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Online since: December 2012
Authors: M.A. Megat Johari, B.H. Abu Bakar, Bassam A. Tayeh, A.M. Zeyad
Zeyad1,3 d
1School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia
2Engineering Division, Islamic University of Gaza, Gaza, Palestine
3Department of Civil Engineering, University of Science and Technology, Sana'a, Yemen
abtayeh@iugaza.edu, bcebad@eng.usm.my, ccemamj@eng.usm.my, dzeyad_eng@yahoo.com
Keywords: Adhesion; Concrete restoration systems; Interfacial transition zone; Reactive powder concrete; Silica fume; Substrate.
Table 1 Chemical compositions of cement and silica fume Compositions SiO2 Al2O3 Fe2O3 CaO MgO P2O5 K2O SO3 TiO2 MnO Na2O Cl- OPC [%] 19.01 4.68 3.2 66.89 0.81 0.08 1.17 3.66 0.22 0.19 0.09 - SF [%] 92.26 0.89 1.97 0.49 0.96 - 1.31 0.33 - - 0.42 0.09 Table 2 Mix proportions for RPC and OC substrate Concrete Type [kg/m3] OPC [Type1] Coarse Aggregate [max. 12.5mm] River Sand [F.M. =2.4] Mining Sand [<1180mm] Silica Fume [23.7 m2/g] Steel Fiber [Lf = 10mm, df =0.2mm] Super-plasticizer Water W/B RPC 768 - - 1140 192 157 40 144 0.15 OC substrate 400 930 873 - - - 4 200 0.5 Specimens Preparation Each of the tested specimen comprised of two different materials, which were the OC as a substrate and RPC as a repair material.
The bond strength between OC substrate and RPC repair material also was calculated.
This guideline is particularly useful for the selection of appropriate repair material.
Journal of Composites for Construction Vol 7. (2003) p. 174 [6] ASTM-C88: Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete by Slant Shear, West Conshohocken (1999) [7] G.
Table 1 Chemical compositions of cement and silica fume Compositions SiO2 Al2O3 Fe2O3 CaO MgO P2O5 K2O SO3 TiO2 MnO Na2O Cl- OPC [%] 19.01 4.68 3.2 66.89 0.81 0.08 1.17 3.66 0.22 0.19 0.09 - SF [%] 92.26 0.89 1.97 0.49 0.96 - 1.31 0.33 - - 0.42 0.09 Table 2 Mix proportions for RPC and OC substrate Concrete Type [kg/m3] OPC [Type1] Coarse Aggregate [max. 12.5mm] River Sand [F.M. =2.4] Mining Sand [<1180mm] Silica Fume [23.7 m2/g] Steel Fiber [Lf = 10mm, df =0.2mm] Super-plasticizer Water W/B RPC 768 - - 1140 192 157 40 144 0.15 OC substrate 400 930 873 - - - 4 200 0.5 Specimens Preparation Each of the tested specimen comprised of two different materials, which were the OC as a substrate and RPC as a repair material.
The bond strength between OC substrate and RPC repair material also was calculated.
This guideline is particularly useful for the selection of appropriate repair material.
Journal of Composites for Construction Vol 7. (2003) p. 174 [6] ASTM-C88: Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete by Slant Shear, West Conshohocken (1999) [7] G.
Online since: October 2014
Authors: Roman Jaskulski, Jacek Szpetulski, Anna Gabrjelska, Ewelina Tomaszewska, Wojciech Kubissa
These materials usually can not be utilized in another way
or their utilization is very complicated.
International Journal of Concrete Structures and Materials, 2013
Innovative materials and techniques in concrete construction.
In Humanities, Science and Engineering (CHUSER), 2011 IEEE Colloquium on, pages 208--211, Dec 2011
ACI 229R-99 Controlled Low-Strength Materials, 1999
International Journal of Concrete Structures and Materials, 2013
Innovative materials and techniques in concrete construction.
In Humanities, Science and Engineering (CHUSER), 2011 IEEE Colloquium on, pages 208--211, Dec 2011
ACI 229R-99 Controlled Low-Strength Materials, 1999
Online since: February 2016
Authors: Chao Peng, Gui Qiang Li, Cheng Xin Sui, Hui Meng Zhang, Yu Hui Zhang
Besides, cellular glass can be produced from the recycled solid waste materials, which is environmental friendly and cost-effective[6].
Acknowledgments This work was funded by the National Natural Science Foundation of China (No.11405170).
The authors would like to thank China Building Materials Academy for assistance with the various experiments.
Zhang, Effects of Technological System on Foamed properties of Foam Glass and its Mechanism, Materials Review.
Vol.28 (2010), p. 25 (in Chinese) Vol.37 (2009), p. 33 (in Chinese) [5] Y.L.Wang, Z.M.He, H.X.Qiao, W.H.Hou, Research about the Performance of Foam Glass Exterior Insulation System, New Building Materials, Vol.7 (2011), p. 86 (in Chinese) [6] Q.Yu, Y.Y.Jiang, C.Y.Wang, Foam Glass and Cyclic Utilization of Solid Offal, Materials Review, Vol.23 (2009), p. 93 (in Chinese) [7] S.Qian, J.Lin, B.S.Tang, Preparation of Foam Glass from Vitrified Municipal Solid Waste Incinerator Ash, Journal of the Chinese Ceramic Society.
