Nondestructive Testing Analysis of Reinforced Protective Cover Thickness

2011 ◽  
Vol 383-390 ◽  
pp. 6343-6346
Author(s):  
Ying Bo Jiang ◽  
Wei Chen
Keyword(s):  
Nondestructive Testing ◽  
Concrete Structure ◽  
Engineering Practice ◽  
Regression Equations ◽  
Testing Instrument ◽  
Protective Cover ◽  
Cover Thickness ◽  
Structure Test

The thickness of concrete protector is related to bearing resistance, endurance and fireproof property of concrete structure, The standard stipulates that structure tesand fireproof property of concrete structure, the standard stipulates that structure test must including the thickness of concrete protector. The article is trying to analyse performance and precision of KON-RBL concrete protector testing instrument, finding the regression equations, precision of KON-RBL concrete protector testing instrument, finding the regression equations, than trying to verify in engineering practice.

scholarly journals Vibration Properties of a Concrete Structure with Symmetries Used in Civil Engineering

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 656
Author(s):  
Sorin Vlase ◽  
Marin Marin ◽  
Ovidiu Deaconu
Keyword(s):  
Dynamic Analysis ◽  
Concrete Structure ◽  
Current Practice ◽  
Civil Engineering ◽  
Engineering Practice ◽  
Design Time ◽  
Vibration Properties ◽  
Reduced Costs ◽  
Constructive Simplicity ◽  
Economic Considerations

The paper aims to study a concrete structure, currently used in civil engineering, which has certain symmetries. This type of problem is common in engineering practice, especially in civil engineering. There are many reasons why structures with identical elements or certain symmetries are used in industry, related to economic considerations, shortening the design time, for constructive, simplicity, cost or logistical reasons. There are many reasons why the presence of symmetries has benefits for designers, builders, and beneficiaries. In the end, the result of these benefits materializes through short execution times and reduced costs. The paper studies the eigenvalue and eigenmode properties of vibration for components of the constructions’ structure, often encountered in current practice. The identification of such properties allows the simplification and easing of the effort necessary for the dynamic analysis of such a structure.

scholarly journals The Investigation of The Different Types of the Ground Rebar Spacers with Proposing New Design Rebar Space Mixed of Concrete Palstic

2020 ◽  
Vol 1 (1) ◽  
pp. 01-06
Author(s):  
Sevar Neamat ◽  
Mahmood Shamsborhan
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
Plastic Material ◽  
Vital Role ◽  
Concrete Cover ◽  
Cementitious Material ◽  
Advantages And Disadvantages ◽  
Different Types ◽  
Review Study ◽  
Cover Thickness

The reinforcing spacers are commonly prepared from cementitious material, plastic or metals. These spacers are prepared to provide the reinforcing steel with ensuring that the requested concrete cover thickness is attained to guard surrounded steel from corrosion. Also, they pretend a vital role in the concrete structure performance. The toughness of reinforced concrete buildings remains extremely reliant on the features of the protection of concrete to be strong with thickness. A disappointment in finding cover thickness is considered the main impact on early deterioration within the steel, whichever in chance is a chief weaken method in reinforced concrete constructions. The specified study offerings a review study on the investigation of the advantages and disadvantages of six factors in various types concerning the ground rebar spacers studies. As a result, different types of ground rebar spacers have been compared and the new rebar spacer has been designed mixed of concrete_ plastic material

Research on Durability Design of Concrete Structure under Chloride Environment

2014 ◽  
Vol 926-930 ◽  
pp. 623-626
Author(s):  
Ke Feng Zhang
Keyword(s):  
Concrete Structure ◽  
Design Theory ◽  
Design Method ◽  
Theory Model ◽  
Concrete Cover ◽  
Carbonation Depth ◽  
Durability Design ◽  
Chloride Environment ◽  
Cover Thickness ◽  
Chlorine Ion

For concrete structure durability increasingly highlight of problem, focus description has chlorine ion on concrete structure of erosion mechanism, and invaded model and effects factors, derivation out integrated consider concrete of chlorine ion combines capacity, and chlorine ion proliferation coefficient of time dependence, and concrete structure micro-defects effects and the mixed coagulation s performance of practical proliferation equation, established has for forecast concrete using life of chlorine ion proliferation theory model, made intends built structure in chlorine ion environment Xia durability design thought and design method, Perfected design theory of durability of concrete and carbonation model design based on Carbonation depth of concrete during the period, compared with the concrete cover thickness, for engineering design and revision of the specification reference.

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.

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