Durability of Concrete Structure Research and Development Direction

2010 ◽  
Vol 44-47 ◽  
pp. 2346-2353
Author(s):  
Lei Jiang ◽  
Ji Tao Yao ◽  
Ren Xin ◽  
Wei Li
Keyword(s):  
Research And Development ◽  
Concrete Structure ◽  
International Research ◽  
Concrete Structures ◽  
Future Research ◽  
Development Direction ◽  
The World ◽  
Four Levels ◽  
Structure Research ◽  
Durability Of Concrete

Currently, durability of concrete structures is a hot area of civil engineering. This paper reviews the background to the study of concrete and the current international research developments. Recent accomplishments in the world are summarized on four levels—environment, materials, components, structure. Finally, directions of future research are also proposed.

Security Solutions for Intelligent and Complex Systems

2020 ◽  
pp. 1232-1271
Author(s):  
Stuart Armstrong ◽  
Roman V. Yampolskiy
Keyword(s):  
Complex Systems ◽  
Research And Development ◽  
Social Engineering ◽  
Great Power ◽  
Future Research ◽  
Negative Effects ◽  
Safety Issues ◽  
The World ◽  
Particular Solution ◽  
Definition Of

Superintelligent systems are likely to present serious safety issues, since such entities would have great power to control the future according to their possibly misaligned goals or motivation systems. Oracle AIs (OAI) are confined AIs that can only answer questions and do not act in the world, represent one particular solution to this problem. However even Oracles are not particularly safe: humans are still vulnerable to traps, social engineering, or simply becoming dependent on the OAI. But OAIs are still strictly safer than general AIs, and there are many extra layers of precautions we can add on top of these. This paper begins with the definition of the OAI Confinement Problem. After analysis of existing solutions and their shortcomings, a protocol is proposed aimed at making a more secure confinement environment which might delay negative effects from a potentially unfriendly superintelligence while allowing for future research and development of superintelligent systems.

Durability in Cold Area of Prefabricated Concrete Structures

2014 ◽  
Vol 638-640 ◽  
pp. 1317-1321
Author(s):  
Ya Bo Wang ◽  
Lei Qian ◽  
Gao Feng Dou ◽  
Chuan Hao Xi ◽  
Han Ting Liu
Keyword(s):  
Failure Mechanism ◽  
Influencing Factors ◽  
Concrete Structure ◽  
Concrete Structures ◽  
Cold Regions ◽  
Factors Affecting ◽  
Cold Area ◽  
Durability Of Concrete

The factors affecting durability of concrete structures is described in This paper .It is pointed out here that is the concept of durability in prefabricated concrete structure , the influencing factors and failure mechanism in cold regions. It is proposed which are the methods and corresponding measures to enhance the durability of concrete structures.

Research on Factors Affecting Durability and Improvements for FRP Reinforced Concrete Structures

2011 ◽  
Vol 189-193 ◽  
pp. 847-852 ◽  
Author(s):  
Lei Tan ◽  
Xi Jun Liu ◽  
Ming Qiao Zhu
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
Civil Engineering ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Reinforced Concrete Structure ◽  
Factors Affecting ◽  
Related Research ◽  
Durability Of Concrete ◽  
At Home

With wide applications of FRP in civil engineering, it is necessary to study the durability of FRP reinforced concrete structure. Based on the related research both at home and abroad, the factors affecting durability of FRP reinforced concrete structures and the corresponding improvements have been put forward by analyzing the durability of concrete, FRP materials and reinforced structures, respectively.

Monitoring of Concrete Durability and Application in Qingdao Bay Bridge

2011 ◽  
Vol 90-93 ◽  
pp. 1205-1211
Author(s):  
Xin Peng Shao ◽  
Hui Ji ◽  
Bao Lin Guo ◽  
Zong Guang Sun ◽  
Jian Fei Mao
Keyword(s):  
Concrete Structure ◽  
Engineering Practice ◽  
Corrosion Mechanism ◽  
Corrosion Monitoring ◽  
Concrete Durability ◽  
Critical Data ◽  
The World ◽  
Key Factor ◽  
Main Factor ◽  
Durability Of Concrete

The life of concrete structure located in complex environment depends largely on the durability of concrete. The various environmental corrosive effects are the key factor to reduce the durability of concrete structures. The studies on corrosion mechanism and detecting/monitoring technology are carried out in the world, and achieved important results. Since the 90's of last century, corrosion monitoring system for concrete structure has been put into engineering practice in the world, and the technology has been being mature. Qingdao Bay Bridge is located in the special marine environment, so corrosion is the main factor affecting the durability of the bridge. Durability monitoring is one of important aspects of the structure health monitoring and maintenance management system of the Bay Bridge. By corrosion monitoring, the critical data of concrete durability and strength degradation of the structure can be obtained. It is very significant for understanding the evolvement law of the durability, developing anti-corrosion measures, and extending the life of the bridge.

