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Microstructure and Mechanical Properties of Shale Ceramsite Concrete Xiu-Hua Zheng 1,a , Bao-Sheng Zhang, Jie Yuan b, Chi Xu, Yong-Zhi Guo and Li-Juan Kong 1 School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, China a zhengxiuhua651@163.com, byuanjie@hit.edu.cn Keywords: Shale ceramsite; pre-wetted; microstructure; strength Abstract.
Experimental Program Material and Mix Proportions of Concrete.
[3] T.Y.Lo, H.Z.Cui:Effect of Porous Lightweight Aggregate on Strength of Concrete, Materials Letters 58(2004), pp.916-919
[4] Jiang Zhengwu, Sun Zhenping, Wang Peiming: Study on autogenous relative humidity change and autogenous shrinkage of cement pastes, Journal of Building Materials, 2003(4), pp. 345-349 (in Chinese)
[5] Qin Weizu: Some aspects of the utilization of fly ash to develop high performance concrete, Journal of Building Materials, 1999(2), pp.153-158 (in Chinese).

Different concrete materials, mixing proportion, structure conditions and construction methods have different influences.
Xu: Journal of Yangtze River Scientific Research Institute.
[4] BAZANT Z P: Materials and Structures, RILEM, Paris, (1970), P.19:3
Zhu: Journal of Hydraulic Engineering, Vol.40 (2009), p.969.
Qiang: Advanced Materials Research.Vols.163-167 (2011), p.259.

Material Test and Methods Test Materials and Mix Proportion.
The materials used in the test included the ordinary portland cement of grade PO.42.5, medium sand whose fineness modulus was in the range of 2.4-3.0 and well graded, well-graded stones with 8-20mm grain size, first grade fly ash, water reducing agent of flower brand as well as city water.
References [1] Rongxi Shen, Qi Cui, Qinghai Li, “Reinforced Cement-based Composite Materials of the New Textile Fiber”, China Building Material Industry Press, Beijing, China, 2004.
(In Chinese) [2] Bentur A., Mindess S., “Fiber Reinforced Cementitious Composites”, Elsevier Applied Science, London, UK, 1990
[4] Aiyun Wang, Yilei Hao, “Applications of Milling Steel Fiber Reinforced Concrete on Industrial plant Floor, Journal of Building Technology, Vol. 36,No. 9, 691-692, 2005.

Under such dynamic conditions, the strain-rate dependence of material response causes the material behavior to be significantly different from what is observed under quasi-static conditions.
Acknowledgement This research is supported by the National Natural Science Foundation of China under grants 50139010 at Dalian University of Technology, China.
Materials and Structures, 1991(24): 425-450
ACI Materials Journal. 1998, 95(6): 435-439
Journal of Hydraulic Engineering, 2005, 36(7): 846-852.

Indentation test is a new detection method, which can completely show the change of the plastic work in the indentation process, and has a wide application prospect in the evaluation of strength and plasticity of materials.
According to the GB / T 228.1-2010 "Tensile Test of Metallic Materials Part 1: Room Temperature Test Method [4]" Appendix D specimen design method, rectangular cross-section specimens were adopted.
Materials Science and Engineering: A, 2011,528(3):1648-1655
The International Journal of Advanced Manufacturing Technology, 2014,71(1-4):421-428
Welding Journal, 2014(10):17-20.

A1100-H14 sheet metal is selected as billet material.
Acknowledgement The work was supported by the Natural Science Foundation of Zhejiang Province, PR China (Grant No.
Y1111068) and the Natural Science Foundation of Ningbo City, Zhejiang Province (Grant No.2011A610163).
Mould & Die material and its using life-span.
Chinese Journal of Mechanical Engineering, Vol.44(2008), p266, in Chinese.

Materials A series of mesoporous alumina were prepared by a single-step solgel method.
Microporous and Mesoporous Materials, 2007,100: 183-190
Microporous and Mesoporous Materials, 2010,128: 48-55
Materials Letters, 2010,64: 1858-1860
Microporous and Mesoporous Materials, 2006,93: 212-216.

Those with mean pore size less than 2 nm are called micro-porous ones and a mesoporous material have the mean pore size between 2 and 50nm and those with pore size larger than 50nm are called macroporous materials[8,9].
Porosity is a fraction between 0 and 1, different porous materials have different porosities, some of them are quite fixed and the porosity of different materials may be quite different [10].
Davis: Ordered porous materials for emerging applications, Nature, 2002, 417, p.813-821
Zhao: Journal of Material Chemistry, Vol.16 (2006), p.623-625
[9] Benxue Hu, Yanfeng Xu: Atomic Energy Science and Technology, Vol.43, No.5(2009), p. 431-434

Materials and methods The material used was Bioglass, known as 45S5 (45% SiO2, 6% P2O5, 24.5% CaO and 24.5 % Na2O all in weight percent) was prepared by melting at 1400°C for four hours and then quenched to the water to have powder form of the glasses.
[3] Ducheyne P. 1985, Bioglass coatings and bioglasscomposites as implant materials.
Res., p. 825-830 [5] Neo, M., Voig, C.F., Herbst, H., Gross, U.M., 1998, Osteoblast reaction at the interface between surface active materials and bone in vivo: A study using in situ hybridization, J.
Hoffman.,1996, Biomaterials Science : An Introduction to Materials in Medicine Academic Press.
Sandiego [7]Fazan F, Marquis PM.. 2000, Journal of Material Science: Materials in Medicine; 11: 787-792

In order to provide a material object for researching the least privilege principle, we define the least privilege mining problem (LPMP) and its two variations: δ-approx LPMP and MinNoise LPMP.
The main contributions of this paper is to provide a material aim for research the least privilege principle of RBAC by mapping this problem to some formal definitions in mathematics.
Communications in Computer and Information Science, 2008, 9:146-157 [4] Jaideep Vaidya, Vijayalakshmi Atlur, Qi Guo.
Journal of Universal Computer Science, 2009, 15(3):538~554 [8] M.A.