Marine Concrete Structures for the Future

2017 ◽  
pp. 2554-2562
Author(s):  
Tor Ole Olsen
Keyword(s):  
Concrete Structures ◽  
The Future ◽  
Marine Concrete

Numerical Modeling of Initiation and Propagation of Corrosion in Hollow Submerged Marine Concrete Structures

CORROSION ◽  
10.5006/0916 ◽  
2013 ◽  
Vol 69 (12) ◽  
pp. 1158-1170 ◽  
Author(s):  
A. Della Pergola ◽  
F. Lollini ◽  
E. Redaelli ◽  
L. Bertolini
Keyword(s):  
Numerical Modeling ◽  
Concrete Structures ◽  
Initiation And Propagation ◽  
Marine Concrete

The Crack Control of Reinforced Concrete Structures

2014 ◽  
Vol 1079-1080 ◽  
pp. 300-303
Author(s):  
Gang Wang
Keyword(s):  
Reinforced Concrete ◽  
Construction Industry ◽  
Fundamental Problem ◽  
Concrete Structures ◽  
Good Effect ◽  
Reinforced Concrete Structures ◽  
Global Integration ◽  
Crack Control ◽  
Construction Companies ◽  
The Future

With the continuous development of the level of China's political, economic and social, the construction industry also obtained great progress. At the same time, the quality problems of all kinds of building has become a very serious problem which restricting the expansion of the scale of the enterprise. Along with the global integration, exchanges between domestic and foreign construction companies are becoming more and more frequent. The quality issues is in relation to the future of the construction industry. Only to deal with this problem, we can win in the international competition of the company. In the future for a long period of time, the construction industry will have a greater impact on the national economy of our country. If we can not solve the fundamental problem restricting the development of construction industry, the development of this industry will not sustainable. There is a very serious problem In the course of engineering construction which is the crack control of reinforced concrete structures. If this problem can be solved, we can produce a relatively good effect in the development of China's construction industry.

scholarly journals Evaluation of Chloride-Ion Diffusion Characteristics of Wave Power Marine Concrete Structures

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5675
Author(s):  
Changhyuck Lim ◽  
Gyuyong Kim ◽  
Gyeongtae Kim ◽  
Bokyeong Lee ◽  
Youngduck Kim ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Atmospheric Pressure ◽  
Concrete Structures ◽  
Chloride Ion ◽  
Wave Power ◽  
Ion Diffusion ◽  
Chloride Ion Penetration ◽  
Chloride Attack ◽  
Marine Concrete ◽  
Chloride Ion Diffusion

Wave power marine concrete structures generate electrical energy using waves. They are exposed to a multi-deterioration environment because of air and hydrostatic pressure and chloride attack. In this study, the effect of air pressure repeatedly generated by water level change of wave power marine concrete structures on the chloride-ion diffusion of marine concrete was analyzed. The chloride-ion diffusion of wave power marine concrete structures was evaluated. The results show that the air chamber and bypass room, which were subjected to repetitive air pressures caused by water level changes, showed a higher water-soluble chloride-ion content compared to the generator room and docking facility, which were subjected to atmospheric pressure. Field exposure tests and indoor chloride attack tests were performed using fabricated specimens to analyze the effect of pressure on chloride-ion penetration. It was confirmed that Portland blast furnace slag had a greater inhibitory effect on chloride-ion penetration than ordinary Portland cement. The concrete specimens subjected to pressure showed increased capillary pores and micro-cracks. We devised an equation for calculating the diffusion coefficient based on measured data and estimating the diffusion coefficient for the location receiving repeated air pressure by using the diffusion coefficient of the location receiving general atmospheric pressure.

Analysis of Service Life of Surface Coated-Concrete Structures Considering Climate Change and Chloride Ingress

2020 ◽  
Vol 842 ◽  
pp. 299-305
Author(s):  
Xiao Yong Wang
Keyword(s):  
Climate Change ◽  
Service Life ◽  
Surface Coating ◽  
Concrete Structures ◽  
Parameter Analysis ◽  
Chloride Ingress ◽  
Arrhenius Law ◽  
Chloride Diffusivity ◽  
Chloride Profile ◽  
Marine Concrete

Mortar surface coating is widely used as a finishing material to extend the service life and improve chloride ingression resistance of marine concrete structures. This study proposes a model for estimating the service life of surface-coated marine concrete considering climate change. First, the increase of chloride diffusivity due to climate change is considered using Arrhenius’ law. A two-layered chloride ingress model is used to analyze chloride profile. The probability-based approach is used to find the service life of concrete structures. Second, parameter analysis is performed considering the effects of various factors on service life. The influences of thickness and chloride diffusivity of the coating and substrate concrete on service life are highlighted. The reduction of service life due to climate change is clarified based on the regression of results of parameter analysis. For marine concrete with 50 years’ service life, 6% service life reduction occurs because of climate change.

scholarly journals A Fuzzy Classification System for Evaluating the Health Condition of Marine Concrete Structures

2012 ◽  
Vol 10 (3) ◽  
pp. 95-109 ◽  
Author(s):  
Masoud Dehghani Champiri ◽  
S. Hossein Mousavizadegan ◽  
Faramarz Moodi
Keyword(s):  
Classification System ◽  
Concrete Structures ◽  
Health Condition ◽  
Fuzzy Classification ◽  
Marine Concrete ◽  
Fuzzy Classification System
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