Acknowledgments This work was funded by the National Natural Science Foundation of China (No.11405170).
The authors would like to thank China Building Materials Academy for assistance with the various experiments.
Zhang, Effects of Technological System on Foamed properties of Foam Glass and its Mechanism, Materials Review.
Vol.28 (2010), p. 25 (in Chinese) Vol.37 (2009), p. 33 (in Chinese) [5] Y.L.Wang, Z.M.He, H.X.Qiao, W.H.Hou, Research about the Performance of Foam Glass Exterior Insulation System, New Building Materials, Vol.7 (2011), p. 86 (in Chinese) [6] Q.Yu, Y.Y.Jiang, C.Y.Wang, Foam Glass and Cyclic Utilization of Solid Offal, Materials Review, Vol.23 (2009), p. 93 (in Chinese) [7] S.Qian, J.Lin, B.S.Tang, Preparation of Foam Glass from Vitrified Municipal Solid Waste Incinerator Ash, Journal of the Chinese Ceramic Society.
Online since: February 2011
Authors: T.V. Voo, M. Mariatti, L.C. Sim
The properties of thin film are reported to be drastically different from that of the bulk materials [2, 3].
The materials properties have been summarized and shown in Table 1.
Journal of Applied Physics (1958):29 (5), 858–862
Materials Research Society Symposium Proceedings (1988) 121, 717–729
Bishop.Physical Metallurgy and Materials Engineering:Science, Process, Applications.
The materials properties have been summarized and shown in Table 1.
Journal of Applied Physics (1958):29 (5), 858–862
Materials Research Society Symposium Proceedings (1988) 121, 717–729
Bishop.Physical Metallurgy and Materials Engineering:Science, Process, Applications.
Online since: October 2010
Authors: Bian Fang Zhang, Zong Lin Yan
The ionic equations for these reactions are:
Ni2++ 2Fe3++8OH-= Ni(OH)2+2Fe(OH)3= NiFe2O4+4H2O
Zn2++2Fe3++8OH-= Zn(OH)2+2Fe(OH)3= ZnFe2O4+4H2O
0.36Zn2++0.64Ni2++2Fe3++8OH-=0.36Zn(OH)2+0.64Ni(OH)2+2Fe(OH)3
=Ni0.64Zn0.36Fe2O4+4H2O
Results and Discussion
Using a Japanese science D/max-RB type X-ray diffractometer, structures of the powdered specimens N1, Z2 and NZ3 were analyzed.
Acknowledgments The work was supported by National Science Fund for Distinguished Young Scholars (NO.50625518).
Chen, Journal of Materials Science. 36, 5115(2001)
Acknowledgments The work was supported by National Science Fund for Distinguished Young Scholars (NO.50625518).
Chen, Journal of Materials Science. 36, 5115(2001)
Online since: December 2010
Authors: Guo Hua Jiao, Gang Huang, De Zhi Wen, Chun Quan Zhou, Kai Ming Wu
Mechanical Properties of Heat Treated 65Mn Steel Produced by
Compact Strip Production
Gang Huang1,a,Guohua Jiao2,b, Dezhi Wen2,c,
Chunquan Zhou2,d and Kaiming Wu1,e
1Institute of Advanced Steels and Welding Technology, Hubei Province Key Laboratory for Systems Science on Metallurgical Processing, Wuhan University of Science and Technology, Wuhan 430081, Hubei Province, China;
2Lianyuan Iron and Steel Co.
Compact strip process is an advanced steel manufacturing technology involving the principles of science, technology, and engineering [1].
Wu: Journal of Materials Engineering, 8 (2010), p. 72.
Compact strip process is an advanced steel manufacturing technology involving the principles of science, technology, and engineering [1].
Wu: Journal of Materials Engineering, 8 (2010), p. 72.
Online since: November 2014
Authors: Nan Li, Jing Xue, Xiang Dong Yang
Introduction
With the development of the science and technology, sensing techniques have been widely applied in many fields, such as industrial production, medical hygiene and traffic transportation, etc..
The sensor performance can be evaluated based on the following aspects: 1) penetration depth (the penetration depth of the electric field lines); 2) signal strength (the value of the capacitance) and noise suppression; 3) measurement sensitivity (the sensitivity of the voltage and electric field changes) and the measurement dynamic range of the sensor [5, 6].The design parameters of the sensor are: 1) geometric shape of the sensor excitation and detective plates; 2) materials of the sensor electrodes; 3) the number of the sensor electrodes and gaps between the electrodes. 4) The selection for the shape and location of the shield electrode of the capacitive sensor.
Acknowledgement The support provided by the National Natural Science Foundation of China (No. 51105008).
