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Jabal2,c Layth Abdulrasool Alasadi3,d and Jaber Kadhim Alghurabi4,e 1Engineering Affairs, Najaf Educational, Al-Najaf, Iraq 2Civil Engineering Department, Faculty of Engineering, University of Kufa, Al-Najaf, Iraq 3Structures and Water Resources Engineering Department, Faculty of Engineering, University of Kufa, Al-Najaf, Iraq 4Faculty of Engineering, University of Kufa, Al-Najaf, Iraq amarwahkashkool@gmail.com, bwisamalmadi@hotmail.com, cqusay.alatiya@uokufa.edu.iq, dlaitha.alasadi@uokufa.edu.iq, ejaberk@uokufa.edu.iq Keywords: Polymer Modified Concrete, waste iron, iron filings, iron chips, compressive strength, flexural strength, tensile strength.
Reference to a book: [2] Sivakumar, M., “Effect of Polymer Modification on Mechanical and structural properties of concrete – an experimental investigation”, international journal of civil and structural engineering, Vol 1 No.4 2010, pp-732-740
[6] Ali,N. ,”Effect of iron filings in concrete compression and tensile strength “, international journal of recent development in engineering and technology ,volume 3 , issue 4 , October , 2014 ,ISSN -2347-6435 , p.p-121-125
[7] Ayokunle ,O .and Damilola ,A., “Use of quarry dust and iron filings in concrete production “,5th national conference in engineering technology , February , 2018 ,p.p-1-12
[11] KRIKAR,M., “Mechanical prop of concrete using iron waste as partial replacement of sand”, 4th international engineering conference on development in civil and computer engineering applications, 2018,p.p-204 -215.

Numerical simulation and design optimization research of slope ratio and platforms influence on a high rock cut slope engineering stability Lei He1,a, Yan Ren2,b, Zixia Feng1,c, Zhiwei Han1,d 1Power transformer engineering research institute, China Electric Power Research Institute, Beijing 100055; 2Beijing transportation university, Civil engineering campus, Beijing,100044 ahelei2009@epri.sgcc.com, b213121080@bjtu.edu.cn, cfengzx@epri.sgcc.com, dzhiweihan@126.com Keywords: High cut rock slope; Numerical simulation; Safety factor; Unloading platform; Slope monitoring Abstract.
The research conclusions can provide technical support for the engineering design, and reference for design and research of high-cut slope excavation engineering with similar conditions in that region.
References [1] GB 50330-2002 Technical Code for Building Slope Engineering[S].
Basic theory and engineering practice of FLAC/FLAC3D[M].
The application of FLAC3D in geological engineering[M].

Parametric modeling method for composite microstructure virtual testing Zhen Qing Wanga, Xiao Qiang Wangb, Ji Feng Zhang c and Song Zhoud College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, China a wangzhenqing@hrbeu.edu.cn, bwangxiaoqiang@hrbeu.edu.cn, c jfzhang@hrbeu.edu.cn, ddagaier@163.com Keywords: parametric modeling method; composite microstructure; virtual testing; representative volume element Abstract.
The following conclusions are obtained: (i) fiber volume fraction of the composite structure model reaches 65% by the modeling method, which meets the majority engineering demands; (ii) stress distribution feature of RVE generated by using moving-window function method coincides with general prediction.
So the size is determined as 0.4×0.4(cm×cm) which meets the requirement of engineering.

Dynamic structural analysis of large dams by Fourier SEM Tan Ping1, a, Li Nansheng2,b , Jiang Qun1,c 1School of Communication and Electronic, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi, 330013 2 Dept. of Hydraulic Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, People's Republic of China atanping1226@126.com, blinansheng@tongji.edu.cn, cjiangqun18@163.com Keywords: spectral element method(SEM), Fourier polynomials, large dams, dynamic analysis Abstract.
This paper also reveals the valuable application of SEM in complicated structural engineering.
Geotechnical Engineering for Disaster Mitigation and Rehabilitation - Proceedings of the 2nd International Conference GEDMAR08, 2008:874-879

The modal parameter identification of large engineering structures have an important sense to applied civil engineering such as health monitoring, structure damage estimate, active control (fuzzy control), etc [1].
Frequency Spatial Domain Decomposition Technique with Application to Operational Modal Analysis of Civil Engineering Structures.
Journal of Vibration Engineering. 3(1999), pp. 316~322.
Journal of Structural Engineering，ASCE，VOI.120，7 (2004), pp.I022~1031, [20]Ren, WX .and Zong, Z.H.
Output-only modal parameter identification of civil engineering structures Structural Engineering and Mechanics，Vol.17(2004), pp.429~444(In Chinese) [21]Keqing Fan, Yiqing Ni and Zanming Gao.

