Title:
Experimental Studies on Creep and Shrinkage Behavior of Reinforced Concrete Walls
Author(s):
M. N. Shariff and Devdas Menon
Publication:
Structural Journal
Volume:
117
Issue:
3
Appears on pages(s):
249-260
Keywords:
ambient environment; creep; reinforced concrete; reinforcement; shrinkage; walls
DOI:
10.14359/51721376
Date:
5/1/2020
Abstract:
This paper presents experimental studies on four reinforced concrete (RC) walls subject to sustained axial compressive load for 1 year under ambient environmental conditions. The reinforcement percentage and concrete strength have been varied, and their influence on the time-dependent behavior studied. It is observed that the percentage of steel, concrete grade, and age of loading have a significant influence on the time-dependent strains. The evolution
of time-dependent strain was also numerically simulated using six prediction models, in conjunction with analysis accounting for the restraining effect of steel. It is demonstrated that although these models have been empirically derived based on tests done on plain concrete cylinders, they are also applicable to large planar elements such as walls, having low volume to surface area. The ACI 209 model for creep and shrinkage is found to yield good results, when applied to RC walls.
Related References:
1. Moragaspitiya, H. P., “Interactive Axial Shortening of Columns and Walls in High Rise Buildings,” PhD thesis, Queensland University of Technology, Brisban, QLD, Australia, 2011.
2. ACI Committee 209, “Prediction of Creep, Shrinkage, and Temperature Effects in Concrete Structures (ACI 209R-92) (Reapproved 2008),” American Concrete Institute, Farmington Hills, MI, 1992, 47 pp.
3. EN 1992-1-1, “Eurocode 2: Design of Concrete Structures - Part 1-1: General Rules and Rules for Buildings,” European Committee for Standardization, Brussels, Belgium, 2007, 98 pp.
4. fib, “Model Code for Concrete Structures 2010,” Ernst & Sohn, Berlin, Germany, 2013.
5. Gardner, N. J., “Design Provisions for Shrinkage and Creep of Concrete,” The Adam Neville Symposium: Creep and Shrinkage-Structural Design Effects, SP-194, American Concrete Institute, Farmington Hills, MI, 2000, pp. 101-133.
6. Bažant, Z. P., and Baweja, S., “Creep and Shrinkage Prediction Model for Analysis and Design of Concrete Structures: Model B3,” The Adam Neville Symposium: Creep and Shrinkage-Structural Design Effects, SP-194, American Concrete Institute, Farmington Hills, MI, 2000, pp. 1-84.
7. RILEM TC 242. “RILEM Draft Recommendation: TC-242-MDC Multi-Decade Creep and Shrinkage of Concrete: Material Model and Structural Analysis,” Materials and Structures, V. 48, No. 4, 2015, pp. 753-770. doi: 10.1617/s11527-014-0485-2
8. Troxell, G. E.; Raphael, J. M.; and Davis, R. E., “Long-Time Tests on Plain and Reinforced Concrete Specimen,” ASTM Proceedings, V. 58, 1958, pp. 1101-1120.
9. Ziehl, P. H.; Cloyd, J. E.; and Kreger, M. E., “Evaluation of Minimum Longitudinal Reinforcement Requirements for Reinforced Concrete Columns,” Report No. FHWA/TX-02/1473-S, Center for Transportation Research, Austin, TX, 1998.
10. Fintel, M., and Khan, F. R., “Effects of Column Creep and Shrinkage in Tall Structures - Prediction of Inelastic Column Shortening,” ACI Journal Proceedings, V. 66, No. 12, Dec. 1969, pp. 957-967.
11. Dischinger, F., “Investigations on Resistance to Buckling, Elastic Deformation and Creep of Concrete in Arch Bridges,” Bauingenieur, V. 18, No. 39-40, 1937, pp. 595-621.
12. Keeton, J. R., “Creep and Shrinkage of Reinforced Thin-Shell Concrete,” Naval Facilities Engineering Command, Port Hueneme, CA, 1970.
13. Vinkler, M., and Vítek, J. L., “Drying and Shrinkage of Massive Concrete Wall Segments—3 Years Experiment and Analytical Observations,” Materials and Structures, V. 52, No. 2, 2019, p. 29 doi: 10.1617/s11527-019-1329-x
14. Lee, Y.; Lee, B.-Y.; Kwom, S.-H.; Kim, Y.-Y.; and Kim, J.-K., “Long-Term Behaviour of a Reinforced Concrete Wall under Compressive Stress Applied to Part of the Wall’s Entire Width,” Magazine of Concrete Research, V. 60, No. 10, 2008, pp. 759-768. doi: 10.1680/macr.2008.00090
15. Zou, D.; Liu, T.; Teng, J.; Du, C.; and Li, B., “Influence of Creep and Drying Shrinkage of Reinforced Concrete Shear Walls on the Axial Shortening of High-Rise Buildings,” Construction & Building Materials, V. 55, 2014, pp. 46-56. doi: 10.1016/j.conbuildmat.2014.01.034
16. Hansen, T. C., and Mattock, A. H., “Influence of Size and Shape of Member on the Shrinkage and Creep of Concrete,” ACI Journal Proceedings, V. 63, No. 2, Feb. 1966, pp. 267-290.
17. Samra, R. M., “Creep Model for Reinforced Concrete Columns,” ACI Structural Journal, V. 86, No. 1, Jan.-Feb. 1989, pp. 77-82.
18. ASTM C469-15 “Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression,” ASTM International, West Conshohocken, PA, 2014, 5 pp.
19. ASTM C512/C512M-15, “Standard Test Method for Creep of Concrete in Compression,” ASTM International, West Conshohocken, PA, 2015, 5 pp.
20. Shariff, M. N.; Saravanan, U.; Menon, D.; and Rajagopal, K. R., “Analysis of the ASTM C512 Spring-Loaded CREEP Frame,” Journal of Materials in Civil Engineering, V. 31, No. 10, 2019, p. 04019234 doi: 10.1061/(ASCE)MT.1943-5533.0002859
21. ACI Committee 435, “Control of Deflection in Concrete Structures (ACI 435R-95) (Reapproved 2000),” American Concrete Institute, Farmington Hills, MI, 1995, 77 pp.
22. IS 1343:2012, “Prestressed Concrete - Code of Practice,” Bureau of Indian Standards, New Delhi, India, 2012.