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Steel reinforcement concrete is one of the most widely used composite materials in architectural and civil engineering.
Steel corrosion in concrete is not visible but it may cause decaying buildings or civil construction.
Introduction Steel reinforced concrete is one of the most popular materials for architects and civil engineers.

S.3, c 1 PhD Scholar, Department of Civil Engineering, NITC, Kerala, India 2 Professor, Department of Civil Engineering, NITC, Kerala, India 3 Assistant Professor, Department of Civil Engineering, NITC, Kerala, India acibyjac@gmail.com, bmpillai@nitc.ac.in, csajithas@nitc.ac.in Keywords: non-linear, vibration control Abstract.
Predicting the post-yield behaviour of civil engineering structures as well as controlling their vibrations using non-linear systems are ever challenging problems, especially when subjected to random excitations such as wind and earthquake.
Wind and earthquake are the major sources which cause this large response in civil engineering structures.
So, there is a need for the reduction in these responses for civil systems.
It is widely used in civil structures as Tuned Mass Damper (TMD) and mechanical systems as Dynamic Vibration Absorber (DVA).

Safety Evaluation of A380 Wake Turbulence Separation Jianguo Kong Department of Air Traffic Management, Civil Aviation Flight University of China, 618307, Guanghan, Sichuan,China kongjianguo2007@126.com Keywords: Wake turbulence separation, Wake turbulence risk, Safety evaluation, Safety target level Abstract: CAAC (Civil Aviation Administration of China) set a standard on A380 wake turbulence separation right after China Southern Airlines brought in Airbus A380 in 2001.This paper considers from the possibility of the latter aircraft wake turbulence influencing the preceding one, which means the wake turbulence risk, makes safety evaluation on the wake turbulence separation standard of the preceding aircraft as A380, and the latter one as heavy type, medium type and light type, based on the safety target level that ICAO (International Civil Aviation Organization) authorized.
Introduction Safety is the life of civil aviation, thus it’s very important to make safety evaluation on all sorts of control separation and wake turbulence separation [1-5].
Before A380 enters, the civil aviation aircraft was divided into three levels based on the maximum take-off weight: heavy type, medium type, light type.
By the calculation of Xu Xiaohao from TianJin civil aviation university that is more reasonable, and the air traffic management rules sets A380 wake turbulence dissipating time is 3 minutes.
Shen: Journal of Fluid Engineering. 124 (2002) 393-399

The Application of NUS Method for Concrete-covered Steel Corrosion Monitoring Michal Matysík 1, a, Kristýna Timčaková 1, b 1Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, 602 00 Brno, Czech Republic amatysik.m@fce.vutbr.cz, btimcakova.k@fce.vutbr.cz Keywords: reinforced concrete, nonlinear ultrasonic spectroscopy, steel corrosion, nondestructive testing Abstract.
The corrosion of steel elements in reinforced concrete can cause considerable damage to civil engineering structures.
One of the fields in which a wide application range of non-linear acoustic spectroscopy methods can be expected is civil engineering.
In Dynamic of Civil Engineering and Transport Structures and Wind Engineering, Applied Mechanics and Materials. 1.
In 10th International Conference of the Slovenian Society for Non-Destructive Testing: Application of Contemporary Non-Destructive Testing in Engineering.

The research results in the field of modern materials and technological processes for applications in mechanical engineering and construction are presented.
This edition will be useful and interesting for specialists in materials science and engineers-technologists from many branches of modern industrial production and civil engineering.

Economic study on sewage treatment engineering based on LCC Hong-guang Chen*, a, Chen-yang Li1,b and Dan-dan Xie2,c * Corresponding author ,College of water conservancy and civil engineering, Northeast Agricultural University, Harbin 150030,China 1 first author ,College of water conservancy and civil engineering, Northeast Agricultural University, Harbin 150030,China 2 second author ,College of water conservancy and civil engineering, Northeast Agricultural University, Harbin 150030,China achg218@126.com, bcli703@aliyun.com, cxdd0828@163.com Keywords: LCC；sewage treatment engineering；cost analysis；economy Abstract.
But, obviously only from this function is unable to control the sewage treatment engineering cost.
Countermeasures of improving the processing of engineering economy sewage Policies, rules and regulations reform.
Conclusions Sewage treatment project is a costly environmental engineering project.
Power Engineering Society Summer Meeting, 2001, IEEE, 2001(1):p.452-455

Ivanov et al., Earthquake engineering optimization of structures by economic criterion, Magazine of Civil Engineering. 8 (76) (2017) 67–83
Vlasov, Seismic design optimization considering base-isolation system, Magazine of Civil Engineering. 80 (2018) 138–150
Rutman, Pendulum seismic bearings, Design, analysis, experiment, Magazine of Civil Engineering. 27 (2012) 31-36
Structural Engineering Institute, American society of civil engineers, 2014
Ivanova, et al., Seismic input models for tuned mass damper designing, Magazine of Civil Engineering. 8 (76) (2017) 98–105

Research on Mechanical Properties and Engineering Application of Modern Timber Structure Xianyan Zhou1,a, Qian Wang1,b, Zhifeng Wang1,c, Zhongfeng Zhang1,d and Lei Cao1 1College of Civil Engineering and Mechanics, Central South University of Forestry and Technology, Changsha 410004, P.R.
Finally, an engineering application was introduced.
Introduction For a long time it has been recognized that due to the low strength, sawn wood could not be widely applied to civil engineering while new materials like glulam turning up to break the deadlock.
Larsen，Timber Engineering, J.
College of Civil Engineering of Chongqing University.

Lourenço,1e 1ISISE, Department of Civil Engineering, University of Minho, Portugal 2C-TAC, Department of Civil Engineering, University of Minho, Portugal agraca@civil.uminho.pt(corresponding author), bandreia.moure@gmail.com, c sandracunha86@gmail.com, dd1816@civil.uminho.pt, dpbl@civil.uminho.pt Keywords: FGD gypsum, cork, textile fibers, composite material, experimental analysis, compressive behavior, fracture energy Abstract.
The material is considered as a green material as the raw material are considered by-products and it is intended to be used as a building material for non-structural purposes in civil engineering construction.
Introduction At present, civil construction sector has a high impact on the energy consumption, both at the level of production of building materials and at the level of energy consumption in residential and public buildings.

Development of Plastic Zones During the Thermal Cycle of Welding Mohamad Al Ali1,a, Michal Tomko1,b and Ivo Demjan1,c 1Technical University of Košice, Faculty of Civil Engineering, Vysokoškolská 4, Košice, Slovak Republic amohamad.alali@tuke.sk, bmichal.tomko@tuke.sk, civo.demjan@tuke.sk Keywords: thermal stresses, welding process, welding stresses, local thermal effect, temperature spread, plastic strains Abstract.
This paper deals with the development of plastic zones, related to welding stresses and their effects on the member’s resistance from a Civil-engineering perspective.
This fact changes the local effect of the weld into a global stability problem which the civil engineer must take into account when designing the welding process.
Daneshjo, Size and distribution of welding stresses, Procedia Engineering 40 (2012) 2-7. http://dx.doi.org/10.1016/j.proeng.2012.07.046