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The test materials were melted by a 25kg vacuum medium frequency induction furnace.
Sourmail: Materials Science and Technology Vol. 17 (2001), p. 1
[3] Yan Zhang, Yufu Sun, Shaokang Guan, Xiang Deng and Xingyi Yan: Materials Science and Engineering A Vol. 478 (2008), p. 214
[4] Xiangqi Xu, Xiaofeng Zhang, Guoliang Chen and Zhaoping Lu: Materials Letters Vol. 65 (2011), p. 3285
[6] Longmei Wang: Journal of the Chinese Rare Earth Society, Vol. 22 (2004), p. 48 (in Chinese)

Raw materials and mix proportion are shown in Tab.1.
Tab. 1 Mix Proportions of Concrete Number Raw materials consumption (kg/m3) Cracking Cement Sand Gravel Water GGBS Water-reducing agent wp/wc CD1 360 733 1099 168 40 4.4 0.42 CD2 320 733 1099 168 80 4.4 0.42 CD3 280 733 1099 168 120 3.6 0.42 Test Methods (Dumbbell Method – A New Test Technology under Constraint Conditions) This paper proposes a new test technology, Dumbbell method, for evaluating the anti-cracking performance of concrete under constraint conditions (Fig. 1), based on which, Dumbbell device with stress riser for concrete crack test is invented [2].
Acknowledgements This work was financially supported by National Natural Science Foundation of China (Grant Nos. 51208018), Science and Technology Project of CAAC (MHRD201225) and Beijing Nova Program (Z121110002512090).
Advanced Materials Research. 2013, v 807-809, p 2699-2702 [3] Liu Yan, Wang Pei-Ming, Guo Yan-Hui.
Journal of Building Materials. 2011 v 14, n 5, p 694-697

Then artifitical zeolites can be synthetized by chemical reagent or other materials, such as red mud, fly ash, kaolin, tailings and so on.
As the cost of zeolites synthetized by chemical reagent is relatively high, waste residue as raw material is worth research.
Materials and Methods The fly ash used in this study was obtained from Hexi power plants located in Inner Mongolia, China.
Armagan, Removal of ammonium ion from aqueous solution using natural Turkish clinoptilolite, Journal of Hazardous Materials Vol.136 (2006)p. 604–609
Ahmaruzzaman, A review on the utilization of fly ash, Progress in Energy and Combustion Science Vol.36 (2010) P.327–363

Study on the Evaluation Method of Engineering General Contracting Enterprises Multi-project Selection Xinhua Wu1,a, Na Tang2,b, Fengzhen Liu1,c 1Department of Resource and civil engineering, Shandong University of Science and Technology, Taian, Shandong province, 271019,China 2 Graduate School of SDUST, Shandong University of Science and Technology, Tsingtao, Shandong province, 266590,China axinhuawu@126.com, btangna2012@126.com, clfz828@126.com Keywords: Engineering General Contractor,Multi-Project Management,Evaluation Index System, Multi-Level Gray Relational Analysis.
Resource is the necessary security factors about the success of the project.When choosing project,enterprises must consider resources which can be provide for the project.In general, including human resources, material resources, and technical ability, financing ability, historical experience and these resources can be obtained effectively by the project.
Acknowledgments This study was funded by the Tai'an City Science and Technology Development Project,grant 20105007 and Shandong University of Science and Technology Spring Bud Plan,grant 2010AZZ123.
Comprehensive evaluation theory and method (Science Press, China.2005),In Chinese [8] Hung Yu,Xiaogang Wu:Journal of Business Economics, Vol.236 (6) (2011),p34-35,In Chinese [9] DaoJiang Wei:Journal of Xiangfan University, Vol.30 (5)(2009), p36,In Chinese [10] SiFeng Liu:Gray system theory and its application ( Science Press,China,2010),In Chinese [11] Dong Du, QingHua Pang:A modern comprehensive evaluation method and selected case (Tsinghua University Press,China,2005),In Chinese

