Long Term Impact in Reinforced Recycled Concrete Beams Under 9-Month Loading
Green concrete is an active area of research. Structural demolishing waste is a global serious problem, particularly in urban areas. This research paper presents the experimental evaluation of the effect of long term loading on reinforced green concrete beams. Three beams were cast with partial replacement of natural coarse aggregates with demolished old concrete. Three beams were cast with all-natural coarse aggregates to compare the results. The beams were mounted on purpose made frames for 9 months. Deflection, strain and cracking in beams were monitored on a daily basis. After 9 months, the beams were tested until failure in a universal load testing machine under central point load. It was observed that the proposed beams exhibited 3.55% reduction in maximum load caring capacity compared to control specimens. The obtained results show good performance of the proposed green concrete beams under 9-month long term 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
M. Oad, A. H. Buller, B. A. Memon, N. A. Memon. S. Sohu, “Flexural Stress-Strain Behavior of RC Beams made with Partial Replacement of Recyclable Concrete Aggregates, Part-2: Rich Mix”, Engineering Technology and Applied Science Research, Vol. 8, No. 5, pp. 3338-3343, 2018 DOI: https://doi.org/10.48084/etasr.2129
M. Oad, A. H. Buller, B. A. Memon, N. A. Memon, “Flexural Stress-Strain Behavior of RC Beams made with Partial Replacement of Coarse Aggregates with Coarse Aggregates from Old Concrete: Part-1 (1:2:4 Ratio)”, Engineering Technology and Applied Science Research, Vol. 8, No. 3, pp. 3048-3053, 2018 DOI: https://doi.org/10.48084/etasr.1982
N. Tosic, S. Marinkovic, N. Pecic, I. Ignjatovic, J. Dragas, “Long-Term Behavior of Reinforced Beams made with Natural or Recycled Aggregate 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
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
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
W. C. Choi, H. D. Yun, “Long-Term Deflection and Flexural Behavior of Reinforced Concrete Beams with Recycled Aggregates”, Materials and Design, Vol. 51, pp. 742-750, 2013 DOI: https://doi.org/10.1016/j.matdes.2013.04.044
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
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 & Concrete Composites, Vol. 33, No. 10, pp. 1026-1037, 2011 DOI: https://doi.org/10.1016/j.cemconcomp.2011.08.004
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
B. S. Hamad, A. H. Dawi, A. Daou, G. R. Chehab, “Studies of the Effect of Recycled Aggregates on Flexural, Shear and Bond Splitting Beam Structural Behavior”, Case Studies in Construction Materials, Vol. 9, pp. e00186, 2018 DOI: https://doi.org/10.1016/j.cscm.2018.e00186
C. Liu, Z. Y. Lv Z, C. Zhu, G. L. Bai, Y. Zhang, “Study on Calculation Method of Long-Term Deformation of RAC Beam based on Creep Adjustment Coefficient”, KSCE Journal of Civil Engineering, Vol. 23, No. 1, pp. 260–267, 2019 DOI: https://doi.org/10.1007/s12205-018-0131-6
M. Oad, B. A. Memon, “Compressive Strength of Concrete Cylinders using Coarse Aggregates from Old Concrete”, 1st National Conference on Civil Engineering, Pakistan, April 28–29, 2014
MetricsAbstract Views: 296
PDF Downloads: 146
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.