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Computational Study on Influence of Water Injection Angle to Aluminum/Water Reaction Motor Zheng Hea,Xuan Gub,Ye Gaoc College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, China a hezheng1978@163.com, b guxuan1979@sina.com, cgaoye66@126.com Keywords:Aluminum/Water Reaction Motor;Water injection angle;Phase transition;Evaporation rate;Axial injection angle;Tangential injection angle Abstract.In Aluminum/Water Reaction Motor chamber, water injection angle plays an important role on mixture of aluminum particle fuel and water droplets and can affect motor performance further.

Fire Performance of Columns Made of Normal and High Strength Concrete: A Comparative Analysis Thomas GERNAY1, a * 1The National Fund for Scientific Research FNRS, Structural Engineering Department, University of Liege, Allée de la Découverte 9, 4000 Liege, Belgium athomas.gernay@ulg.ac.be Keywords: Fire, Column, High Strength Concrete, Tall Building, Numerical Analysis, SAFIR®.
Introduction High strength concrete (HSC) finds many applications in civil engineering, in particular in tall buildings where it allows to reduce the total amount of material placed and the weight on the foundations.

Bernstad¹d, R.D.Toledo Filho¹,e 1Civil Engineering Program (PEC/COPPE), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil 2Architecture Graduate Program (PROARQ/FAU), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil *Corresponding author: e-mail: aamanda.aguiar@numats.coc.ufrj.br, bcarol.goulart@numats.coc.ufrj.br, clucas.caldas@fau.ufrj.br, danna.bernstad.saraiva@sage.coppe.ufrj.br, etoledo@coc.ufrj.br Keywords: Wood bioconcrete; LCA; Wood treatment Abstract.
Congresso de Construção Civil, Brasilia, 2020 [2] Abuelnuor, A.
Proceedings - 2017 International Conference on Communication, Control, Computing and Electronics Engineering, ICCCCEE 2017, 1–5. https://doi.org/10.1109/ICCCCEE.2017.7867680 [3] Amziane, S.; Collet, F., 2017.

Study on Dynamic Characteristic and Seismic Response of Long-Span Suspension Bridge with 1960 MPa Cable Wire Haolei Wang1, a *, Fengjie Ma2, b and Chao Zhu3, c 1College of Civil Engineering and Mechanics, Central South University of Forestry and Technology, Changsha, Hunan, China 2Guangxi Communications Planning Surveying and Designing Institute, Nanning, Guangxi, China 3 The Second Hu-men Bridge Branch of Guangdong Provincial Highway Construction Co.Ltd, Guangzhou, Guangdong, China awanghaolei1981@gmail.com, bma_fengjie@126.com, czhuchao@126.com Keywords: Suspension bridge, 1960 MPa cable wire, Dynamic characteristics, Response spectrum, Time-history analysis Abstract.
The changes of suspension bridge’s mechanics performance are crucial issues engineers focus on as the improving of strength class of cable wire.

Large Size Static Pressure Box Airflow Distribution Guodan Liu,Xinxin Wang,Xuan Wang, Feng Qi,Gang Wang , Songtao Hu Institute of Environmental&Municipal Engineering, Qingdao Technological University, Qingdao,266033, China E-mail: xinxin9882@126.com Keywords: Large size static pressure box; floor air supply systems; the way of ventilation; turbulent model; Abstract.
Static pressure box space size bigger, civil structure is complex, leading to the gas flow distribution in the complex, if processing is bad to can affect the uniformity of air supply[2].
The air distribution air conditioning system, using complex structure punching plenum ventilation engineering case is not much, at present there is no Uniform design codes and standards, and static pressure box airflow organization quality will directly affect the audience area ambient air quality and comfort, so if you can grasp accurately the static pressure and velocity distribution situation, will be to improve the air quality audience and comfort play an important role.