Research and Application of Intelligent Humanoid Robot

2010 ◽  
Vol 44-47 ◽  
pp. 456-460
Author(s):  
Tong Li ◽  
Bin Hu
Keyword(s):  
Research And Development ◽  
High Speed ◽  
Humanoid Robot ◽  
Science And Technology ◽  
Future Research ◽  
The World ◽  
The Future

With the high-speed development of science and technology, the research and application of the humanoid robot receive more and more attention in the field of intelligent robot.Firstly, the important characters of the humanoid robot are introduced in this paper.Then the architecture of the human robot is analyzed and the research works around the world are overviewed.At last, the prospects for the future research and development are described.

The Durability and Damage Testing of High Performance Concrete

2013 ◽  
Vol 591 ◽  
pp. 325-328
Author(s):  
Wei Hong Li ◽  
Ying Ying Xu
Keyword(s):  
Concrete Structure ◽  
High Performance ◽  
High Performance Concrete ◽  
Concrete Structures ◽  
Construction Engineering ◽  
Engineering Structure ◽  
Main Research ◽  
Testing Technology ◽  
Concrete Damage ◽  
Durability Of Concrete

Concrete structures are widely used in engineering structure, but because of the problem of environment and material, the durability of the concrete structure appears. This paper first states the main research content of the durability of concrete structures, then introduces the main ways to improve the durability of concrete structure. Finally it summarizes several kinds of concrete damage testing technology and characteristics, and the construction engineering testing technology is prospected.

Security Solutions for Intelligent and Complex Systems

2017 ◽  
pp. 37-88
Author(s):  
Stuart Armstrong ◽  
Roman V. Yampolskiy
Keyword(s):  
Complex Systems ◽  
Research And Development ◽  
Social Engineering ◽  
Great Power ◽  
Future Research ◽  
Negative Effects ◽  
Safety Issues ◽  
The World ◽  
Particular Solution ◽  
Definition Of

Superintelligent systems are likely to present serious safety issues, since such entities would have great power to control the future according to their possibly misaligned goals or motivation systems. Oracle AIs (OAI) are confined AIs that can only answer questions and do not act in the world, represent one particular solution to this problem. However even Oracles are not particularly safe: humans are still vulnerable to traps, social engineering, or simply becoming dependent on the OAI. But OAIs are still strictly safer than general AIs, and there are many extra layers of precautions we can add on top of these. This paper begins with the definition of the OAI Confinement Problem. After analysis of existing solutions and their shortcomings, a protocol is proposed aimed at making a more secure confinement environment which might delay negative effects from a potentially unfriendly superintelligence while allowing for future research and development of superintelligent systems.

Application and Development of Green Scale Inhibitor: A Mini- Review

2019 ◽  
Vol 12 (3) ◽  
pp. 234-238
Author(s):  
Guolin Jing ◽  
Kai Guo ◽  
Zhengnan Sun ◽  
Hailin Yu ◽  
Yang Liu
Keyword(s):  
Amino Acid ◽  
Water Treatment ◽  
Research And Development ◽  
High Efficiency ◽  
Future Research ◽  
Scale Inhibitor ◽  
Polyaspartic Acid ◽  
Acid Type ◽  
Development Direction ◽  
Green Scale Inhibitors

Green scale inhibitor has the characteristics of high-efficiency, multifunctional, non-toxic and biodegradable, so it is widely used in water treatment. Some scale inhibitors such as polyaspartic acid type, polyepoxysuccinic acid type and poly Valley are reviewed in this paper. By investigating green scale inhibitors, it is proposed that the complexes of amino acid scale inhibitors and their copolymers should be the focus of future research. The development direction of new green scale inhibitors is pointed out, which provides reference and basis for the research and development of new water treatment scale inhibitors in the future.

Progress of the Durability of Concrete Structure of the Subway

2011 ◽  
Vol 250-253 ◽  
pp. 1456-1459 ◽  
Author(s):  
Min Qin Wu
Keyword(s):  
Concrete Structure ◽  
Concrete Structures ◽  
Chloride Ion ◽  
Stray Current ◽  
Environmental Characteristics ◽  
Durability Of Concrete ◽  
At Home

More problem about the corrosion of concrete structures in subway engineering at home and abroad has been reported, people have analyzed that many factors have caused the corrosion of its concrete structure according to environmental characteristics and the location, such as the stray current and chloride ion and so on.we have reviewed the current research of the corrosion of concrete structures in subway engineering concerned on stray current and chloride ion, pointing out the direction of the study of corrosion of concrete structures in subway engineering.

Study and Application of Permeability Formwork to Marine Concrete

2013 ◽  
Vol 438-439 ◽  
pp. 333-337
Author(s):  
Qi Feng ◽  
Xiao Guang Wu ◽  
Ben Dong Zhao
Keyword(s):  
Concrete Structure ◽  
Concrete Structures ◽  
Working Life ◽  
Construction Process ◽  
Marine Structures ◽  
Working Mechanism ◽  
Development History ◽  
Research Status ◽  
Marine Concrete ◽  
Durability Of Concrete

During the construction of concrete structure, laying controlled permeability formwork within the traditional formwork can effectively improve the durability of concrete for marine structures and prolong the working life of concrete structures. This paper discusses the working mechanism of controlled permeability formwork, introduces its development history and research status, summarizes the construction process and matters needing attention of controlled permeability formwork, and puts forward the problems remaining to be solved at present.

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