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Therefore, in order to strengthen the emission reduction of each province and make construction industry develop with a low carbon emission way to promote the economic growth rationally, this essay offers following proposals: (1)Adjust the structure of building materials; close down outdated production facilities Adjusting the structure of building materials is an important way to build an efficient and economized society.
Construction industry should not only guarantee the reasonable growth of economic aggregate, but also optimize the industrial structure and product structure by reducing the usage of building materials with high carbon emission.
Building materials and field operation with less this kind of raw materials should be developed and utilized.
Acknowledgements This work was financially supported by Xi'an Urban and Rural Construction Committee, the 2013 construction science and technology projects: The study on energy efficiency and energy savings of construction in Xi'an(sjw201311).
Journal of Transport Policy，2005(12) [6] Yifen Lu.

This finding is logical to an effect of nozzle rotation that a more amount of coating materials passing through the nozzle will increase DFT.
Transaction on Automation Science and Engineering.
Journal of Thermal Spray Technology.
Prombanpong: Material Consumption and Dry Film Thickness in Spray Coating Process.
Materials and Design.

Introduction Ceramic materials have been widely used as functional materials as well as structural materials in many industrial fields because of their excellent thermal, chemical and wear resistant behaviors.
But the brittle nature of ceramics makes the machining process very difficult compared to the same process with ductile materials.
Abrasive machining is the primary method of the present ceramic materials machining technology, which now can approximately be classified into the loose abrasive machining and the fixed abrasive machining.
Acknowledgment This project is supported by National Science Foundation of China (Granted number 50535040).
References [1] J.L.Yuan, Z.W.Wang,D.Q.Yu: Chinese Journal of Mechanical Engineering.

PCB is difficult-to-cut laminate composite which consists of dielectric layer (resin / glass fiber cloth) and high purity metal conductor (copper foil), and it is heterogeneous anisotropic material with different cutting mechanism from metallic material and other composite material.
The structure of PCB material, copper clad laminates, is showed in Fig. 2.
The fact is due to the increasing material removal rate.
The center material of the hole is cut by the chisel edge which has big negative rake angle.
Journal of Materials Processing Technology, 2001, 118(1-3): 436-441 [6] Hidehito Watanabe, Hideo Tsuzaka, Masami Masuda, Microdrilling for printed circuit boards (PCBs) - Influence of radial run-out of microdrills on hole quality.

While during the thermal expansion, the high temperature materials adjacent to the fusion zone will produce uneven compressive plastic deformation with the restriction of the surrounding other materials, but as it cooled, the material with plastic changes can not contract freely due to restricted by the surrounding other materials, which result in material uneven heat-expansion and cold-contraction and produce the thermal stress.
This kind of tensile and compressive stresses on both sides of the weld will cause material wave-like deformation, which not only affect the beautiful appearance of the structure, but also can reduce the bearing capacity of thin-walled structures.
The residual tensile stress is σrc=0.1σy, the residual compressive stress is σrt=0.8σy, σy is the material yield strength[8].
Acknowledgments The authors wish to acknowledge the support provided by National Natural Science Foundation of China (51175146) and the Fundamental Research Funds for the Central Universities (2012B14014).
Journal of Constructional Steel Research, Vol.19, No.4 (1991),p321-329 [5] Chen Dong.

Microstructural Evolution of Fe-based Metallic Glass/2024-Al Powder during High Energy Ball Milling Process Ruixiao Zheng1,a, Yitan Zhang1,b , Sujing Ge2,c , Han Yang1,d , Chaoli Ma1,e 1Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science and Engineering, Beihang University, Xueyuan Road No.37, Haidian District, Beijing 100191, China 2Hebei Lizhong Nonferrous Metals Group Co.
Al based materials prepared by powder metallurgy (PM) process offer a number of interesting opportunities for high strength applications.
The authors would also like to thank Hebei Sitong New Metal Material Co., Ltd (STNM) for providing experimental facilities to carry out this work.
Lavernia, Processing of nanocrystalline al-based materials by mechanical attrition in liquid nitrogen, Proceedings of the TMS Fall Meeting, 2000. pp.167
Lavernia, High grain size stability of nanocrystalline Al prepared bymechanical attrition, Journal of Materials Research. 16 (2001) 3451.

Introduction Nano crystalline materials have received considerable interest for their improved physical, chemical and mechanical properties [1].
Many of these applications require a good understanding of corrosion behavior of the materials as a function of microstructure.
Some researchers have been shown that nanostructure materials have worse corrosion resistance [5,6] and some others have shown better resistance in comparison to coarse grained materials [7-9].
Li, “Oxidation behaviour of Cu thin films on Si wafer at 175–400ºC”, Materials Letters 51(2001), PP.78–84
Jiang, “Brief review of oxidation kinetics of copper at 350 °C to 1050 °C”, Metallurgical and Materials Transactions A, Vol. 37A,(2006), PP. 1231- 1237

The fine grains can improve the strength, ductility and toughness of materials.
Journal of Materials Engineering, 2002, 9:37-39
Materials Science and Engineering A, 2003, (A357): 104-110
Metallurgical and Materials Transactions A, 1996, (27A): 3601-3611
Materials Review, 2010, 24(2): 98-101

It is regarded as an optimal method to change the present condition to try the gasification for various raw materials using current technologies.
As showed in Figure 3, the concentration distributions of different materials of COW slurry are similar with what of coal water slurry, in spite of a little difference in amount.
Except the shooting flow region and the striking region, the concentrations of all the materials are uniform in the rest regions, especially in the pipe flow region, which can provide very good condition for the reductive reaction of the coke.
Acknowledgment This work was supported by the special fund of the national priority basic research of China (Grant No.2004cb217701) and the National Natural Science Foundation of China (Grant No. 51006127).
AIAA Journal, 1964 (2):1662~1664 [4] R.

The relationship between calcium hydroxide concentration in pore solution and the strength of stabilized soils Lei DAI1, a, Xiaoxuan DENG2, b 1 Beijing Building Materials Academy of Sciences Research, Beijing, 100041, China 2Building Materials Institute China Academy of Building Research, Beijing, 100013, China aemail: dailei@bmt-bj.com, bemail:xiaoxuandeng@foxmail.com Keywords: Calcium hydroxide concentration; Pore solution; Strength; Stabilized soils Abstract.
After cement is mixed with clay, cement hydration mainly produces CH, C-S-H and C-A-H, and Ca2+ provided by CH is absorbed by soil until reaching saturation point, then pozzolanic reaction happens between the remaining CH and silica and alumina dissolved from the clay lattice to form additional cementitious material (C-S-H and C-A-H)[7,8].
CH concentrations in pore solution of the stabilized soils represent significant differences for the soils are very different in chemical factors, such as CEC and pozzolanic reaction, which lead to the variation in the consuming amount of Ca2+ provided by cement hydration and the formation amount of cementitious materials, like C-S-H and C-A-H.
The Properties of Cement-Stabilized soils, Proceeding of Residential Workshop on Materials and Methods for Low Cost Road, Rail, and Reclamation Works.
Journal of Geotechnical and Geoenvironmental Engineering ASCE 130 (10), 1042–1050