Département Génie des Procédés, Faculté des Sciences et de la Technologie, Abdelhamid Ibn Badis University, Bp 227 Mostaganem, Algeria. 2Mohamed Boudiaf Sciences and Technology University, 31000 Oran, Algeria. 3Riga Technical University, Faculty of Civil Engineering, Department of Water Science and Technology, Azenes 16/20-263, Riga, LV-1048, Latvia anora.noureddine27@gmail.com, bsamia.benhammadi27@gmail.com, ckarafouad@yahoo.fr, dhakim.aguedal@gmail.com, eiddouabdelkader@yahoo.fr, ftalis.juhna@rtu.lv Keywords: Pseudomonas aeruginosa, hexavalent chromium, culture broth, enzymatic reduction Abstract.
Ugwu, Mud Rotary Drilling in Southern Nigeria: Potential Adverse Effects of its By-Products on the Environment, International Journal of Water resources and Environmental Engineering. 5 (2013) 262-271

Optimizing Concrete Mix Design for Application in 3D Printing Technology for the Construction Industry Refilwe Lediga1,a, Deon Kruger1,b 1Department of Civil Engineering Science, University of Johannesburg, South Africa arefled@gmail.com, bdkruger@uj.ac.za Keywords: 3D concrete printing, optimized concrete mix design, construction industry, extruder, concrete pump, computerised gantry system Abstract.
[2] Gosselin, C., Duballet, R., Roux, P., Gaudillière, N., Dirrenberger, J. and Morel, P. (2016) ‘Large-scale 3D printing of ultra-high performance concrete – a new processing route for architects and builders’, Materials & Design, 100, pp. 102–109. doi: 10.1016/j.matdes. 2016.03.097 [3] Wu, P., Wang, J. and Wang, X. (2016) ‘A critical review of the use of 3-D printing in the construction industry’, Automation in Construction, 68, pp. 21–31. doi: 10.1016/j.autcon. 2016.04.005 [4] Buswell, R.A., Soar, R.C., Gibb, A.G.F. and Thorpe, A. (2007) ‘Freeform construction: Mega-scale rapid manufacturing for construction’, Automation in Construction, 16(2), pp. 224–231. doi: 10.1016/j.autcon.2006.05.002 [5] Khoshnevis, B., Hwang, D., Yao, K.T. and Yeh, Z. (2006) ‘Mega-scale fabrication by contour crafting’, International Journal of Industrial and Systems Engineering, 1(3), p. 301. doi: 10.1504/ijise.2006.009791 [6] Berman, B. (2012) ‘3-D printing: The new industrial revolution’,Business Horizons

Experiments and Optimization of Mix Proportions for Cement Paste Backfill Materials with Extra-Fine Unclassified Tailings HUANG MingQing1, a, LIU XiaoHui1, b*, CHENG HaiYong1, c 1School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, P.
According to in-situ backfilling engineering in China, the 28-day UCS is safe to set at 0.5 MPa.

Dynamic analysis of concrete frame structure with story-adding steel structure at the top Xianghong Sun1, a, Lieping Xie1,b and Feng Ji1,c 1School of Civil Engineering, Chang’an University, Xi’an, Shaanxi, 710061, P.R.
The damping coefficient of the reinforced concrete composite structure is 0.05, the damping coefficient of the steel structure is 0.02, and the damping coefficient is determined 0.04 according to the engineering experience value.

Experimental Study on Local Compression of Concrete-filled Glass Fiber Reinforced Gypsum Wall Panel Kaozhong Zhao1, a, Jianfeng li1,b and Feng Wang1,c 1College of Civil Engineering, Shandong Jianzhu University, Jinan250101, China a zkz@sdjzu.edu.cn, b28ljf2008@163.com, cwf0712@163.com Keywords: Concrete-filled glass fiber reinforced gypsum wall panel; Local compression; Bearing capacity; Failure mechanism; Experimental study.
The standard wall panel is 3m×12m, which can be cut according to the design in the engineering application as shown in the Figure 1.The wall panel is typical green building material product with many features, such as deadweight light, good heat preservation, economy energy resources.