A CALCULATION METHOD OF FLEXURAL CAPACITY OF REINFORCED CONCRETE BEAMS CORRODED BY SULFURIC ACID

NIU Ditao; CHEN Lei; LIU Xiguang

doi:10.13204/j.gyjzG19113014

Volume 50 Issue 12

Mar. 2021

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NIU Ditao, CHEN Lei, LIU Xiguang. A CALCULATION METHOD OF FLEXURAL CAPACITY OF REINFORCED CONCRETE BEAMS CORRODED BY SULFURIC ACID[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(12): 50-54,68. doi: 10.13204/j.gyjzG19113014

Citation:

NIU Ditao, CHEN Lei, LIU Xiguang. A CALCULATION METHOD OF FLEXURAL CAPACITY OF REINFORCED CONCRETE BEAMS CORRODED BY SULFURIC ACID[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(12): 50-54,68. doi: 10.13204/j.gyjzG19113014

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A CALCULATION METHOD OF FLEXURAL CAPACITY OF REINFORCED CONCRETE BEAMS CORRODED BY SULFURIC ACID

doi: 10.13204/j.gyjzG19113014

1. State Key Laboratory of Green Building in Western China, Xi'an University of Architecture & Technology, Xi'an 710055;
2. College of Civil Engineering, Xi'an University of Architecture & Technology, Xi'an 710055

Received Date: 2020-04-22
Available Online: 2021-03-31

Abstract

Abstract

In order to reasonably evaluate the residual bending capacity of existing corroded reinforced concrete beams and establish a reasonable and scientific calculation model for the flexural capacity of corroded reinforced concrete beams, considering the degradation of mechanical properties and section damage of sulfuric acid corrosion concrete, the degradation of mechanical properties of corrosion reinforcement and the influence of reinforcement strength utilization coefficient, a calculation method of flexural bearing capacity of reinforced concrete beams after sulfuric acid corrosion was proposed. Calcalated results were in good agreement with experimental ones. The results showed that with the decrease of pH value, the influence of sulfuric acid corrosion on the flexural capacity of beams increased; the higher the strength grade of concrete, the faster the bearing capacity of beams decreased; when the reinforcement was not corroded, the bearing capacity of beams decreased with the increase of the thickness of concrete corrosion layer.
- sulfuric acid corrosion,
- concrete,
- reinforced concrete beam,
- steel bar strength utilization coefficient,
- flexural capacity

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References(14)

References

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