scholarly journals Performance Degradation of Existing Coastal Reinforced Concrete Bridges and Prediction on Remaining Service Life

IARJSET ◽  
2017 ◽  
Vol 4 (6) ◽  
pp. 1-2
Author(s):  
Xinyi Chen
Keyword(s):  
Reinforced Concrete ◽  
Service Life ◽  
Performance Degradation ◽  
Concrete Bridges ◽  
Remaining Service Life ◽  
Reinforced Concrete Bridges

The Model for Predicting the Remaining Service Life of Reinforced Concrete Bridges in-Service and Applicability

2011 ◽  
Vol 90-93 ◽  
pp. 1162-1167
Author(s):  
Yi Qiang Xiang ◽  
Dong Mei Guo ◽  
Kun Cheng
Keyword(s):  
Reinforced Concrete ◽  
Service Life ◽  
Life Cycle Cost ◽  
Road Traffic ◽  
Concrete Bridges ◽  
Maintenance Cost ◽  
Future Research ◽  
Concrete Bridge ◽  
Remaining Service Life ◽  
Structural Resistance

There is a strong need in maintenance and management of bridge that analyzes and predicts remaining service life (RSL) of reinforced concrete bridge. Since structural resistance of concrete bridge is generally suffered from environment, load and material etc. factors, which are intercoupled and time-varying. Hence researchers should consider the economic development of road traffic area, environment of operational bridge, variation of load, deterioration law of materials, and maintenance cost of LCC for predicting RSL of bridge. This paper reviews recent model of predicting the remaining service life (RSL) for concrete bridge and serviceability, analyzes model characteristic and defects, and looks forward to future research from the viewpoint of structure durability, reliability and life cycle cost, respectively.

Microanalysis of Thermal-Sprayed Titanium Anodes for Cathodic Protection of Reinforced Concrete Bridges

1998 ◽  
Vol 4 (S2) ◽  
pp. 486-487
Author(s):  
W. K. Collins ◽  
S. D. Cramer ◽  
B. S. Covino ◽  
G. R. Holcomb ◽  
S. J. Bullard ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Service Life ◽  
Cathodic Protection ◽  
Inert Atmosphere ◽  
Concrete Bridges ◽  
Laboratory Studies ◽  
Oregon Coast ◽  
Reinforced Concrete Bridges ◽  
Impressed Current ◽  
Impressed Current Cathodic Protection

This paper addresses the microanalysis techniques used to characterize thermal sprayed Ti coatings on concrete surfaces as anodes in impressed current cathodic protection (ICCP) systems. Thermal sprayed Ti anodes on concrete were electrochemically aged in laboratory studies of anode performance and service life. A thermal sprayed catalyzed Ti anode was installed on the Depoe Bay Bridge on the Oregon Coast in a field demonstration of the ICCP system. Both air and N were used as the atomizing gases during the study. Thermal sprayed Ti coatings are typically applied in an inert atmosphere or vacuum using shrouds or chambers to prevent reactions with the atmosphere. This was not possible with a structure as large as a bridge.Microanalysis of Ti and N together is difficult and the effects of O add to the complexity of the analysis. The ternary Ti-O-N system has not be well studied.

The Effect of Type and Height of Piers on the Seismic Behavior of Reinforced Concrete Bridges

2019 ◽  
Vol 41 ◽  
pp. 79-87 ◽  
Author(s):  
Mohamed Cherif Djemai ◽  
Mahmoud Bensaibi ◽  
Fatma Zohra Halfaya
Keyword(s):  
Reinforced Concrete ◽  
Structural Parameters ◽  
Strong Motion ◽  
Concrete Bridges ◽  
Geometrical Parameters ◽  
Girder Bridges ◽  
Building Research Institute ◽  
Reinforced Concrete Bridges ◽  
Dynamic Analyses ◽  
Strong Motion Database

Bridges are commonly used lifelines; they play an important role in the economic activity of a city or a region and their role can be crucial in a case of a seismic event since they allow the arrival of the first aid. Reinforced concrete (RC) bridges are worldwide used type view their durability, flexibility and economical cost. In fact, their behavior under seismic loading was the aim of various studies. In the present study the effect of two structural parameters i.e. the height and the type of piers of reinforced concrete bridges on seismic response is investigated. For that reason, different multi-span continuous girder bridges models with various geometrical parameters are considered. Then, non-linear dynamic analyses are performed based on two types of piers which are: multiple columns bent and wall piers with varying heights. In this approach, a serie of 40 ground motions records varying from weak to strong events selected from Building Research Institute (BRI) strong motion database are used including uncertainty in the soil and seismic characteristics. Modelling results put most emphasis on the modal periods and responses of the top pier displacements, they show the influence of the considered parameters on the behavior of such structures and their impact on the strength of reinforced concrete bridges.

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