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Online since: January 2013
Authors: Zhao Hui Sun, Tie Bin Wang, Guo Feng Yang, Zhi Song Wang
Research on Evaluation Index of Water Stability for Asphalt Mixtures
Zhaohui SUN1 Guofeng YANG1 Tiebin WANG2 Zhisong WANG3
1School of the Civil Engineering ,Shenyang Jianzhu University,China
2Liaoning Provincial Communications Department, China.
3Liaoning Provincial Highway Construction Bureau, China.
The residual stability index of immersion Marshall test was used to appraise asphalt mixture water stability in “Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering”(JTJ052-2000), the test results are rarely fail to request, and often more than 100% of the case.
Penetration index PI -0.95 -1.5~+1.0 1.2 Test scheme Asphalt mixture design are shown in Table 2 Table 2 Test scheme Particle size/Grad- ation 31.5 26.5 19 16 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 ★/% AC25 100 99.5 83.8 74.3 67.6 55.4 31.9 23.0 14.9 11.1 8.8 7.1 5.4 4.2 LAC25 100 95.9 89.3 70.7 62.7 54.7 34.9 23.4 17.3 11.7 8.2 6.4 4.8 4.3 SAC25 100 100 78.8 69.7 60.7 48.0 29.2 20.9 15.0 10.8 7.8 5.6 4.0 4.2 SUP25 100 98.8 85.5 79.9 73.1 54.7 38.9 25.4 17.2 10.8 7.2 5.6 4.6 4.2 AC20 100 100 97.5 90.0 80.0 60.0 40.0 27.0 16.4 13.0 8.3 7.1 6.2 4.4 LAC20 100 100 97.5 90.2 69.6 58.8 38.5 25.2 18.2 12.8 8.8 7.0 5.2 4.4 SAC20 100 100 100 86.1 72.9 54.8 30.0 23.5 18.4 14.5 11.4 9.0 7.0 4.0 ★——representative the asphalt-aggregate ratio. 1.2.1 Immersion Marshall test The standard Marshall specimen were made in accordance with “Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering
The technical advisor has been specially invited by China Highway Engineering Bureau of the first Co,Ltd.
[2] JTJ 052-2000 Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering People Communications Press, 2000
The residual stability index of immersion Marshall test was used to appraise asphalt mixture water stability in “Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering”(JTJ052-2000), the test results are rarely fail to request, and often more than 100% of the case.
Penetration index PI -0.95 -1.5~+1.0 1.2 Test scheme Asphalt mixture design are shown in Table 2 Table 2 Test scheme Particle size/Grad- ation 31.5 26.5 19 16 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 ★/% AC25 100 99.5 83.8 74.3 67.6 55.4 31.9 23.0 14.9 11.1 8.8 7.1 5.4 4.2 LAC25 100 95.9 89.3 70.7 62.7 54.7 34.9 23.4 17.3 11.7 8.2 6.4 4.8 4.3 SAC25 100 100 78.8 69.7 60.7 48.0 29.2 20.9 15.0 10.8 7.8 5.6 4.0 4.2 SUP25 100 98.8 85.5 79.9 73.1 54.7 38.9 25.4 17.2 10.8 7.2 5.6 4.6 4.2 AC20 100 100 97.5 90.0 80.0 60.0 40.0 27.0 16.4 13.0 8.3 7.1 6.2 4.4 LAC20 100 100 97.5 90.2 69.6 58.8 38.5 25.2 18.2 12.8 8.8 7.0 5.2 4.4 SAC20 100 100 100 86.1 72.9 54.8 30.0 23.5 18.4 14.5 11.4 9.0 7.0 4.0 ★——representative the asphalt-aggregate ratio. 1.2.1 Immersion Marshall test The standard Marshall specimen were made in accordance with “Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering
The technical advisor has been specially invited by China Highway Engineering Bureau of the first Co,Ltd.
