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Technology development trend and foreground detection of concealed engineering were presented.
Large bridge engineering, complex structure, large scale, more concealment engineering, is hard to use normal means to monitor and control.
Some results have been applied in practical engineering.
Research and practice of intelligent sensing technologies in civil structural health monitoring in the mainland of China [7] Wang Jian, Fang Zhi.
China Civil Engineering Journal. 2008,41(1):70-81

Stress-induced magnetic signals for structural health monitoring of civil infrastructures Sheng Bao1,a, Hangfei Lou1,b and Li Lin1,c 1 Institute of Structural Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, P.R.
The piezomagnetic effect may be used as a promising method to monitor the failure process of civil infrastructures.
The piezomagnetic effect may be used as a promising method to monitor civil infrastructures.

Granulated rubber-loess mixtures showing behavior of modular variation with changing granulated rubber content, can be used as lightweight materials in civil engineering applications to sharply reduce the tire disposal problem and solve problems concerned with stress and deformation.
Exploit technical of reusing scrap tires as civil engineering materials can lighten the environment burden and reduce cost of disposal scrap tires.
Santamarina: Behavior of Rigid-Roft Rarticl Mixyures Journal of Materials in Civil Engineering (2007), ASCE, Vol. 19, No.2, (2), P. 179–184
Engineering Geology, (2006), (88), P. 110-120
D6270-98 Standard Practice for Use of Scrap Tires in Civil Engineering Applications.

Introduction Recent years there have been observed a wide application of a metalware in industrial and civil engineering [6, 13, 18, 19].
Magazine of Civil Engineering. 2011.
Resheniye odnomernykh zadach metodom konechnykh elementov [Numerical methods in civil engineering.
Magazine of Civil Engineering. 2009.
Magazine of Civil Engineering. 2010.

Diagnostics and Evaluation of Selected Concrete Vaulted Rail Bridges KOTULA Patrik1,a*, KOTEŠ Peter1,b, ODROBIŇÁK Jaroslav1,c and PROKOP Jozef1,d 1Univerity of Zilina, Faculty of Civil Engineering, Univerzitna 8215/1, 01 26 Zilina, Slovakia apatrik.kotula@uniza.sk, bpeter.kotes@uniza.sk, cjaroslav.odrobinak@uniza.sk, djozef.prokop@uniza.sk Keywords: Concrete, Arch Bridge, Diagnostics, Recalculation, Load-Carrying Capacity Abstract.
The task was solved within the cooperation of Faculty of Civil Engineering with the Railways of the Slovak Republic (ŽSR in Slovak) and the Research and Development Institute of Railways (VVÚŽ in Slovak).
University of Zilina, Civil Engineering Faculty, Department of Structures and bridges, (2021) (in Slovak)
University of Zilina, Civil Engineering Faculty, Department of Structures and bridges, (2021) (in Slovak)
University of Zilina, Civil Engineering Faculty, Department of Structures and bridges, (2021) (in Slovak)

The presented collection of the articles describes research results and engineering solutions in materials science, materials processing, civil construction, machines and equipment design, thermal engineering, power engineering, and mechatronics.
The publication will be helpful to many engineers from the industrial sector.

Steel, Alloy, Superalloy, Friction Welding, Laser Machining, Coating, Cryogenic Treatment, Mechanical Properties, Composite, Metal Matrix Composite, Concrete, Geopolymer, Structural Analysis, Seismic Analysis, Earthquake Resistant, Machine Design, Numerical Analysis, Internal Combustion Engine, Turbine Rotor Blade, Honeycomb Structure, Thermal Engineering, Fuel, Combustion Characteristics, Power Electronics, Power Engineering, Mechatronics

Analysis of Obstacle of Development and Application that Coal Gangue Used in China Road Engineering Qingqing Ma1, 2,a, Hua Liu1,b 1 Xi’an University of Architecture and Technology, Management College, Xi’an China 710055 2Xuzhou Institute of Technology,School of Civil Engineering,Xuzhou China 221000 asunnyway_25@163.com, b1617503273@qq.com Keywords: Coal gangue, Material of road engineering, Energy conservation, Influencing factors Abstract.
Britain currently has about 1.6 billion tons of coal gangue and coal gangue hill more than 800 seats, they use most of the gangue material as a common filling for dams, roads and other civil engineers.
Their technical level affects the overall engineering quality.
References [1]Zhou Jianyu:Research of application of coal gangue mixture in road engineering.
(Hebei University of Engineering,Handan2013

By the studying, the aim is to improve calculating efficiency for most of engineers and to push forward application of structural reliability theory in geotechnical engineering.
However, the traditional method can not describe and deal with various kinds of non-definitude factors which exist objectively in civil engineering, and it also can not analyze and calculate every indexes of safety and economics, and it also coordinate the contradictions between safety, economics and suiting, and do not balance with them.
And all of methods need to write so complicated program to calculation that to restrain the theory in applying of civil engineering [1-6].
By the studying, the aim is to improve calculating efficiency for most of engineers and to push forward application of structural reliability theory in geotechnical engineering.
So its applying research on these ways will push forward application of engineering optimization design based on theory of reliability in geotechnical engineering.

This article reports on the possibilities of using selected alternative materials like hemp fibres, MgO-cement, recycled concrete, fly ash and steel slag as binder or filler replacement in composite materials in civil engineering production.
Nowadays, the natural plant fibres (hemp, jute, sisal), concrete recyclate, fly ash, steel slag are used for the purposes of the construction in the civil engineering.
Conclusions This work presents the possibilities of using alternative materials (hemp fibres, MgO-cement, recycled concrete, coal fly ash and steel slag) in civil engineering.
Teo: Utilisation of Recycled Aggregate as Coarse Aggregate in Concrete in UNIMASE E-Journal of Civil Engineering, Vol. 1 (2009)
Yehia: Utilization of Recycled Coarse Aggregate in Concrete Mixes in Journal of Civil Engineering and Architecture, Vol. 5 (2011), p. 562-566

Electrochemical reaction is the basically process of steel corrosion in civil engineering, so electrochemical method is the best way to monitor corrosion grade.
Liquid state reference is often used in lab to study steel corrosion by triple electrode system, but it is very difficultly used in steel bar corrosion monitoring in civil engineering.
Steel bar corrosion monitoring is a very important part of structure health monitoring and full-life design in civil engineering [1-5].
By this way the service life which is very important for corrosion monitoring in civil engineering of ASSRE will be prolonged.
Table 1 Dissolvability of AgCl changes with excessive Cl- Excessive Cl- (mol/L) 0 3.9E-3 9.2E-3 3.6E-2 8.8E-2 0.35 0.50 Dissolvability of AgCl(mol/L) 1.3E-5 7.2E-7 9.1E-7 1.9E-6 3.6E-6 1.7E-5 2.8E-5 Conclusions A novel ASSRE has been prepared, four kinds of components and three-layer structure ensure the service life of ASSRE for corrosion monitoring in civil engineering.