Effectiveness, concrete rehabilitation

Federal Highway Authority (USA), Cost Effective Concrete Construction and Rehabilitation in Adverse Environments, Project No. 4K, Annual Progress Report, Sept. (1981)... 

L. Bertolini, M. Gastaldi, T. Pastore, MP. Pedeferri, P. Pedeferri, Effects of galvanic coupling between carbon steel and stainless-sted reinforcement in concrete , Int. Conf. on Corrosion and Rehabilitation of Reinforced Concrete Structures, Federal Highway Administration, Orlando, 7-11 December 1998 (CD-ROM). 

C. L. Page, Interfacial effects of electrochemical protection method applied to steel in chloride containing concrete , Proc. of the Int. RILEM/CSIRO/ACRA Conference Rehabilitation of Concrete Structures,... 

The potential of the corroding surface can be monitored periodically by means of a reference electrode. One such example is the corrosion potential measurement of reinforced steel rebar in concrete structures. Corrosion of the steel in reinforced concrete is a major factor in the deterioration of highway and bridge infrastructure. A survey of the condition ofa reinforced concrete structure is the first step toward its rehabilitation. A rapid, cost-effective, and nondestructive condition survey offers key information to evaluate the corrosion, aids in quality assurance of concrete repair and rehabilitation. 

Recycling may be applied to all layers of flexible and rigid pavements. This chapter emphasises on asphalt layer recycling and, to a lesser extent, on concrete slab recycling. Recycling of the unbound or hydraulically bound materials, although possible, is effectively restricted to pavement reconstruction works, which are not as common as maintenance and rehabilitation of asphalt layers. However, provided the unbound or cement-bound materials possess the required properties, the techniques and procedures followed are similar to those as in new pavement construction. 

Page, C.L. (199Z) Interfacial effects of e]ectrt>chemica] protectit>n metht>ds applied h> steel in chloride containing concrete in Flt>, D.W.S. and Crillins, F. (eds) Rehabilitation of Concrete Structures, RILEM, Cachan, Prance. 

Electrochemical Chloride Removal and Protection of Concrete Bridge Components Laboratory Studies. Investigates the feasibility of electrochemical removal and concurrent protection as a rehabilitation option for concrete bridge structures. Chloride removal process procedures were developed, and the effects of the process on structure concrete integrity and reinforcing steel were studied. 201 pages. SHRP-S-657... 

Concrete Bridge Protection and Rehabilitation Chemical and Physical Techniques—Corrosion Inhibitors and Polymers. Discusses the improvement of existing non-electrochemical methods for protecting and rehabilitating chloride-contaminated concrete w ith and without concrete removal and the development of new methods. Five corrosion inhibitors were evaluated and service lives were estimated for the two most effective treatments. Asphalt Portland cement concrete composite (APCCC) was designed and evaluated, and compared with hot-mix asphalts and Portland cement concrete for strength properties, resistance to freeze-thaw and resistance to chloride intrusion. 248 pages. SHRP-S-666... 

The key issues affecting FRP composites in the rehabilitation and retrofitting of concrete structures have been cited by Hollaway (2011). The two primary sources of deterioration are corrosion and vehicle impact Kasan and Harries (2009) have cited and demonstrated the combination of these effects as being critical. 

The bond between the FRP and concrete has been characterized by using a variety of experimental techniques and a number of studies have been conducted to assess the effects of defects in the substrate, FRP, and the interface as well as environmental conditions prevalent during the application of the FRP. A number of studies have also been conducted using flexural specimens or peel-type tests to assess the effect of environmental exposure on the performance of the rehabilitated beams and fracture toughness, respectively. While these provide useful information regarding the effects of environmental exposure, they do not focus on the critical region of the bond between the concrete and FRP at a level that can be directly of use to the designer or used for field assessment of durability. 

The effectiveness of electrochemical chloride extraction (ECE) in rehabilitation of steel reinforcements by applying ECE to concrete structures having severe corrosion. 

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