[2] JTJ 052-2000 Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering People Communications Press, 2000
Online since: November 2011
Authors: Weng Sing Hwang, Guan Jhou Chen, Shih Hsien Liu, Jaw Min Chou
Investigation on Properties of Bentonite Type in Cold Bonded Pelletization of Flue Dust
Guan-Jhou Chen1a, Weng-Sing Hwang1a, Shih-Hsien Liu2b
and Jaw-Min Chou3c
1Department of Materials Science and Engineering, National Cheng Kung University, Tainan, Taiwan
2Iron Making Process Development Section Steel & Aluminum Research & Development Dept., China Steel
3Department of Materials Science & Engineering I-Shou University
aopp75825@yahoo.com.tw, awshwang@mail.ncku.edu.tw, b124552@mail.csc.com.tw, cjmchou@isu.edu.tw
Keywords: Cold bonded pellet, Bentonite
Abstract.
Lee, “”Metakaolin Lightweight Aggregate Concrete to Aply to The Ocean Engineering” master thesis, Department of marine environment and engineering, National Sun Yat-sen University, 2006 [8].
Lin, “Study in recycling of construction residual soil & rock by fixation” master thesis, Department of Civil Engineering, National Central University 2002
Lee, “”Metakaolin Lightweight Aggregate Concrete to Aply to The Ocean Engineering” master thesis, Department of marine environment and engineering, National Sun Yat-sen University, 2006 [8].
Lin, “Study in recycling of construction residual soil & rock by fixation” master thesis, Department of Civil Engineering, National Central University 2002
Online since: May 2012
Authors: Ke Pan, Yang Dong
Risk assessment of tailings pond based on triangular fuzzy theory
Ke Pan, Yang Dong
School of Civil and Safety Engineering, Dalian Jiaotong University, Dalian,Liaoning,China
email:parker_9@yahoo.cn
Keywords: Risk assessment; Tailings pond; Triangular fuzzy theory; Risk probability; Risk impact
Abstract.
(7) Table 1 Risk assessment index system for tailings pond Level 1 index Level 2 index weight Level 2 index fuzzy value Management index A (0.245) Management organization and personnel settings r1 0.114 (68,85.4,92.3) Safety production responsibility system r2 0.165 (68,86.1,92.3) Safety management system r3 0.054 (52,83,89.8) Establishment, drill and modify of emergency plans r4 0.296 (68,85,92.3) Implementation of safety inspection r5 0.119 (56,82.1,90.5) Management of hidden danger r6 0.212 (40,81.2,87.5) Safety input r7 0.040 (64,81.8,92) Engineering index B (0.459) Sliding ability of tailings particles r8 0.0216 (80,85.3,95) Safe height and length of deposited beach r9 0.1312 (80,86.8,95) Anti-sliding stability of both starter dam and accumulation dam slope r10 0.1307 (64,82.4,92) Ratio of slope on upstream and downstream of the
64,83.2,92) Flood protection standards, the capacity for flood and the reliability of flood draining structures of the dam r13 0.1520 (80,87.5,95) Leakage of water loss of the dam r14 0.0282 (64,80.9,92) Pipe slot transmission capacity of tailings r15 0.0223 (68,83.6,92.3) Ore pulp pump settings of tailings r16 0.0204 (80,86.6,95) Monitoring index C (0.255) Condition of monitoring the dam and slope deformation r17 0.3698 (64,83.9,92) Seepage monitoring conditions of the tailings dam r18 0.2427 (56,81.5,90.5) Dry beach monitoring of the tailings pond r19 0.1565 (68,83.2,92.3) Hydrology, meteorology monitoring conditions r20 0.0394 (68,81.3,92.3) Establishment of the on-line monitoring system r21 0.1916 (68,80.8,92.3) Environment index D (0.041) Site design for the earthquake intensity of tailings pond r22 0.1778 (80,85.2,95) Local hydrological parameters of tailings pond r23 0.0305 (56,80.4,90.5) Massif condition of tailings pond beach slope r24 0.3322 (64,82.8,92) Engineering
Such as the level 2 index “the subsidence, crack, collapse of the dam and paludification” belong to the engineering index.