Evaluation indexes and grading standards are identified on the basis of engineering practice.
Chinese Journal of Rock Mechanics and Engineering, 2000, 19(3): 346–351.
Chinese Journal of Rock Mechanics and Engineering, 1999, 18(3): 303–307.
Chinese Journal of Rock Mechanics and Engineering, 2003, 22(3): 438–441.
Fuzzy mathematics application in civil and hydraulic engineering

As one important treatment approach of modern engineering, the grouting technology is applied in many engineering fields such as to civil engineering, hydraulic engineering, municipal engineering, and mining.
Especially, the groundwater makes adverse effects to the underground engineering.
There are several kinds of classification for the grouting materials in the engineering practice.
The grouting is complicated system engineering.
However, the final results need to be tested in engineering practice.

Modeling Cyclic Behavior of Reinforcing Steel: Relevance in Seismic Response Analysis of Reinforced Concrete Structures YeongAe Heo1, a , Guowei Zhang2, b , Sashi Kunnath3, c and Yan Xiao4, d 1 Department of Civil and Environmental Engineering, University of California, Davis, CA, 95616, USA 2 College of Civil Engineering, Hunan University, Changsha, China 3 University of California, Davis, USA; Visiting Professor, Hunan University, Changsha, China 4 University of Southern California, USA; Cheung Kong Scholar, Hunan University, China a yaheo@ucdavis.edu, b zhanggw3228@gmail.com, cskkunnath@ucdavis.edu, d yanxiao@usc.edu Keywords: reinforcing steel, cyclic response, low-cycle fatigue, buckling, strain hardening, diminishing yield plateau, strength degradation.
Park: Journal of Structural Engineering, ASCE, Vol. 114 (1988), pp. 1804-1826
Cooke: Journal of Structural Engineering, ASCE, 120 (1994), pp. 3178-3196
Coffin: American Society of Mechanical Engineers, Vol. 76 (1954), pp. 931-950
Mohle: Journal of Structural Engineering, ASCE (in press) [12] R.

On Building Crumb Rubber Concrete Test Sites Han Zhu 1,a 1 Civil Engineering Department, Tian-Jin University, Tian-Jin, 300072, China a hanzhuaz@yahoo.com.cn Keywords: Crumb rubber concrete; Crumb rubber; Air content; Compressive strength, Workability Abstract.
In the same month, with the help from two engineers with Rinker Materials in Arizona, P.
Senouci: Rubber-tired particles as concrete aggregate, Journal of Materials in Civil Engineering, 5(4)(1993), pp. 478-496
Bayomy: Rubberized Portland Cement Concrete, Journal of Materials in Civil Engineering, August (1999), pp. 206-213
Xiao: Engineering characterization and field evaluation for crumb rubber concrete, M.S.

Acoustical Behavior of Hybrid Composite Sandwich Panels PATINHA Sérgio1, a, CUNHA Fernando1, FANGUEIRO Raul1,b, RANA Sohel1 and PREGO Fernando2 1Fibrous Materials Research Group, School of Engineering, University of Minho, Guimarães, Portugal 2 Sociedade de Construções, Guimarães, Portugal asergiopatinha@civil.uminho.pt, brfangueiro@civil.uminho.pt Keywords: Acoustic Insulation, Sandwich Panels, Hybrid Composites.
Hollaway; “A review of the present and future utilization of FRP composites in the civil infrastructure with reference to their important in-service properties” Construction and Building Materials journal, 24 (2010) 2419–2445; [2] S.
(eds.), Laboratório Nacional de Engenharia Civil, 2007, Lisboa; [4] T.