[5] Olmos, A.M., Primicia, J.A., Marron, J.L.F., et al.(2007) Science Measurement&Technology, 1(4): 216 – 223
Sensors Journal, 7(4), 525-535.
The sensor performance can be evaluated based on the following aspects: 1) penetration depth (the penetration depth of the electric field lines); 2) signal strength (the value of the capacitance) and noise suppression; 3) measurement sensitivity (the sensitivity of the voltage and electric field changes) and the measurement dynamic range of the sensor [5, 6].The design parameters of the sensor are: 1) geometric shape of the sensor excitation and detective plates; 2) materials of the sensor electrodes; 3) the number of the sensor electrodes and gaps between the electrodes. 4) The selection for the shape and location of the shield electrode of the capacitive sensor.
Acknowledgement The support provided by the National Natural Science Foundation of China (No. 51105008).
[5] Olmos, A.M., Primicia, J.A., Marron, J.L.F., et al.(2007) Science Measurement&Technology, 1(4): 216 – 223
Sensors Journal, 7(4), 525-535.
Online since: April 2013
Authors: Jing Ma, Qing Feng Liu, Li Ying Tan
Experimental Investigation of Neutron Irradiation Effect on Silica-based Erbium-Doped Fiber Amplifier
Jing Ma1, Qingfeng Liu2,a, Liying Tan3
1,2,3 Institute of Opto-Electronics, National Key Laboratory of Tunable Laser Technology,
Harbin Institute of Technology, Science Park 2A-233, Harbin 150080, Heilongjiang, P.
On the ground, a certain higher gain and lower noise figure could be reached by high doping concentration of erbium, thus the length of fiber could be shortened[1], then the radiation induced loss weakened, however, higher-doped technology such as adding other materials, would lower the erbium fiber mechanical strength[2].
IEEE, Transactions on Nuclear Science, (1993), 40(4): p.851~856 [3] Ju Han Lee, Won Jae Lee and Namkyoo Park, Comparative Study on Temperature-Dependent Multichannel Gain and Noise Figure Distortion for 1.48-and 0.98-μm Pumped EDFA’s, IEEE, Photonics Technology Letters, Vol.10, No.12, (1998), p.1721-1723 [4] Jing Ma, Mi Li, Liying Tan, etc.
IEEE, Transactions on Nuclear Science.
Journal of Lightwave Technology.
On the ground, a certain higher gain and lower noise figure could be reached by high doping concentration of erbium, thus the length of fiber could be shortened[1], then the radiation induced loss weakened, however, higher-doped technology such as adding other materials, would lower the erbium fiber mechanical strength[2].
IEEE, Transactions on Nuclear Science, (1993), 40(4): p.851~856 [3] Ju Han Lee, Won Jae Lee and Namkyoo Park, Comparative Study on Temperature-Dependent Multichannel Gain and Noise Figure Distortion for 1.48-and 0.98-μm Pumped EDFA’s, IEEE, Photonics Technology Letters, Vol.10, No.12, (1998), p.1721-1723 [4] Jing Ma, Mi Li, Liying Tan, etc.
IEEE, Transactions on Nuclear Science.
Journal of Lightwave Technology.
Online since: October 2011
Authors: Ying Cheng Hu, Wei Lu, Jun Shen, Jia Yao, Jin Li
Research on Tensile Strength of Wood Single Lap Gluing Joint
Wei Lu1,2,3, Yingcheng Hu1,2,a, Jun Shen1,2, Jia Yao1,2,3, Jin Li1,2
1 Key Laboratory of Bio-based Material Science and Technology of Ministry of Education,
Northeast Forestry University, 150040, Harbin, China
2 College of Material Science and Engineering, Northeast Forestry University, Harbin, China
3 College of mechanical engineering, Jiamusi University, 154007, Jiamusi, China
a Yingchenghu@163.com (Corresponding Author)
Keywords: Single lap joint; Tensile strength; Maximum tensile load
Abstract: The tensile strength of joints is one of the most important indexes which can affect joint quality.
References [1] Jian Li. in: Wood Science.
International Journal of Adhesion & Adhesives, Vol.29 (2009), p.173-185 [7] Kelin Ye.
References [1] Jian Li. in: Wood Science.
International Journal of Adhesion & Adhesives, Vol.29 (2009), p.173-185 [7] Kelin Ye.
Online since: October 2013
Authors: Yu Yan Liu, Shao Zhu Liu, Wei Li Liu, Zhi Gang Liu, Jing Chang Li, Xiao Chun Zhang, Yong Zhen Wang
In the process of oil gelation, the spilled oil is transformed from a liquid into semi-solid or rubber-like materials and supramolecular self-assembly technology is applied.
Environmental science & technology, 2002, 36(22): 4754-4760
Science China Chemistry, 2011, 54(4): 575-586
Journal of colloid and interface science, 2008, 327(1): 233-242
Environmental science & technology, 2002, 36(22): 4754-4760
Science China Chemistry, 2011, 54(4): 575-586
Journal of colloid and interface science, 2008, 327(1): 233-242