Impact of Long-Term Loading on Reinforced Concrete Beams Made with Partial Replacement of Coarse Aggregates with Recycled Aggregates from Old Concrete
This research work presents an experimental evaluation of the effect of sustained loading on reinforced concrete beams made with 50% replacement of natural coarse aggregates with aggregates from old concrete. A total of 9 RC beams were cast, 6 with natural coarse aggregates and 3 with recycled concrete aggregates. All beams were cured for 28 days in standard fashion. Among the first batch, 3 beams were used to test under short term loading till failure. An application of 50% of short-term loading followed on all beams assembled on purpose made frames. All beams were monitored for deflection, strain, and cracking. Both deflection and strain remained within limits. Crack monitoring revealed maximum crack width 0.5 mm. After six months of sustained load, beams were removed from the frames and tested in universal load testing machine with central point load till failure. The load-deflection pattern of all beams was observed to be almost similar and 22.12% higher in recycled concrete beams than all-natural aggregate beams. The results show promising use of recycled concrete aggregates in new concrete subjected to sustained loading.
B. A. Memon, “Recent Development on Use of Demolished Concrete as Coarse Aggregates”, International Journal of Emerging Technology and Innovative Engineering, Vol. 2, No. 1, pp. 1-11, 2016
S. Seara-Paz, B. Gonzalez-Fonteboa, F. Martinez-Abella, I. Gonzalez-Taboada, “Time-Dependent Behavior of Structural Concrete made with Recycled Coarse Aggregates. Creep and shrinkage”, Construction and Building Materials, Vol. 122, pp. 95-109, 2016 DOI: https://doi.org/10.1016/j.conbuildmat.2016.06.050
H. M. Muthana, “Long-Term Deflections for Normal and High Strength Reinforced Concrete Beams”, Journal of Babylon University/Engineering Scineces, Vol. 20, No. 1, 2012
S. Seara-Paz, B. Gonzalez-Fonteboa, F. Martinez-Abella, D. Carro-Lopez, “Long-Term Performance of Reinforced Concrete Beams with Recycled Coarse Aggregates”, Construction and Building Materials, Vol. 176, pp. 593-607 2018 DOI: https://doi.org/10.1016/j.conbuildmat.2018.05.069
B. Han, T. Y. Xiang, H. B. Xie, “A Bayesian Inference Framework for Predicting the Long-Term Deflection of Concrete Structures Caused by Creep and Shrinkage”, Engineering Structures, Vol. 142, pp. 46-55, 2017 DOI: https://doi.org/10.1016/j.engstruct.2017.03.055
N. Tosic, S. Marinkovic, N. Pecic, I. Ignjatovic, J. Dragas, “Long-Term Behavior of Reinforced Beams made with Natural or RecycledAggregate Concrete and High-Volume Fly Ash Concrete”, Construction and Building Materials, Vol. 176, pp. 344-358, 2018 DOI: https://doi.org/10.1016/j.conbuildmat.2018.05.002
W. P. Zhang, H. F. Zhang, X. L. Gu, W. Liu, “Structural Behavior of Corroded Reinforced Concrete Beams Under Sustained Loading”, Construction and Building Materials, Vol. 174, pp. 675-683, 2018 DOI: https://doi.org/10.1016/j.conbuildmat.2018.04.145
A. R Mari, J. M. Bairan, N. Duarte, “Long-Term Deflections in Cracked Reinforced Concrete Flexural Members”, Engineering Structures, Vol. 32, No. 3, pp. 829-842, 2010 DOI: https://doi.org/10.1016/j.engstruct.2009.12.009
A. Lapako, R. Grygo, “Long-Term Deformations of Recycled Aggregate Concrete (RAC) Beams made of Recycled Aggregates”, 10th International Conference on Modern Building Materials, Structures and Techniques, Vilnius Lithuania, May 19-21, 2010
E. Vasanelli, F. Micelli, M. A. Aiello, G. Plizzari, “Long-Term Behavior of FRC Flexural Beams under Sustained Load”, Engineering Structures, Vol. 56, pp. 1858-1867, 2013 DOI: https://doi.org/10.1016/j.engstruct.2013.07.035
S. H. Kim, K. B. Han, K. S. Kim, S. K. Park, “Stress-Strain and Deflection Relationship of RC Beam Bonded with FRPs under Sustained Load”, Composites Part B: Engineering, Vol. 40, No. 4, pp. 292-304, 2009 DOI: https://doi.org/10.1016/j.compositesb.2008.12.003
A .W. Beeby, R. H. Scott, A. E. K. Jones, “Revised Code Provisions for Long-Term Deflection Calculations”, Proceedings of the Institution of Civil Engineers, Structures & Buildings, Vol. 158, No. 1, pp. 71-75, 2005 DOI: https://doi.org/10.1680/stbu.2005.158.1.71
S. C. Kou, C. S. Poon, M. Etxeberria, “Influence of Recycled Aggregates on Long-Term Mechanical Properties and Pore Size Distribution of Concrete”, Cement and Concrete Composites, Vol. 33, No. 2, pp. 286-291, 2011 DOI: https://doi.org/10.1016/j.cemconcomp.2010.10.003
V. W. Y. Tam, D. Kotrayothar, J. Xiao, “Long-Term Deformation Behaviour of Recycled Aggregate Concrete”, Construction and Building Materials, Vol. 100, pp. 262-272, 2015 DOI: https://doi.org/10.1016/j.conbuildmat.2015.10.013
A. Domingo, C. Lazaro, F. L. Gayarre, M. A. Serrano, C. Lopez-Colina, “Long-Term Deformations by Creep and Shrinkage in RecycledAggregate Concrete”, Materials and Structures, Vol. 43, No. 8, pp. 1147–1160, 2010 DOI: https://doi.org/10.1617/s11527-009-9573-0
G. Fathifazl, A. G. Razaqpur, O. B. Isgor, A. Abbas, B. Fournier, S. Foo, “Creep and Drying Shrinkage Characteristics of Concrete Producedwith Coarse Recycled Concrete Aggregate”, Cement and Concrete Composites, Vol. 33, No. 10, pp. 1026-1037, 2011 DOI: https://doi.org/10.1016/j.cemconcomp.2011.08.004
W. C. Choi, H. D. Yun, “Long-Term Deflection and Flexural Behavior of Reinforced Concrete Beams with Recycled Aggregates”, Materials & Design, Vol. 51, pp. 742-750, 2013 DOI: https://doi.org/10.1016/j.matdes.2013.04.044
MetricsAbstract Views: 324
PDF Downloads: 140
Authors who publish with this journal agree to the following terms:
- Authors retain the copyright and grant the journal the right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after its publication in ETASR with an acknowledgement of its initial publication in this journal.