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Harbin Institute of Technology, Harbin 150090, China 3.School of civil engineering, Qingdao Technological University, Qingdao 266033, China awangbin7039@126.com, bDongYL1965@163.com, cgaolitang@qtech.edu.cn Keywords: Fire Experiment; Four-Edge Fixed Concrete Slab; Temperature Field; Deformation; Fail Pattern Abstract: The performance of one full scale four- edge fixed reinforced concrete slab under the condition of combined effects of loading and fire was investigated.
Experimental Fire Tests of Two-Way Concrete Slabs, Fire Engineering Research Report 02/12[M].
Engineering Structures, 2004, 26(9): 1231-1247
Engineering Structures, 2007, 29(10): 2775-2791

Metamaterials has more applications in engineering, communication, information and so on.
The control of heat flow is of great significance in both civil and military fields.
New physical discovery is undoubtedly necessary for all kinds of metamaterials, and the main and new task for metamaterials is engineering application.
More and more metamaterials with different functions are emerging and will continue to penetrate into practical applications and play an important role in engineering, environment, communication, information, military and other fields.
Heat Flux Manipulation with Engineered Thermal Materials. 108

Al-Shammari2,c, Tameem Mohammed Hashim3,d, Ahmed Samir Naje1,e* 1College of Engineering, Al-Qasim Green University, Babylon, Iraq 2Department of Civil Engineering, University of Babylon, Babylon, Iraq 3Department of Building and Construction Techniques Engineering, Al-Mustaqbal University College, 51001 Hillah, Babylon, Iraq.
[2] Olaoye, R., Oluremi, J. and Ajamu, S., The Use of Fiber Waste as Complement in Concrete for a Sustainable Environment, 2nd International Conference on Engineering and Technology Research.

Technical and Contractual Trends for Micro Tunneling Projects in Romania and Bulgaria George Tsitsas1,a *, Chavdar Kolev2,b, Liliana Radoi3,c, Vlad Petrila4,d 1*GT Ground Engineering & Construction Services, Bucharest, Romania 2Associate Professor University of Transport Sofia, Bulgaria 3 Member of Bucharest Bar, Bucharest, Romania 4 GT Ground Engineering & Construction Services, Bucharest, Romania ageorge.tsitsas@gtengineering.ro, bch_kolev@abv.bg, cliliana@radoi.ro, dvlad.petrila@gtengineering.ro Keywords: Pipe-Jacking, Underground Works, Contracts, Risks Abstract.
Construction contracts in Romania including those for micro-tunneling projects are governed by the provisions of the New Civil Code that became a law in October 2011.
This allocation of risk can be promoted by an independent expert (engineer / project manager / consultant), certifying the correct execution of works, authorize payments, and supervise the fair conduct of both parties involved in the contract.
Project owners, engineers, and construction companies have to anticipate and prevent risks, justify their decisions for interventions and operations, control costs and deadlines, within the context of sustainable development.

Li, "Utilization of Waste Rubber Powder in Semi-Flexible Pavement," Key Engineering Materials, vol. 599, pp. 361-367, 2014
Koting, "Effects of Aggregate Gradation on the Physical Properties of Semiflexible Pavement," Advances in Materials Science and Engineering, vol. 2014, pp. 1-8, 2014
Memon, "Irradiated polyethylene terephthalate and fly ash based grouts for semi-flexible pavement: design and optimisation using response surface methodology," International Journal of Pavement Engineering, vol. 23, no. 8, pp. 2515-2530, 2020
[33] Nguyen Bao Quoc, "Research on semi-rigid pavement using open aggregate and improved mortar for Southern conditions," Master, Civil Engineering, Ho Chi Minh City University of Technology Ho Chi Minh City, 2016

Analysis of the Model Application of Mechanical Equipment for Hydrothermal Treatment at Biogas Plant JUNGA Petr1,a*, TRÁVNÍČEK Petr1,b, RUŽBARSKÝ Juraj2,c 1Mendel University in Brno, Faculty of Agronomy, Department of Agriculture, Food and Environmental Engineering, Zemědělská 1, 613 00 Brno, Czech Republic 2Technical University of Kosice, Faculty of Manufacturing Technologies with a seat in Presov, Bayerova 1, 080 01 Prešov, Slovak Republic ap.junga@mendelu.cz, bp.travnicek@mendelu.cz, bjuraj.ruzbarsky@tuke.sk Keywords: mechanical equipment, biogas plant, thermal hydrolysis, operational characteristics, economic characteristics.
Anaerobic digestion is a method engineered to decompose organic matter by a variety of anaerobic microorganisms under oxygen-free conditions.
The capital expenditure of the civil structures at the biogas plant is determined by means of the method of aggregated building work items (itemised budget), using a specialized software for budgeting building work BUILDpower by RTS corporation.
Font, Effects of thermal and mechanical pretreatments of secondary sludge on biogas production under thermophilic conditions, Chemical Engineering Journal 133 (2007) 335–342
Trávníček, Analysis of the model application of mechanical equipment for hydrothermal treatment, Research in Agricultural Engineering 59 (2013) 68–73.

Some applications of fractal fracture mechanics to describe the fatigue behaviour of materials Andrea Carpinteri 1, a, Andrea Spagnoli 1, b and Sabrina Vantadori 1,c 1 Department of Civil Engineering, University of Parma, Viale G.P.
It is worth remarking that the horizontal asymptote for large structural sizes, which is of great engineering significance, is also predicted by scaling laws based on the stress gradient concept (for instance, see Ref.[26]).
Weibull: A statistical theory for the strength of materials (Swedish Royal Institute for Engineering Research, Stockholm 1939)
Endo, in: Publication 1 of the European Group of Fracture, Mechanical Engineering Publications, London (1986)

Fatigue Reliability Analysis of the Stay Cables of Cable-stayed Bridge under Combined Loads of Stochastic Traffic and Wind Yan Li1,a, Dagang Lv 2,b, Hongfei Sheng 1,c 1 School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China; 2 School of Civil Engineering, Harbin Institute of Technology, Harbin, China; a liyan_2007@126.com, b ludagang@hit.edu.cn, c shenghongfei2005@163.com Key words：：：：Cable-stayed bridge; Stay cables; Wind load; Random vehicle load; Fatigue reliability Abstract: The existent studies on cable stays fatigue for the serviced cable-stayed bridge generally only considered traffic or wind load action respectively.
Structure Engineering.
Engineering Structures

Reneaux, Overview on Drag Recuction Technologies for Civil Transport Aircraft, European Congress on Computational Methods in Applied Sciences and Engineering, Barcelona, 2004
Hirt, Economical and Ecological Benefits of Process-integrated Surface Structuring, Key Engineering Materials 344 (2007) 939-946
Thome, Large area rolling of functional metallic micro structures, Production Engineering Research Development 1 (2007) 351-356
Wang, Manufacturing of Microfunctional Structures by Grinding, Production Engineering 13/1 (2006) 31-34

Acknowledgments This research is supported by the Engineering Project of Zhangjiangwan Bridge and the Connection Line.
Journal of Materials in Civil Engineering 31 (2019) 04019217
Macromolecular Materials and Engineering 304 (2018) 1800498
Composites Part B: Engineering 73 (2015) 10-15