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Online since: February 2014
Authors: Wasan Teerajetgul, Attasit Sirivachiraporn, Suppachai Sinthaworn
Concrete had been a well known base material for construction worldwide.
Supplementary material such as silica fume or fly ash is very well-know to effectively reduce the total volume of pore.
Lime stone powder can also be used as a filling material to fill pores in concrete [4].
Experimental Procedure Materials used in this research consisted of Ordinary Portland cement (Elephant brand, complying with ASTM Type I, manufactured by Siam Cement Co., Ltd.), river sand, coarse aggregate (MSA 25mm) had specific gravities of 2.70 and water absorptions of 0.38%., water, Superplasticizer (Sika® ViscoCrete® -10, polycarboxylic acid-based) and quarry dust collected from the quarry industry located in The East of Thailand.
ARPN Journal of Engineering and Applied Sciences 4(4): 83-89 [4] Menadi B., Kenai S., Khatib, J., Aı¨t-Mokhtar A. (2009),"Strength and durability of concrete incorporating crushed limestone sand" Construction and Building Materials 23 (2009)
Supplementary material such as silica fume or fly ash is very well-know to effectively reduce the total volume of pore.
Lime stone powder can also be used as a filling material to fill pores in concrete [4].
Experimental Procedure Materials used in this research consisted of Ordinary Portland cement (Elephant brand, complying with ASTM Type I, manufactured by Siam Cement Co., Ltd.), river sand, coarse aggregate (MSA 25mm) had specific gravities of 2.70 and water absorptions of 0.38%., water, Superplasticizer (Sika® ViscoCrete® -10, polycarboxylic acid-based) and quarry dust collected from the quarry industry located in The East of Thailand.
ARPN Journal of Engineering and Applied Sciences 4(4): 83-89 [4] Menadi B., Kenai S., Khatib, J., Aı¨t-Mokhtar A. (2009),"Strength and durability of concrete incorporating crushed limestone sand" Construction and Building Materials 23 (2009)
Online since: January 2008
Authors: Seung Joon Ahn, Ho Seob Kim, Dae Wook Kim, Seong Joon Ahn
Study on the Recognition of the Registration Marks
for Low-Energy Microcolumn Lithography
Seungjoon Ahn1,a*, Ho Seob Kim
1,b , Dae-Wook Kim
1,c and Seong Joon Ahn2,d
1
Department of Physics & Advanced Material Science/CNST, Sun Moon University, Korea
2
Division of I&C Engineering/CNST, Sun Moon University, Korea
a
sjan@sunmoon.ac.kr, bhskim3@sunmoon.ac.kr, cphykdw@sunmoon.ac.kr,
d
sjahn0@sunmoon.ac.kr
Keywords: Low-energy lithography, microcolumn, recognition of the registration mark, PMMA resist,
SiO2/ITO.
Besides, the low-energy electrons make little mechanical damage to the materials being processed and have very small proximity effect caused by electron scattering that results in degradation of image quality.
Therefore the BSE intensities are different each other according to the materials where the back-scattering take place, and it would be desirable to select the materials of the substrate and registration mark whose attractive forces on electron are different very much.
Materials Line ① Line ② Line ③ Line ④ Average SiO2 42500 52500 55000 57500 51875 Si 15000 20000 15000 20000 17500 ITO 42500 50000 45000 30000 41875 Glass 25000 30000 32500 22500 27500 Summary While the low-energy microcolumn lithography has great advantages as a future semiconductor processing technology, there are several problems remained.
Ahn: Journal of the Korean Physical Society Vol. 49 (2006), p.
Besides, the low-energy electrons make little mechanical damage to the materials being processed and have very small proximity effect caused by electron scattering that results in degradation of image quality.
Therefore the BSE intensities are different each other according to the materials where the back-scattering take place, and it would be desirable to select the materials of the substrate and registration mark whose attractive forces on electron are different very much.
Materials Line ① Line ② Line ③ Line ④ Average SiO2 42500 52500 55000 57500 51875 Si 15000 20000 15000 20000 17500 ITO 42500 50000 45000 30000 41875 Glass 25000 30000 32500 22500 27500 Summary While the low-energy microcolumn lithography has great advantages as a future semiconductor processing technology, there are several problems remained.
Ahn: Journal of the Korean Physical Society Vol. 49 (2006), p.
Online since: May 2012
Authors: Wen Jie Song, Fei Dong, Yu Bai, Wei Ze Sun, Jun Dong
In order to provide convenient, quick, safe and efficient traffic in winter, thawing-out materials with salt are often scattered to such as roads, bridges and city overpasses to thaw out ice or snow so as to prevent slipping.
There are usually two possible ways for chloride ion intrusion in concrete: one is impregnation with chloride ion in raw material or in other admixtures.
