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Analysis and Prevention of Early Commercial Concrete Crack with Material Properties LiWei Zhang Department of Civil Engineering and Architecture of Xinxiang University Xinxiang China 453003 zlw198324@126.com Key words: commodity concrete; early cracks; cause analysis; control measures Abstract: Concrete in constant access to technology development, intensification of its early shrinkage cracks caused by problems in the early works become an urgent problem.
And on this basis, the proposed early modern concrete cracks crack control philosophy to early shrinkage of concrete cracking on the goods to instruct the control, service and engineering.
So far about the product is still early concrete shrinkage cracks academics keen to study the subject , it is urgent desire to solve engineering engineering problems .
The relative humidity of the surrounding environment of early performances, especially on the concrete shrinkage performance is great, good engineering practice reflects this .
Architectural Engineering , 2005,21 ( 5 ) : 275

Key Construction Technology of Shield Machine Passing Through the Airport Apron in Shallow Soft Soil Li Runjun1,2,a, Shan Renliang1,b, Li Runsheng2,c, Lv Jinyang1,d, Song Yongwei1,e 1School of Mechanics & civil engineering, China University of Mining & Technology, Beijing, 100083, China 2Beijing urban construction design & development group co., Limited, Beijing, 100088, China alirunjun2@sina.com, bsrl@cumtb.com.cn, c453396753@qq.com, d897616010@qq.com, e895027891@qq.com Keywords: shield machine in shallow soil, airport apron, sedimentation control, soil pressure control, deep splitting grouting Abstract.
It is a hard engineering problem for the shield machine passing through the capital airport apron in shallow soft soil.
Engineering situation Design overview.
Engineering characteristics (1)The control of ground subsidence is very strict, which leads the difficult construction.
In this engineering, the pressure of the synchronous grouting inlet was chosed 1.1 ~ 1.2 times of static soil pressure, grouting pressure≤0.28Mpa.

From the civil commotion in Tunisia on 17 Dec. 2010 to early Apr. 2011, the crude oil futures prices at the New York Mercantile Exchange and the International Petroleum Exchange (based in London) climbed by 28.2% and 38.1%, respectively, bringing a strong impact on the world’s petroleum supply [7].
The Libyan Civil War, which broke out in Feb. 2011 and involved the participation of multinational forces, was aimed at Libya’s petroleum and natural gas resources.
In the coal sector, China should make every effort to introduce internationally advanced technology with regard to coal clean utilization, such as clean coal technology, coal bed methane, coal chemical engineering and coal liquefaction.
Journal of Environmental Engineering Technology, 2001, 1(1): 63-71
Journal of Environmental Engineering Technology, 2001, 1(3): 185-196

European Journal of Environmental and Civil Engineering 1–18. https://doi.org/10.1080/19648189.2019.1647465 [9] Falliano, D., De Domenico, D., Ricciardi, G., Gugliandolo, E., 2019.
Presented at the Malaysian Technical Universities Conference on Engineering and Technology (MUCEET 2009), Kuantan, Pahang
Journal of Materials in Civil Engineering - J MATER CIVIL ENG 21. https://doi.org/10.1061/(ASCE)0899-1561(2009)21:11(631) [23] Nambiar, E.K.K., Ramamurthy, K., 2007.

Migration of cations in mortar under an electrical field controlled by a constant current density Wei-Chien Wang 1, a, Chih-Chien Liu 2, b, Chau Lee 3, c 1 Department of Civil Engineering, Chung Yuon Christian University, ChungLi 32001, Taiwan, R.O.C. 2 Department of Civil Engineering, ROC Military Acadamy, Fengshan 83059, Taiwan, R.O.C. 3 Department of Civil Engineering, National Central University, ChungLi 32001, Taiwan, R.O.C.

