Structural behaviour of beams under simultaneous load and steel corrosion

G. Malumbela, P. Moyo, M. Alexander

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This paper presents the results of an experimental study conducted to characterize the structural behaviour of beams corroded whilst subjected to a constant sustained load. Corrosion on tensile steel bars was induced by an accelerated corrosion process using a 5% solution of NaCl and a constant impressed current. Four RC beams were tested, each with a width of 153 mm, a depth of 254 mm and a length of 3000 mm. Beams were tested whilst under self-weight, under 10% of the ultimate load and under 33% of the ultimate load. Longitudinal tensile strains and longitudinal compressive strains were monitored during the corrosion process. Measured strains were used to determine the depth of the neutral axis, the curvature and the moment of inertia of beams. The results indicate that the longitudinal strains, depth of the neutral axis and curvature depend on both the level of corrosion and the applied load whilst the moment of inertia only depends on the level of corrosion.

Original languageEnglish
Title of host publicationConcrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR
Pages253-254
Number of pages2
Publication statusPublished - 2009
Event2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2008 - Cape Town, South Africa
Duration: Nov 24 2008Nov 26 2008

Other

Other2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2008
CountrySouth Africa
CityCape Town
Period11/24/0811/26/08

Fingerprint

Steel corrosion
Corrosion
Tensile strain
Loads (forces)
Steel

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Malumbela, G., Moyo, P., & Alexander, M. (2009). Structural behaviour of beams under simultaneous load and steel corrosion. In Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR (pp. 253-254)
Malumbela, G. ; Moyo, P. ; Alexander, M. / Structural behaviour of beams under simultaneous load and steel corrosion. Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR. 2009. pp. 253-254
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Malumbela, G, Moyo, P & Alexander, M 2009, Structural behaviour of beams under simultaneous load and steel corrosion. in Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR. pp. 253-254, 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2008, Cape Town, South Africa, 11/24/08.

Structural behaviour of beams under simultaneous load and steel corrosion. / Malumbela, G.; Moyo, P.; Alexander, M.

Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR. 2009. p. 253-254.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - This paper presents the results of an experimental study conducted to characterize the structural behaviour of beams corroded whilst subjected to a constant sustained load. Corrosion on tensile steel bars was induced by an accelerated corrosion process using a 5% solution of NaCl and a constant impressed current. Four RC beams were tested, each with a width of 153 mm, a depth of 254 mm and a length of 3000 mm. Beams were tested whilst under self-weight, under 10% of the ultimate load and under 33% of the ultimate load. Longitudinal tensile strains and longitudinal compressive strains were monitored during the corrosion process. Measured strains were used to determine the depth of the neutral axis, the curvature and the moment of inertia of beams. The results indicate that the longitudinal strains, depth of the neutral axis and curvature depend on both the level of corrosion and the applied load whilst the moment of inertia only depends on the level of corrosion.

AB - This paper presents the results of an experimental study conducted to characterize the structural behaviour of beams corroded whilst subjected to a constant sustained load. Corrosion on tensile steel bars was induced by an accelerated corrosion process using a 5% solution of NaCl and a constant impressed current. Four RC beams were tested, each with a width of 153 mm, a depth of 254 mm and a length of 3000 mm. Beams were tested whilst under self-weight, under 10% of the ultimate load and under 33% of the ultimate load. Longitudinal tensile strains and longitudinal compressive strains were monitored during the corrosion process. Measured strains were used to determine the depth of the neutral axis, the curvature and the moment of inertia of beams. The results indicate that the longitudinal strains, depth of the neutral axis and curvature depend on both the level of corrosion and the applied load whilst the moment of inertia only depends on the level of corrosion.

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Malumbela G, Moyo P, Alexander M. Structural behaviour of beams under simultaneous load and steel corrosion. In Concrete Repair, Rehabilitation and Retrofitting II - Proceedings of the 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR. 2009. p. 253-254