Use of a linear continuous reference electrode to monitor the chloride-induced corrosion of steel in prestressed concrete

2013 ◽  
Vol 66 (1) ◽  
pp. 35-44 ◽  
Author(s):  
M. Ormellese ◽  
A. Brenna ◽  
L. Lazzari
Keyword(s):  
Prestressed Concrete ◽  
Reference Electrode ◽  
Chloride Induced Corrosion ◽  
Corrosion Of Steel

All-Solid-State Reference Electrode Based on Polymer Composites for Corrosion Monitoring of Steel in Concrete

2010 ◽  
Vol 163-167 ◽  
pp. 2945-2948
Author(s):  
Li Juan Kong ◽  
Tong Zhang ◽  
Guang Pin Song
Keyword(s):  
Solid State ◽  
Civil Engineering ◽  
Reference Electrode ◽  
Steel Corrosion ◽  
Steel Structures ◽  
Electrode System ◽  
Corrosion Monitoring ◽  
Steel Bar ◽  
State Reference ◽  
Corrosion Of Steel

Corrosion of steel structures has been found to be a problem Corrosion can be managed but not eliminated, so detecting corrosion will remain an issue no matter how effective corrosion prevention programs become. Electrochemical reaction is the basically process of steel corrosion in civil engineering, so electrochemical method is the best way to monitor corrosion grade. Liquid state reference is often used in lab to study steel corrosion by triple electrode system, but it is very difficultly used in steel bar corrosion monitoring in civil engineering. Firstly, liquid reference’s life is, generally speaking, very short. The steel corrosion is a very slow process, corrosion monitoring should be tens of years, so the liquid reference’s life is not long enough for corrosion monitoring; Secondly, the reference electrode’s strength have to be very high. Obviously, liquid electrode reference can not meet the requirement. In this paper, a novel all solid state reference electrode (ASSRE) has been developed. There are three layers in the electrode. Four kinds of components have been included in first and second layer. Additional AgCl powder has been used to inhibit AgCl decrease which is on the surface of Ag wire by complexing effect. There is only one kind of component in third layer. There are four steps to prepare the reference electrode: electrolyze, pre-mixed components, modelling and sintering. Finally, the potential of ASSR has been measured by SCE.

Chloride-Induced Corrosion of Steel in Cracked OPC and PPC Concretes: Experimental Study

2011 ◽  
Vol 23 (7) ◽  
pp. 1057-1066 ◽  
Author(s):  
Bhaskar Sangoju ◽  
Ravindra Gettu ◽  
B. H. Bharatkumar ◽  
M. Neelamegam
Keyword(s):  
Experimental Study ◽  
Chloride Induced Corrosion ◽  
Corrosion Of Steel

Field Damage Inspection and Static Load Test Analysis of Jiamusi Highway Prestressed Concrete Bridge in China

2010 ◽  
Vol 163-167 ◽  
pp. 1147-1156 ◽  
Author(s):  
Ali Fadhil Naser ◽  
Zong Lin Wang
Keyword(s):  
Prestressed Concrete ◽  
Steel Reinforcement ◽  
Load Test ◽  
Concrete Bridge ◽  
Bridge Structure ◽  
Static Load Test ◽  
Box Girder ◽  
Good State ◽  
Prestressed Concrete Bridge ◽  
Corrosion Of Steel

The main purpose of damage inspection of the bridge components is to ensure the safety of a bridge and to identify any maintenance, repair, or strengthening which that need to be carried out. The essential damages that occur in reinforced concrete bridge include different type of cracks, scalling and spalling of concrete, corrosion of steel reinforcement, deformation, excessive deflection, and stain. The main objectives of this study are to inspect the appearance of Jiamusi highway prestressed concrete bridge and describe all the damages in the bridge structural components, and to evaluate the structural performance of the bridge structure under dead and live loads. The field tests that are adopted in this study are the depth of concrete carbonation test, compressive strength of concrete test, corrosion of steel reinforcement test, and static load test. According to inspection of the bridge structure appearance, the overall states of bridge structure in good and there are not serious damages, but there are diagonal and longitudinal cracks in the inside web of box girder within block No.8 and 9. Expansion joints suffer from serious damage such as deformation of expansion joint rubber, dislocating, shedding, and cracking. The field test results show that the concrete of the bridge structure has not carbonation; the strength of concrete in good state; there is not corrosion in steel reinforcement; The values of load test for vertical deflection, strain, and stress are less than the theoretical values and the results of cracks observation show that there is not changing in the length of diagonal cracks in the web of box girder when the load test is applied. This indicates that the working state and carrying capacity of the bridge structure in good state.

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