Using Eq.(12), the fuzzy assessment results of the management index layer, engineering index layer, monitoring index layer and environment index layer are available: RA=(59.6,84.1,90.9), RB=(72.0,84.9,93.5), RC=(63.6,82.5,91.8), RD=(66.8,84.3,92.4).After getting the results one layer by one layer, the triangular fuzzy judging attribute value of the target layer is finally worked out: R=(66.6,84.1,92.4).
(7) Table 1 Risk assessment index system for tailings pond Level 1 index Level 2 index weight Level 2 index fuzzy value Management index A (0.245) Management organization and personnel settings r1 0.114 (68,85.4,92.3) Safety production responsibility system r2 0.165 (68,86.1,92.3) Safety management system r3 0.054 (52,83,89.8) Establishment, drill and modify of emergency plans r4 0.296 (68,85,92.3) Implementation of safety inspection r5 0.119 (56,82.1,90.5) Management of hidden danger r6 0.212 (40,81.2,87.5) Safety input r7 0.040 (64,81.8,92) Engineering index B (0.459) Sliding ability of tailings particles r8 0.0216 (80,85.3,95) Safe height and length of deposited beach r9 0.1312 (80,86.8,95) Anti-sliding stability of both starter dam and accumulation dam slope r10 0.1307 (64,82.4,92) Ratio of slope on upstream and downstream of the
64,83.2,92) Flood protection standards, the capacity for flood and the reliability of flood draining structures of the dam r13 0.1520 (80,87.5,95) Leakage of water loss of the dam r14 0.0282 (64,80.9,92) Pipe slot transmission capacity of tailings r15 0.0223 (68,83.6,92.3) Ore pulp pump settings of tailings r16 0.0204 (80,86.6,95) Monitoring index C (0.255) Condition of monitoring the dam and slope deformation r17 0.3698 (64,83.9,92) Seepage monitoring conditions of the tailings dam r18 0.2427 (56,81.5,90.5) Dry beach monitoring of the tailings pond r19 0.1565 (68,83.2,92.3) Hydrology, meteorology monitoring conditions r20 0.0394 (68,81.3,92.3) Establishment of the on-line monitoring system r21 0.1916 (68,80.8,92.3) Environment index D (0.041) Site design for the earthquake intensity of tailings pond r22 0.1778 (80,85.2,95) Local hydrological parameters of tailings pond r23 0.0305 (56,80.4,90.5) Massif condition of tailings pond beach slope r24 0.3322 (64,82.8,92) Engineering
Such as the level 2 index “the subsidence, crack, collapse of the dam and paludification” belong to the engineering index.
Using Eq.(12), the fuzzy assessment results of the management index layer, engineering index layer, monitoring index layer and environment index layer are available: RA=(59.6,84.1,90.9), RB=(72.0,84.9,93.5), RC=(63.6,82.5,91.8), RD=(66.8,84.3,92.4).After getting the results one layer by one layer, the triangular fuzzy judging attribute value of the target layer is finally worked out: R=(66.6,84.1,92.4).
Online since: July 2014
Authors: Tian Bao Wu, Xun Liu, Tai Quan Zhou
Study on Construction Bidding Management based on GA-BP Neural Networks
Tianbao Wu1, a, Xun Liu1,b and *Taiquan Zhou 1,c
1College of Environmental and Civil Engineering, Jiangnnan University, Wuxi, China
a88642158@qq.com, bliuxun@sina.com, czhoutaiquan@163.com
Keywords: construction project bidding, GA – BP artificial neural networks, the evaluation system.
As Shuai Cui noted in ‘Model for Inner Bidding File of Highway Engineering’ , though the lowest pricing method in bid evaluation saves investment and promote competition, it still has some shortcomings such as the lack of regulations matching the lowest price bid, the potential investment risks of owner's company, the increasing risk of engineering contracting resulting from the bidder[2].
Finally intelligent quote model, which can simulate the activity of thinking of engineers and give automatic evaluation, requires a large amount of information in preliminary work and cannot guarantee the accuracy of the output [3-4].Owning to their respective disadvantages, each evaluation method is not able to be widely used.
