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Impact of Drying on Structural Performance of Reinforced Concrete Beam with Slab
- Source :
- Materials, Vol 14, Iss 1887, p 1887 (2021), Materials, Volume 14, Issue 8
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Evaluating the performance of reinforced concrete (RC) structures during earthquakes and the resultant damage in the structures depends on an accurate load–displacement relationship. Several experimental and analytical evaluation methods for load–displacement relationships have been proposed and specified in current design standards. However, there have been few quantitative studies on the impact of drying on the yielding behavior of RC members, including evaluations of the effective stiffness of members. In this study, to investigate changes in the mechanical properties of RC beam–slab members due to drying of the concrete, cyclic loading tests are conducted on two RC beam–slab members with and without drying. It is found that the lateral structural stiffness of the specimen with drying decreased to 77% that of the specimen without drying. This is verified in the calculation of the flexural stiffness. In this calculation, it is assumed that drying shrinkage decreases the moment of inertia of the slab in tension but not in compression. Meanwhile, no difference is observed in the flexural capacity and yield displacement between the two specimens. Thus, there is no significant impact from drying shrinkage in RC beam–slab members on the lateral structural performance, while the shrinkage instead induces greater flexural cracking, which reduces the residual stresses in the specimen with drift leading to a gradual decrease in the impact of drying.
- Subjects :
- Materials science
animal structures
slab
moment-curvature relationship
0211 other engineering and technologies
020101 civil engineering
02 engineering and technology
lcsh:Technology
Article
0201 civil engineering
stiffness
Flexural strength
Residual stress
drying cracks
021105 building & construction
medicine
General Materials Science
drying
Composite material
lcsh:Microscopy
Shrinkage
lcsh:QC120-168.85
lcsh:QH201-278.5
lcsh:T
Stiffness
Flexural rigidity
Compression (physics)
reinforced concrete
shrinkage
lcsh:TA1-2040
yielding
Slab
beam
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
medicine.symptom
lcsh:Engineering (General). Civil engineering (General)
lcsh:TK1-9971
Beam (structure)
Subjects
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 14
- Issue :
- 1887
- Database :
- OpenAIRE
- Journal :
- Materials
- Accession number :
- edsair.doi.dedup.....cb89302d99339c9d8f7b194921d745e9