All the sources of chloride ion in concrete include in sea environment, industrial environment, raw materials and thawing-out materials.
Acknowledgements This work was financially supported by 2011Science and Technology Research Project of Beijing Municipal Education Commission (KM201110016012) and by Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials, BUCEA.
ACI Materials Journal, 2003, 100(2): 114- 119
There are usually two possible ways for chloride ion intrusion in concrete: one is impregnation with chloride ion in raw material or in other admixtures.
All the sources of chloride ion in concrete include in sea environment, industrial environment, raw materials and thawing-out materials.
Acknowledgements This work was financially supported by 2011Science and Technology Research Project of Beijing Municipal Education Commission (KM201110016012) and by Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials, BUCEA.
ACI Materials Journal, 2003, 100(2): 114- 119
Online since: September 2014
Authors: Hong Qin Yu
This positive link will enrich the understanding of the reader to the reading materials.
The teacher will make appropriate adjustments based on students' feedback, their understanding of the course and their needs to learn. 2.2 Classroom interaction Different from preview, classroom teaching is to complete the reading task, to deepen students' understanding of the materials to be learned.
JiTT approach encourages students to learn to focus clearly on the challenging problem of the reading materials.
Journal of Harbin University, 2002(2): 13-16.
Science and Technology Development and Strategy, 2002(12): 155-156.
The teacher will make appropriate adjustments based on students' feedback, their understanding of the course and their needs to learn. 2.2 Classroom interaction Different from preview, classroom teaching is to complete the reading task, to deepen students' understanding of the materials to be learned.
JiTT approach encourages students to learn to focus clearly on the challenging problem of the reading materials.
Journal of Harbin University, 2002(2): 13-16.
Science and Technology Development and Strategy, 2002(12): 155-156.
Online since: October 2007
Authors: Shou Mei Xiong, Sang Hyun Cho, Jeong Kil Choi, Zhi Peng Guo
Influence of Processing Parameters on Interfacial Heat Transfer
Coefficient at the Metal-Die Interface of Die Cast AM50 Alloy
Zhipeng Guo 1, a, Shoumei Xiong 1,b, Sang-Hyun Cho2,c and Jeong-Kil Choi2,d
1
Key Laboratory for Advanced Manufacturing by Materials Processing Technology, Department of
Mechanical Engineering, Tsinghua University, Beijing 100084, China
2
Advanced Material R&D Center, Korea Institute of Industrial Technology, 994-32, Dongchun-Dong,
Yonsu-Ku, Inchon, Republic of Korea
a
gzp04@mails.tsinghua.edu.cn, bsmxiong@tsinghua.edu.cn
cchosh@kitech.re.kr, dcjk@kitech.re.kr
Keywords: Interfacial heat transfer coefficient; High pressure die casting process; AM50 alloy
Abstract.
The casting material is AM50 and the die material is H13.
Charles-André Gandin and Michel Bellet, TMS (The Minerals, Metals & Materials Society), 2006, p. 1205
Pehlke: Metallurgical and Materials Transactions Vol. 16B (1985), p. 585
Nef: Journal of Materials Processing Technology Vol. 169 (2005), p. 223
The casting material is AM50 and the die material is H13.
Charles-André Gandin and Michel Bellet, TMS (The Minerals, Metals & Materials Society), 2006, p. 1205
Pehlke: Metallurgical and Materials Transactions Vol. 16B (1985), p. 585
Nef: Journal of Materials Processing Technology Vol. 169 (2005), p. 223
Online since: March 2012
Authors: Jun Zuo, Xue Feng Hu, Li Jun Yan, Yue Cheng, Xiao Juan Yan, Tan Tan Ge
XRD patterns showed the prepared material was the complex of Cu2O and NiFe2O4.
In order to overcome the disadvantage and enhance the re-collecting ability, a magnetic material with strong magnetization, such as NiFe2O4, can be combined with Cu2O.
Project Supported by National Natural Science Key Foundation of China (41130526) & Nano-material Chemistry of Shanghai Leading Academic Disciplines (B13010107010) & Shanghai Leading Academic Disciplines (S30109) References [1] J.H.
Journal of University of Science and Technology Beijing, Vol. 32(2010), 1045-52.
In order to overcome the disadvantage and enhance the re-collecting ability, a magnetic material with strong magnetization, such as NiFe2O4, can be combined with Cu2O.
Project Supported by National Natural Science Key Foundation of China (41130526) & Nano-material Chemistry of Shanghai Leading Academic Disciplines (B13010107010) & Shanghai Leading Academic Disciplines (S30109) References [1] J.H.
Journal of University of Science and Technology Beijing, Vol. 32(2010), 1045-52.