Systems Engineering-Theory Methodology Application, 2002, 11(2): 107- 115.
As Shuai Cui noted in ‘Model for Inner Bidding File of Highway Engineering’ , though the lowest pricing method in bid evaluation saves investment and promote competition, it still has some shortcomings such as the lack of regulations matching the lowest price bid, the potential investment risks of owner's company, the increasing risk of engineering contracting resulting from the bidder[2].
Finally intelligent quote model, which can simulate the activity of thinking of engineers and give automatic evaluation, requires a large amount of information in preliminary work and cannot guarantee the accuracy of the output [3-4].Owning to their respective disadvantages, each evaluation method is not able to be widely used.
Systems Engineering-Theory Methodology Application, 2002, 11(2): 107- 115.
Online since: September 2016
Authors: Zhi Yong Liu, Yuan Liang Xiong, Kun Rong Wang
Bond Behaviors between Polymer Cement Coated Steel Bar Subjected to Environmental Action and Concrete
XIONG YUANLIANG1,a; WANG KUNRONG1,b; LIU ZHIYONG1,c*
1Department of civil engineering, Yantai University, Yantai, Shandong, 264005,China
a707869471@qq.com, bwangkunrong1988@163.com, clzy1698@163.com
Keywords: polymer cement-based coating, coated steel bar, concrete, bond behavior, carbonation, chloride ingress
Abstract.
However, the epoxy coating was so easily aging and cracking in the years of engineering practice.
(b) Diagrammatic sketch (1, coated steel bar; 2, concrete) Fig. 1 Photo of pullout specimens According to “Testing Code of Concrete for Port and Waterwog Engineering ” (JTJ270-06) [14], the method of pull-out tests were used.
Technological principle, development process and application of epoxy resin coated steel bar both in china and abroad(in Chinese), Port&Waterway Engineering, 08(1999) 2
[14] Chinese norms, Testing code of concrete for port and waterwog engineering(JTJ270-98), People's Traffic Press, China, 1999
However, the epoxy coating was so easily aging and cracking in the years of engineering practice.
(b) Diagrammatic sketch (1, coated steel bar; 2, concrete) Fig. 1 Photo of pullout specimens According to “Testing Code of Concrete for Port and Waterwog Engineering ” (JTJ270-06) [14], the method of pull-out tests were used.
Technological principle, development process and application of epoxy resin coated steel bar both in china and abroad(in Chinese), Port&Waterway Engineering, 08(1999) 2
[14] Chinese norms, Testing code of concrete for port and waterwog engineering(JTJ270-98), People's Traffic Press, China, 1999
Online since: July 2008
Authors: Zai Tie Chen
Risk-based Research on Failure Mode of High-arch Concrete Dam
Zaitie Chen
1,2,a
1
Civil Engineering College, Hohai University, Nanjing 210098, China;
2
Shazhou Institute of Technology, Zhangjiagang 215600, China
a
Email:chenzaitie@yahoo.com.cn
Keywords: high-arch dams, risk analysis, failure modes, state functions
Abstract: Risk analysis can overcome the weakness of conventional safety evaluation of high-arch
dams where the random nature of the load and resistance effect are ignored and the failure mode
and failure disaster loss are not taken into account.
Besides, risk evaluation involves such disciplines and research fields as mathematics, mechanics, dam structural engineering, calamity evaluation, risk analysis, etc.
Development of theory and methods on high dam structural analysis[A] In: New Developments in Dam Engineering, edited by W.
Martin Publications/A.A.Balkema Publishers, The Netherlands (2004),in press [2] The statistical data of large dams in China on http//.www.icold-cigb.org.cn [3] Chen Zaitie,Ren Qingwen Research on high arch dam failure probability based on failure mode[J].Key Engineering Materials, , Vol.348-349, 601-604,(2007)
Key Engineering Materials , Vol.348-349,597-600,(2007).
