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Simulating Reinforcement Corrosion-Induced Strain in Concrete using Expansive Grout


Affiliations
1 Department of Civil Engineering, and Indian Institute of Technology, Kanpur 208 016, India
2 Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur 208 016,, India
 

The present study attempts to obtain the critical strains in concrete induced on account of reinforcement corrosion by simulating the expansive pressure of corrosion products using grout. Surface strains induced in hollow concrete cylinders due to expansion of grout filled inside the hollow portion were continuously monitored to experimentally validate the well-known thick-walled uniform cylinder model used in reinforcement corrosion problems. The study shows that expansive grout could effectively simulate the internal pressure generated in accelerated corrosion tests, and can be used as a means of obtaining critical strains in relatively shorter duration in laboratory studies.

Keywords

Concrete, Corrosion, Critical Strain, Expansive Grout, Steel.
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  • Simulating Reinforcement Corrosion-Induced Strain in Concrete using Expansive Grout

Abstract Views: 436  |  PDF Views: 127

Authors

Prasanna Kumar Behera
Department of Civil Engineering, and Indian Institute of Technology, Kanpur 208 016, India
K. Mondal
Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur 208 016,, India
Sudhir Misra
Department of Civil Engineering, and Indian Institute of Technology, Kanpur 208 016, India

Abstract


The present study attempts to obtain the critical strains in concrete induced on account of reinforcement corrosion by simulating the expansive pressure of corrosion products using grout. Surface strains induced in hollow concrete cylinders due to expansion of grout filled inside the hollow portion were continuously monitored to experimentally validate the well-known thick-walled uniform cylinder model used in reinforcement corrosion problems. The study shows that expansive grout could effectively simulate the internal pressure generated in accelerated corrosion tests, and can be used as a means of obtaining critical strains in relatively shorter duration in laboratory studies.

Keywords


Concrete, Corrosion, Critical Strain, Expansive Grout, Steel.

References





DOI: https://doi.org/10.18520/cs%2Fv118%2Fi3%2F401-410