Iron hook is widely used to strengthen Chinese tenon-mortise joint to enhance its strength in southern China districts.To find strengthening effects of this material, by shaking table tests dynamic characters as well as seismic responses of a 1:8 scale wooden frame model were studied under conditions that each of its tenon-mortise joint was/was not strengthened by iron hook.By white noise excitation,values of basic frequency of both unstrengthened and iron hook strengthened models were obtained;by inputing El-centro earthquake waves of different peak acceleration values, displacement and acceleration responses of the models were obtained,dynamic magnification factors for tenon-mortise joints as well as models were discussed.Results show that after each tenon-mortise joint of the model is strengthened by iron hook,its basic frequency increases,its displacement and acceleration responses under earthquakes decrease.However as iron hook can only restrict tenon from pulling out of mortise but
Komatsu: Journal of Wood Science Vol.52 (2006),p. 58 [2] W.S.
Hsu: Journal of Wood Science Vol.53 (2007),p. 401 [3] Q.F.
Xue: China Civil Engineering Journal Vol. 41 (2008),p. 28 (in Chinese) [4] Y.S.

Concrete is a porous material.
It is generally accepted that the flexural behavior of a RC member depends on the stress-strain relationship of the materials used.
Concrete is a porous material.
Polak, Influence of freezing-and-thawing damage on behavior of reinforced concrete elements, ACI Materials Journal, 104(4), (2007):369-378
Qian, Effect of freeze-thaw cycles on the stress-strain curves of unconfined and confined concrete, Materials and Structures, in press

Acknowledgments The authors are grateful for the supports of National Natural Science Foundation of China (No.50878098, No.50908103).
According to different environmental conditions, different cover thickness and materials should be specified.
References [1] GrardB., MarchandJ.Influence of cracking on the diffusion properties of cement-based materials Part I: Influence of continuous cracks on the steady-state regime[J].
Journal of Materials in Civil Engineering, 2003, 15(1): 183-191
International Journal of Solids and Structures, 2007,44(18):5848-5874

Fig. 3 (a) and (b) shows that no grain can be found in the as-received and batch_1 material.
Acknowledgement The authors would like to thank the Ministry of Science and Technology of the Republic of China, Taiwan, for financially supporting this research under Contract No.
Chan, et al., Modeling of grain size effect on micro deformation behavior in micro-forming of pure copper, Materials Science and Engineering A, 527(2010) 6638-6648
Hu, State of the art in micro forming, International Journal of Machine Tools and Manufacture, 46 (2006) 1172-1179
[5] ASTM, 1989, Annual Book of ASTM Standards: Metallography, nondestructive testing, Press: American Society for Testing & Materials, 121-155

This is why measuring the stresses in bulk materials with coarse grains is difficult.
Thus, the DEM is suitable for strain measurement of bulk materials such as coarse grains and welded parts.
Additionaly, this method is characterized by residual stress evaluation of bulk materials.
Shobu: Quantum Beam Science, Vol. 4, No. 3 (2020), p. 1
Ledbetter: British Journal of Non-Destructive Testing, Vol. 23 (1981), p. 286

Application of Chelating Collectors in the Flotation of Copper Minerals Fei Xiong 1, Yanjun Li 2, Zheng Zhang 1, 3, Guofang Du 1, Yaozhong Lan 1, a 1 Research Institute of Engineering and Technology, Yunnan University, Kunming 650091, PR China 2 Kunming Center for Disease and Prevention, Kunming 650228, PR China 3 Department of Materials Science and Technology, Yunnan University, Kunming 650091 PR China a Authors to whom correspondence should be addressed.
Aplan: International Journal of Mineral Processing Vol. 58 (2000), p. 1-13
Hanson: International Journal of Mineral Processing Vol. 33 (1991), p. 33-47
McGlashan: International Journal of Mineral Processing Vol. 58 (2000), p. 15-33
Luo: Journal of Guangzhou Non-ferrous Metals Vol. 7 (1997), p. 85-89.