Besides, risk evaluation involves such disciplines and research fields as mathematics, mechanics, dam structural engineering, calamity evaluation, risk analysis, etc.
Development of theory and methods on high dam structural analysis[A] In: New Developments in Dam Engineering, edited by W.
Martin Publications/A.A.Balkema Publishers, The Netherlands (2004),in press [2] The statistical data of large dams in China on http//.www.icold-cigb.org.cn [3] Chen Zaitie,Ren Qingwen Research on high arch dam failure probability based on failure mode[J].Key Engineering Materials, , Vol.348-349, 601-604,(2007)
Key Engineering Materials , Vol.348-349,597-600,(2007).
Online since: October 2009
Authors: Jin San Ju, Xiu Gen Jiang, Xin Yu Yao, Ding Min
Fracture Analysis for Stiffened Aircraft Fuselage Subjected to Blast
Jinsan Ju1, a
, Xinyu Yao1 b, , Ding Min 1,c
,*Xiugen Jiang1, d
1
Dept. of Civil Engineering, China Agricultural University, Beijing, 100083, China
a
jujinsan@tsinghua.org.cn, byaoxinyu@cau.edu.cn, cdingmin@cau.edu.cn,
d
jiangxiugen@tsinghua.org.cn
Keywords: stiffened fuselage, crack, blast load, dynamic stress intensity factor, fracture analysis.
Computer Modeling and Simulation in Engineering, Vol. 4 (1999), p. 457
Engineering Fracture Mechanics, Vol. 52(1995), p.51
Key Engineering Materials, Vol.324-325(2006), p.871
Key Engineering Materials, Vol.348-349(2007), p.705. 0 300 600 900 1200 0 0.1 0.2 0.3 Time/s S I F / M P a * m m 1 / 2 crack static Crack-0.25s Crack-0.025s 0 300 600 900 1200 0 0.005 0.01 0.015 0.02 0.025 0.03 Time/s S I F / M P a * m m 1 / 2 3/4 Bay Crack 3/4 Bay CrackStatic 1/2 Bay Crack 1/2 Bay Crack Static 1/4 Bay Crack 1/4 Bay Crack Static
Computer Modeling and Simulation in Engineering, Vol. 4 (1999), p. 457
Engineering Fracture Mechanics, Vol. 52(1995), p.51
Key Engineering Materials, Vol.324-325(2006), p.871
Key Engineering Materials, Vol.348-349(2007), p.705. 0 300 600 900 1200 0 0.1 0.2 0.3 Time/s S I F / M P a * m m 1 / 2 crack static Crack-0.25s Crack-0.025s 0 300 600 900 1200 0 0.005 0.01 0.015 0.02 0.025 0.03 Time/s S I F / M P a * m m 1 / 2 3/4 Bay Crack 3/4 Bay CrackStatic 1/2 Bay Crack 1/2 Bay Crack Static 1/4 Bay Crack 1/4 Bay Crack Static
Online since: January 2007
Authors: Ke Zhang, Ge Chang Chun
So it is widely
used to military and civil industry.
R-aremetal Materials and Engineering. 30(6), p. 401-405 (2001)(in Chinese) [2] Gm Jin-Chun, Ryu Sung-Soo, Kin Eun-Pyo, Moon In-Hyung.
Rare Metal Materials and Engineering,30(2), p. 127~130(2001) [7] Fan JingLian, Huang Baiyun, Qu Xuanhui et al.
Rare Metal Materials and Engineering, 30(3), p. 208~211(2001) [8] Sadangi R K, Me C and lish L E, Kear B H and Seegopaul P.
Powder Meta-llrugy Materials Science and Engineering. 6(3), p. 205-209 (2001) (in Chinese)
R-aremetal Materials and Engineering. 30(6), p. 401-405 (2001)(in Chinese) [2] Gm Jin-Chun, Ryu Sung-Soo, Kin Eun-Pyo, Moon In-Hyung.
Rare Metal Materials and Engineering,30(2), p. 127~130(2001) [7] Fan JingLian, Huang Baiyun, Qu Xuanhui et al.
