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Online since: May 2012
Authors: Yue Zhong Lin
On early mechanical properties of artificial sand concrete
Yuezhong LIN
Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation (Shandong University of Science and Technology) Qingdao China 266590
Jcssust0@163.com
Keywords: Artificial sand Concrete Mechanical properties
Abstract: This paper studies the early mechanical properties of artificial sand concrete, we found by comparison with natural sand concrete that the slump of artificial sand concrete were increased by 85%, and the strength 0f 16h and 1d and3d were increased by 23.4% and 20% and 11%.
Original materials Cement Landscape 42.5 Portland cement ,the main physical properties as shown in table 2.1 Table 2.1 Physical and mechanical properties of cement cement grade fineness water setting time compressive strength flexural strength Initial set Final set 3d 28d 3d 28d 42.5 5 27 150min 250min 72.66 131.25 4.78 6.95 Artificial sand As addition to the mechanisms of soil treatment with artificial sand-sand, mixed sand collectively.
Journal of Kunming University, 2001,02:36~38
Original materials Cement Landscape 42.5 Portland cement ,the main physical properties as shown in table 2.1 Table 2.1 Physical and mechanical properties of cement cement grade fineness water setting time compressive strength flexural strength Initial set Final set 3d 28d 3d 28d 42.5 5 27 150min 250min 72.66 131.25 4.78 6.95 Artificial sand As addition to the mechanisms of soil treatment with artificial sand-sand, mixed sand collectively.
Journal of Kunming University, 2001,02:36~38
Online since: February 2014
Authors: Shu Heng Liu
Study of phenyl phenol formaldehyde resin and its curing performance of aniline
LIU Shu Heng 1, a
1 Department of Chemistry and Environmental Science, Cangzhou Normal University,
Cangzhou,061000, Hebei, China
aliushuheng65@sina.com
Keywords: modified,phenol formaldehyde resin,welding.
Add in 50 grams of decompression distillation treated mixed phenyl phenolformaldehyde reactor, 15ml calcium acetate 0.57 grams, 36%, from 107~109 ˚C refluxing for2 hours, protected with nitrogen in the reaction process, mixed aniline is dissolved in 6.5m lisopropanol 17.5 grams to 2 hours, after 46 ˚C / 195mmHg vacuum distillation, the removal oflow molecular materials, filter out sediment was modified with calcium acetate, mixed phenylphenol formaldehyde resin.
[5] G.F.Baxtex and R.E.Kreibich ,Forest Products Journal,23(1973),1,17
Add in 50 grams of decompression distillation treated mixed phenyl phenolformaldehyde reactor, 15ml calcium acetate 0.57 grams, 36%, from 107~109 ˚C refluxing for2 hours, protected with nitrogen in the reaction process, mixed aniline is dissolved in 6.5m lisopropanol 17.5 grams to 2 hours, after 46 ˚C / 195mmHg vacuum distillation, the removal oflow molecular materials, filter out sediment was modified with calcium acetate, mixed phenylphenol formaldehyde resin.
[5] G.F.Baxtex and R.E.Kreibich ,Forest Products Journal,23(1973),1,17
Online since: January 2013
Authors: Yun Jung Lee, Hyun Duk Seo, Sung Su Ahn, Joong Cheol Yoon
KisBot Ⅲ: New Spherical Robot with
Wind-Driven Driving Mechanism
Hyun Duk Seo1, a, Sung Su Ahn 2,b, Joong Cheol Yoon 1,c, and Yun Jung Lee1,d
1College of IT Engineering, Kyungpook National University, Daegu, Korea
2Mechatronics Center, Daegu Mechatronics & Materials Institute, Daegu, Korea
ahyun6160@daum.net, bzecks@dmi.re.kr, cbrandyjc@naver.com, dyjlee@ee.knu.ac.kr
Keywords: Spherical Robot, Deformable Robot, Wind-Driven Robot, Rolling, Ducted fan.
Acknowledgments This work was supported by the Priority Research Centers Programs through the National Research Foundation of Korea(NRF) funded by the Korean Ministry of Education, Science and Technology(2011-0002988) References [1] R.
Vincent, Journal of Bionic Engineering(2006), Vol. 3, pp. 195-208
Acknowledgments This work was supported by the Priority Research Centers Programs through the National Research Foundation of Korea(NRF) funded by the Korean Ministry of Education, Science and Technology(2011-0002988) References [1] R.
Vincent, Journal of Bionic Engineering(2006), Vol. 3, pp. 195-208
Online since: December 2013
Authors: Ze Peng Wen
Newmark-β to solve, To obtain the vertical wheel displacement, velocity and acceleration values.
6) By the interaction force between the axle system equations vehicle force acting on the bridge node, resulting in structural dynamics equations loading bridge to measure.
7) To (16)formula into the formula(8), using the Newmark-β to solve again to give the corresponding node bridge displacement, velocity and acceleration values.
8) Repeat 4-7 for iteratively, until it meets the convergence condition is reached, the condition after the next time step into the calculation of the vehicle when the end of the bridge.
4 Numerical Solution
In order to verify the correctness of the algorithm and procedures, to take literature[4] Charpy and vehicle specific parameter as follows:
Table.1 Bridge models and vehicle model parameters
bridge parameters
Vehicle model parameters
Vehicle model uses two degrees of freedom model, shown in Figure 1. the use of finite element software Ansys, materials
Beijing, Science Press,2002:101-121
Dynamic response of highway bridges to heavy vehiclesLoads,Theory and Experimental Validation.Journal of Sound and Vibration,1994,170(1):51-78.
Beijing, Science Press,2002:101-121
Dynamic response of highway bridges to heavy vehiclesLoads,Theory and Experimental Validation.Journal of Sound and Vibration,1994,170(1):51-78.
Online since: February 2014
Authors: Zhe Ming Zhang, Chun Hsi Su, Shih I Huang
D band at 1350 cm−1 (related to defects in the structure of carbon materials), G band between 1500 and 1600 cm−1 (associated to the presence of more organized graphitic structures) [18].
We also would like to pay our gratitude to National Science Council of R.O.C. for the grant support.
Lee , C.S.Yang, H.J.Huang, S.Y.Hu, J.W.Lee, C.F.Cheng, C.C.Huang, M.K.Tsai, H.C.Kuang, Journal of Luminescence 2010;130: 1756–1759 [14] Vijayanandhini, K. and Kutty, T.R.N.
We also would like to pay our gratitude to National Science Council of R.O.C. for the grant support.
Lee , C.S.Yang, H.J.Huang, S.Y.Hu, J.W.Lee, C.F.Cheng, C.C.Huang, M.K.Tsai, H.C.Kuang, Journal of Luminescence 2010;130: 1756–1759 [14] Vijayanandhini, K. and Kutty, T.R.N.
Online since: August 2014
Authors: Ying Shen, Yun Zhao, Ming Zhu Zhu
Acknowledgements
This research was financially supported by Natural Science Foundation of Fujian Province (Award No. 2013J01129) and Program of the Education Department of Fujian Province (Award JA11030).
Zhang: CHINESE JOURNAL OF STEREOLOGY AND IMAGE ANALYSIS.
Zhang: Transactions of Materials and Heat Treatment.
Zhang: CHINESE JOURNAL OF STEREOLOGY AND IMAGE ANALYSIS.
Zhang: Transactions of Materials and Heat Treatment.