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Durability Based Service Life Estimation of RC Structural Components
Deterioration/degradation of reinforced concrete (RC) structures due to corrosion is one of the major durability problems all over the world. Experience in the recent past shows that RC structures do not provide adequate resistance to the deterioration due to aggressive environments. It can be said that the long term durability of RC structures can be related to the transport properties and the chemical composition of concrete being used. Therefore, to build durable RC structures, importance has to be given to durability considerations besides strength considerations. It can be said that rebar corrosion is one of the major durability concerns and is mainly due to the entry of deteriorating agents like chlorides and carbon dioxide (CO2) through the cover concrete. Therefore, the durability performance of RC structure/structural member depends mainly on the near surface quality of concrete and adequate rebar cover thickness. So, it is always better to specify the acceptance criteria as the durability performance criteria for the as-built structure(s), besides the commonly used strength criteria. This chapter discusses on dominant rebar corrosion mechanisms, performance based specifications for long term durability and the results of a parametric study on durability based service life estimation of RC structures/components.
Durability Based Service Life Estimation of RC Structural Components
Deterioration/degradation of reinforced concrete (RC) structures due to corrosion is one of the major durability problems all over the world. Experience in the recent past shows that RC structures do not provide adequate resistance to the deterioration due to aggressive environments. It can be said that the long term durability of RC structures can be related to the transport properties and the chemical composition of concrete being used. Therefore, to build durable RC structures, importance has to be given to durability considerations besides strength considerations. It can be said that rebar corrosion is one of the major durability concerns and is mainly due to the entry of deteriorating agents like chlorides and carbon dioxide (CO2) through the cover concrete. Therefore, the durability performance of RC structure/structural member depends mainly on the near surface quality of concrete and adequate rebar cover thickness. So, it is always better to specify the acceptance criteria as the durability performance criteria for the as-built structure(s), besides the commonly used strength criteria. This chapter discusses on dominant rebar corrosion mechanisms, performance based specifications for long term durability and the results of a parametric study on durability based service life estimation of RC structures/components.
Durability Based Service Life Estimation of RC Structural Components
Springer Transactions in Civil and Environmental Engineering
Reddy, Krishna R. (editor) / Pancharathi, Rathish Kumar (editor) / Reddy, Narala Gangadhara (editor) / Arukala, Suchith Reddy (editor) / Sangoju, Bhaskar (author)
Advances in Sustainable Materials and Resilient Infrastructure ; Chapter: 21 ; 309-321
2022-03-13
13 pages
Article/Chapter (Book)
Electronic Resource
English
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