Online since: April 2013
Authors: Shi Yun Zhong, Wei Deng Chen
Influences of Processing and Testing Conditions on Flexural Behavior of Fiber-reinforced Polymer-modified Cement Mortar
Weideng Chena, Shiyun Zhongb*
School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804, China
a chenweideng@163.com, b syzhong@tongji.edu.cn
*Corresponding author: syzhong@tongji.edu.cn
Keywords: polymer-modified mortar; fiber-reinforced; flexural behavior; crack; three-point bending test
Abstract.
Li, Strain-hardening fiber cement optimization and component tailoring by means of a micromechanical model,Construction and Building Materials. 24 (2010) 130-139. ,[] Hyun-Do Yun, Sun-Woo Kim, Young-Oh Lee, Keitetsu Rokugo, Tensile behavior of synthetic fiber-reinforced strain-hardening cement-based composite (SHCC) after freezing and thawing exposure, Cold Regions Science and Technology. 67(2011) 49-57. ], and the cracked material is weak facing aggressive media, even include water.
Materials and Tests All the specimens have the same composition, and moulded in size of 40×40×160 mm3.
Fig. 1 Illustration of the test apparatus Fig. 2 Loading-displacement (deflection) diagram with LVDT[[] Zhang Dong, Liu Juanyu, Chen Bing, Wu Keru, Analysis of the Determination of Fracture Energy of Concrete Using Three-point-bending Method , Journal of Building Materials. 2(1999) 206-211. ] of a typical bending test After the test is completed, a loading-displacement diagram like Fig.2 is got.
Mixing the materials in low speed is necessary to prevent the decrease of fluidity and the increase of viscosity, so that the mortar will have better mechanic performance.
Li, Strain-hardening fiber cement optimization and component tailoring by means of a micromechanical model,Construction and Building Materials. 24 (2010) 130-139. ,[] Hyun-Do Yun, Sun-Woo Kim, Young-Oh Lee, Keitetsu Rokugo, Tensile behavior of synthetic fiber-reinforced strain-hardening cement-based composite (SHCC) after freezing and thawing exposure, Cold Regions Science and Technology. 67(2011) 49-57. ], and the cracked material is weak facing aggressive media, even include water.
Materials and Tests All the specimens have the same composition, and moulded in size of 40×40×160 mm3.
Fig. 1 Illustration of the test apparatus Fig. 2 Loading-displacement (deflection) diagram with LVDT[[] Zhang Dong, Liu Juanyu, Chen Bing, Wu Keru, Analysis of the Determination of Fracture Energy of Concrete Using Three-point-bending Method , Journal of Building Materials. 2(1999) 206-211. ] of a typical bending test After the test is completed, a loading-displacement diagram like Fig.2 is got.
Mixing the materials in low speed is necessary to prevent the decrease of fluidity and the increase of viscosity, so that the mortar will have better mechanic performance.
Online since: May 2015
Authors: Noraiham Mohamad, Mohd Asyadi Azam, Nor Najihah, Elyas Talib, Mohd Shahril Amin Bistamam, Aisyah Hassan, Raja Noor Amalina Raja Seman, Nor Syafira Abdul Manaf
Moreover, AC is easy to be synthesized that lead to a reasonable price range compared to other carbon materials.
AC is often used as an electrode material in energy storage devices [6], but its advantages in structure properties could make them one of the influential materials for composites.
Rubber materials may suit various industrial applications, such as tire component, electrical shield, shock damper, and vibration-proof [7].
Trauth, Aligned carbon nanotube arrays formed by cutting a polymer resin-nanotube composite, Science 265 (1994) 1212-1214
Azam, Development of high performance electrochemical capacitor: A systematic review of electrode fabrication technique based on different carbon materials, ECS Journal of Solid State Science and Technology. 2 (2013) M3101-M3119
AC is often used as an electrode material in energy storage devices [6], but its advantages in structure properties could make them one of the influential materials for composites.
Rubber materials may suit various industrial applications, such as tire component, electrical shield, shock damper, and vibration-proof [7].
Trauth, Aligned carbon nanotube arrays formed by cutting a polymer resin-nanotube composite, Science 265 (1994) 1212-1214
Azam, Development of high performance electrochemical capacitor: A systematic review of electrode fabrication technique based on different carbon materials, ECS Journal of Solid State Science and Technology. 2 (2013) M3101-M3119
Online since: August 2020
Authors: Ahmed Hassan El Shazly, Dina Ahmed El-Gayar, Nourwanda Mohamed Serour, Shaaban Attia Nosier
Materials used were organic phase change material (n-octadecane) of 99% purity melting temperature of 28 °C used as dispersion media and TiO2 nano-powder of 99.5% purity and average diameter size of 30±5 nm.