Rare Metal Materials and Engineering, 30(3), p. 208~211(2001) [8] Sadangi R K, Me C and lish L E, Kear B H and Seegopaul P.
Powder Meta-llrugy Materials Science and Engineering. 6(3), p. 205-209 (2001) (in Chinese)
Online since: July 2013
Authors: Muhammad Hassan Khalil, Li Jie, Jia Dong Xu
Mathematical Analysis of Microwave
Tomography: The Reconstruction problem of
Malignant Tumor
Muhammad Hassan Khalil1,a, Li Jie 2,b, And Jia Dong Xu 3,c
Department of Electronics Engineering
Northwestern Polytechnical University (NPU)
127, YouYi Xi Lu, Xi’an 710072, Shaanxi, China
hassan_janjua86@yahoo.coma, 860554350 @qq.comb, jdxu@nwpu.edu.cnc
Keywords: Breast cancer detection, Microwave Imaging, Tomography configuration
Abstract.
Microwave imaging has recently proven capable of providing excellent diagnostic capabilities in several areas, including civil and industrial engineering, geophysical prospecting and biomedical engineering.
IEEE Transactions on Biomedical Engineering 49 (8), 812–822
IEEE Transactions on Biomedical Engineering 45 (12), 1470–1479
Microwave imaging has recently proven capable of providing excellent diagnostic capabilities in several areas, including civil and industrial engineering, geophysical prospecting and biomedical engineering.
IEEE Transactions on Biomedical Engineering 49 (8), 812–822
IEEE Transactions on Biomedical Engineering 45 (12), 1470–1479
Online since: July 2014
Authors: Hai Yan Zhang, Jin Wei Zhao
Method for Establishing the Project Evaluation System
Hai Yan Zhang 1, a,Jin Wei Zhao2,b
1Building And Civil Engineering College Of Inner Mongolia University Of Science And Technology,BaoTou City Inner Mongolia Autonomous Region,China
2Mintal Group Co,Ltd, BaoTou City Inner Mongolia Autonomous Region,China
aZhanghaiyan197112@163.com, bztyzhy@126.com
Keywords:Post-evaluation ;Establish indicator system;Method
Abstract.
In the establishment of the project evaluation index system in the process, we must seize the focus, clear thinking, for each of the indicators of scientific and detailed decomposition, thus ensuring the engineering evaluation of the indicators can get strict supervision, thus ensuring that the project the quality of the evaluation.
After the implementation of the project management evaluation observations: After evaluation of the implementation and management of construction projects reference conditions should be strictly engineering design ideas and the practical implementation of the feasibility report in which a reasonable comparison, find the difference, and to explore the specific causes.
The evaluation work of the aspect mainly surrounds the work of engineering item to expect certain whether science, reasonable.Whether considered various impact factor completely.
Its purpose is to investigate the implementation of the project measures how kind of scientific rationality and the related management measures how the design change rate case because of the design causes; engineering is how the status of implementation and the actual project implementation process associated with the feasibility report comprehensive comparative terms, to find out the differences, and to study the reasons for its formation and to propose an effective solution opinions.
In the establishment of the project evaluation index system in the process, we must seize the focus, clear thinking, for each of the indicators of scientific and detailed decomposition, thus ensuring the engineering evaluation of the indicators can get strict supervision, thus ensuring that the project the quality of the evaluation.
After the implementation of the project management evaluation observations: After evaluation of the implementation and management of construction projects reference conditions should be strictly engineering design ideas and the practical implementation of the feasibility report in which a reasonable comparison, find the difference, and to explore the specific causes.
The evaluation work of the aspect mainly surrounds the work of engineering item to expect certain whether science, reasonable.Whether considered various impact factor completely.
Its purpose is to investigate the implementation of the project measures how kind of scientific rationality and the related management measures how the design change rate case because of the design causes; engineering is how the status of implementation and the actual project implementation process associated with the feasibility report comprehensive comparative terms, to find out the differences, and to study the reasons for its formation and to propose an effective solution opinions.