Dynamic Response Analysis for Intersection of Transverse Traffic Tubes and Main Tunnel in a Highly Seismic Region Linjie Chen1,2, a, Bo Liang2,b and Zhiyong Wang3,c 1Key Laboratory of Bridge-Structure Engineering Ministry of Communications, Chongqing Jiaotong University, Chongqing, 400074, China 2School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing, 400074, China 3China Railway Eryuan Engineering Group Co.Ltd, Chongqing ,400023, China aclj625@126.com, bliang_laoshi@126.com, c125825564@qq.com Key words: Highway tunnel, Transverse traffic tubes, Intersection, Highly seismic region, Dynamic response.
Dynamic Response Analysis Engineering Specifications.
This is of practical value in engineering guiding the design and construction.
Du: Chinese Journal of Geotechnical Engineering Vol. 28 (2006), p. 1070, in Chinese
Du and Q.S.Yan: Journal of Disaster Prevention and Mitigation Engineering Vol. 27 (2007), p. 38-42, in Chinese.

Numerical Analysis on Deformation of Adjacent Structures due to Metro Station Construction by Enlarging Large-diameter Shield Tunnel Deyun Ding1, 2, 3, a, Xiuren Yang1, b, Weidong Lu1, c, Weining Liu3, d and Mei Yan4, e 1Beijing Urban Engineering Design and Research Institute Co., Ltd., Beijing, 100037, China 2Post-doctoral Workstation, Beijing Urban Construction Group Co., Ltd., Beijing, 100088, China 3School of Civil Engineering, Beijing Jiaotong University, Beijing, 100044, China 4Tianjin Municipal Engineering Design and Research Institute, Tianjin, 300051, China adyding2301@163.com, byangxr@buedri.com, cwisdlu@126.com, dwnliu@bjtu.edu.cn, ebj_tmedi@163.com Keywords: Metro station, Large-diameter shield tunnel, Enlarging construction, Adjacent structures, Deformation.
In such a complex building environment, how to fast, safely and economically construct metro engineering is worthy to be studied.
There are some applications of this method in metro engineering abroad, however, currently no ones in China.
Such a large-diameter EPB shield used in metro engineering construction is the first one in China.
Geroge and Yunxin Ma: Municipal Engineering Technology Vol. 22(Supp) (2004), p. 196, in Chinese

., HsinChu 30015,Taiwan, ROC. 2Department of Computer Science and Information Engineering, National Central University, No.300, Jhongda Rd., Jhongli City, Taoyuan County 32001, Taiwan, ROC. 3Department of Civil Engineering and Engineering Informatics, Chung Hua University, No.707, Sec.2, WuFu Rd., HsinChu 30012, Taiwan, ROC. 4Nokia Siemens Networks, 11F., No.100, Sec. 3, Minsheng E.
It indicates that quality engineers may reduce huge extra costs via BPEL to manage and integrate the flow in Web Services.
Kim: Key Engineering Materials, Vol. 270-273 (2004), p. 2256-p. 2261
Feng: Key Engineering Materials, Vol. 375-376 (2008), p. 608-p. 613
Zhang: Key Engineering Materials, Vol. 381-382 (2008), p. 207-p. 210

Fig.4 Independent Engineering model Fig.5 Coupling of the engineering and geological body model and geological body.
Conclusion Through an engineering example，the paper proposes a method for 3-D modeling based on VRML,and researches the data preprocessing and data organization.
References [1] LI Mingchao. 3D Modeling and Analysis of Engineering Geological Information in Large Hydraulic and Hydroelectric Projects [D].
Tianjin:School of Civil Engineering of Tianjin University, 2006.
Enhanced NURBS modeling and visualization for large 3D geoengineering applications: An example from the Jinping first-level hydropower engineering project, China.

Read Method for LTD-2100 GPR Data Based on Matlab Jian LUOa, Zhongqiu XIEb, Wenchang HUANGc, Dagang WANGd College of Civil Engineering and Mechanics, Central South University of Forestry and Technology, Changsha, Hunan, 410004, China aluojian0730@163.com,bzqxie8@163.com, chwc99575341@163.com,dqiyuan891015@sina.com Key words: Matlab; LTD type ground penetrating radar; data format Abstract: LTD-2100 type ground penetrating radar has its own unique data storage format, and the acquisition data is stored in lte format.
With a practical engineering as an example, the application of Matlab achieved a goal to read the ground penetrating radar, create a graphical user interface (GUI) and display the GPR data on graphical user interface.
Journal of Environmental & Engineering Geophysics,2010,15(3):93-110
Chinese journal of engineering geophysics, (In Chinese),2006, 3 (5);381-385
Chinese journal of engineering geophysics, (In Chinese), 2009, 6(2):181-184