solution following which they were washed repeatedly in double distilled water.
A number of studies have been undertaken to elucidate the factors that can affect the hydrolysis reaction including, implant volume, media refreshment rate and media composition [8]. 3 CaHPO4.2H2O + 2 Ca 2+ � Ca5(PO4)3OH + 5H2O + 3 H + Equation 1 Some authors have attempted to prevent this reaction from occurring by the incorporation of salts capable of preventing hydroxyapatite formation including magnesium phosphates [5] and calcium pyrophosphate [5] into the cement.

When two or more planners work together through Internet, their plans can affect on another and conflicts may arise.
Officially, the term "agent" is used to denote a software based computer system that enjoys the following properties, namely autonomy, co-operability, reactivity, pro-activity and mobility[5, 6].
It prepares the work schedule of job-shop based on task planning, tasks on line, resource bidding and adjusts the schedule according to the variation of these factors ● Resource DB stores and manages manufacturing resource information in job-shop, such as resource capabilities, machine maintenance planning, manpower information.
In the process of bidding for resource, the main factors or conditions such as Machine-sharing constraint, Machine-usage constraint, Workstation constraint, which could cause resource conflicts, are taken into account.
Cai: China Mechanical Engineering, Vol.14 (2003) No.22, pp.1942.

Modeling and solving problems of heat transfer of cement clinker Yan Wen1,a, Na Li2,b and Bin Liu3,c 1College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, Hebei Province, China 2College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, Hebei Province, China 3College of Electrical Engineering, Yanshan University, Qinhuangdao, 066004, Hebei Province, China aemail: wywy0335@ysu.edu.cn, bemail: lina52641@126.com, cemail: liubin@ysu.edu.cn Keywords: cement clinker; seepage heat transfer; model solution Abstract.
Introduction Grate cooler is an important equipment of the cement firing system, its main task is to finish clinker’s transportation and cooling, and the cooling effect directly affect the quality of the cement clinker.
According to cement clinker having the porous media characteristics of packing particle, and considering the fluid properties and heat dispersion effect on heat transfer process, this project introduce porous media’s percolation heat transfer theory into researching of clinker’s heat transfer, and the control model of heat transfer process is built up.
Considering effect of the factors of the porous media’s convection, this project use continuity equation of percolation theory and heat transfer theory build up unit body’s mathematical model.
Considering the influence of temperature variation on gas, air density determined by the gas state equation: (3) In the upper formula, z is deviation factor; M is molecular weight of gas; R=8314 is gas universal constant.

As a result, the bridge plug can not be seated in place, which will affect the fracturing construction effect and reduce the single well productivity.
With the model, the relationship between load spectrum and casing and cement’s physical/mechanical parameters was discussed.
C[7], G.Landry[8], R.Blake[9] considering the integrity of the wellbore system, the influence relationship between shale gas well complex fracture crack propagation and the circumferential stress of wellbore was discussed, meanwhile, they thought reservoir rocks creep properties was the main reason caused casing failure.
To sum up, experts and scholars at home and abroad have studied the deformation characteristics of high steel casing with the non-uniform external extrusion load by the method of finite element method, and the influencing factors were also analyzed.
By combining the elastic mechanics theory with the complex variable function method, the high steel grade casing stress distribution influence factors were intensive studied, such as: lithologic inhomogeneous extrusion, the difference between reservoir rock stiffness and the cement stiffness, and ground stress inhomogeneity.