Zhu, Y.S.Yin, Y.S.Lin, A novel one-step chemical method preparation of copper nanofluids, Journal of Colloid and Interface Science, 227, 100-130, 2004
Jedsadaratanachai, Heat transfer enhancement of TiO2/water nanofluid in a heat exchanger tube equipped with overlapped dual twisted-tapes, Engineering Science and Technology, an International Journal, 18, 336-350, 2015
Thermal Science, 44, 367-373, 2005
Mataoui, A review on how the researchers prepare their nanofluids, International Journal of Thermal Sciences, 76, 168-189, 2014
Zhu, Y.S.Yin, Y.S.Lin, A novel one-step chemical method preparation of copper nanofluids, Journal of Colloid and Interface Science, 227, 100-130, 2004
Jedsadaratanachai, Heat transfer enhancement of TiO2/water nanofluid in a heat exchanger tube equipped with overlapped dual twisted-tapes, Engineering Science and Technology, an International Journal, 18, 336-350, 2015
Thermal Science, 44, 367-373, 2005
Mataoui, A review on how the researchers prepare their nanofluids, International Journal of Thermal Sciences, 76, 168-189, 2014
Online since: December 2011
Authors: Yu Hou Wu, Qiang Gao, De Hong Zhao
For brittle rock material machining, can achieve using milling to displace grinding under the conditions of high speed.
Table 1 Physical properties physical properties diamond marble (calcium carbonate) density [g/cm3] 3.515 2.93 melting point[℃] 4000 1330 hardness [Gpa] 100 3~4 modulus of elasticity [Gpa] 1.04×1012 5.5×1011 Young modulus [Gpa] 1200 5GPa strength of extension [Gpa] ~3 2~4 fracture toughness [MPam1/2] ~3.4 0.1~0.7 heat conductivity [W/(cmK)] 20(300K) 2.7~3.48 coefficient of thermal expansion ×10-6/K 1.0(300K) 1.85~2.35 Analysis processing technology of the model Using UG/CAD module to create sample models, model sizes is 100mm×120mm, it’s made up of complex NURBUS surfaces, and we select marble as processing materials.
Acknowledgments This paper is supported by National "11th Five-Year" Science and Technology Plan (2006BAJ09B07), Natural science fund of Liaoning(20102186), The innovative team plans of Liaoning Provincial Department of Education(2007T146,2007T47,2008T160), Science and technology plan project of Shenyang (F10-205-1-15), Key laboratory open funded project of Liaoning province(JX-200906).
References [1] Min Zhao.Tools and techniques of stone processing.Publishing House of electronics industry,2009,8 [2] Ai-ling Wang,Liu Yong jiang.Principle and numerical control system of NC.machine press,2006,1 [3] Wang Y,Wang P.Experimental Research on Orthogonal Cutting and Oblique Cutting of Hardened Steel GCr15[J].Key Engineering Materials,2008,375:192-196.
(EI081711224290) [4] BOSHEH S S,MATIVENGA P T.White Layer Formation in Hard Turning of H13 Tool Steel at High Cutting Speeds using CBN Tooling[J].International Journal of Machine Tools&Manufacture,2006,46:225-233
Table 1 Physical properties physical properties diamond marble (calcium carbonate) density [g/cm3] 3.515 2.93 melting point[℃] 4000 1330 hardness [Gpa] 100 3~4 modulus of elasticity [Gpa] 1.04×1012 5.5×1011 Young modulus [Gpa] 1200 5GPa strength of extension [Gpa] ~3 2~4 fracture toughness [MPam1/2] ~3.4 0.1~0.7 heat conductivity [W/(cmK)] 20(300K) 2.7~3.48 coefficient of thermal expansion ×10-6/K 1.0(300K) 1.85~2.35 Analysis processing technology of the model Using UG/CAD module to create sample models, model sizes is 100mm×120mm, it’s made up of complex NURBUS surfaces, and we select marble as processing materials.
Acknowledgments This paper is supported by National "11th Five-Year" Science and Technology Plan (2006BAJ09B07), Natural science fund of Liaoning(20102186), The innovative team plans of Liaoning Provincial Department of Education(2007T146,2007T47,2008T160), Science and technology plan project of Shenyang (F10-205-1-15), Key laboratory open funded project of Liaoning province(JX-200906).
References [1] Min Zhao.Tools and techniques of stone processing.Publishing House of electronics industry,2009,8 [2] Ai-ling Wang,Liu Yong jiang.Principle and numerical control system of NC.machine press,2006,1 [3] Wang Y,Wang P.Experimental Research on Orthogonal Cutting and Oblique Cutting of Hardened Steel GCr15[J].Key Engineering Materials,2008,375:192-196.
(EI081711224290) [4] BOSHEH S S,MATIVENGA P T.White Layer Formation in Hard Turning of H13 Tool Steel at High Cutting Speeds using CBN Tooling[J].International Journal of Machine Tools&Manufacture,2006,46:225-233