Compressive Strength of Square Short Concrete Columns reinforced with GFRP Bars produced with Recycled Demolition Aggregate
Received: 5 August 2024 | Revised: 25 August 2024 and 3 September 2024 | Accepted: 4 September 2024 | Online: 9 October 2024
Corresponding author: Omar Taha Mohammed
Abstract
This study experimentally investigated the compressive strength of short concrete columns reinforced with steel or Glass Fiber Reinforced Polymer (GFRP) bars, using normal aggregate, Recycled Demolition Aggregate (RDA), or Recycled Demolition Concrete (RDC). The study variables included the concrete aggregate type, percentage of aggregate replacement, percentage of cement replaced by Micro Silica Fume (MSF), percentage of added Super-Plasticizer (SP), and the main reinforcement material. Twenty column specimens with dimensions of 150 mm × 150 mm × 700 mm were tested, with ten of them having been reinforced using steel bars and ten using GFRP bars. The results indicated that columns with GFRP bars had higher ultimate load values than their steel-reinforced counterparts. However, the ultimate load of the columns with replaced aggregate was lower than that of the reference column with normal concrete and decreased with an increasing percentage of replaced aggregate. These findings provide insights into the potential use of recycled demolition materials and GFRP reinforcement in short concrete columns while highlighting the impact on compressive strength and ductility.
Keywords:
GFRP bars, short concrete columns, recycled demolition aggregate, recycled demolition concrete, micro silica fume, superplasticizerDownloads
References
C. Zeng, P. Cui, Z. Su, Y. Lei, and R. Chen, "Failure modes of reinforced concrete columns of buildings under debris flow impact," Landslides, vol. 12, no. 3, pp. 561–571, Jun. 2015.
M. Oad, A. H. Buller, B. A. Memon, N. A. Memon, and S. Sohu, "Flexural Stress-Strain Behavior of RC Beams made with Partial Replacement of Coarse Aggregates with Coarse Aggregates from Old Concrete: Part-2: Rich Mix," Engineering, Technology & Applied Science Research, vol. 8, no. 5, pp. 3338–3343, Oct. 2018.
M. Oad, A. H. Buller, B. A. Memon, and N. A. Memon, "Impact of Long-Term Loading on Reinforced Concrete Beams Made with Partial Replacement of Coarse Aggregates with Recycled Aggregates from Old Concrete," Engineering, Technology & Applied Science Research, vol. 9, no. 1, pp. 3818–3821, Feb. 2019.
A. Abd Elhakam, A. E. Mohamed, and E. Awad, "Influence of self-healing, mixing method and adding silica fume on mechanical properties of recycled aggregates concrete," Construction and Building Materials, vol. 35, pp. 421–427, Oct. 2012.
H. Rashid and H. Mohammed, "Flexural Behaviour of Recycled Demolition Waste Reinforced Concrete Beams," presented at the Proceedings of 2nd International Multi-Disciplinary Conference -Integrated Sciences and Technologies, Sakarya, Turkey, Turkey, 7-9 September 2021.
L. Zeng, L. Li, Z. Su, and F. Liu, "Compressive test of GFRP-recycled aggregate concrete-steel tubular long columns," Construction and Building Materials, vol. 176, pp. 295–312, Jul. 2018.
S. P. Tastani and S. J. Pantazopoulou, "Bond of GFRP Bars in Concrete: Experimental Study and Analytical Interpretation," Journal of Composites for Construction, vol. 10, no. 5, pp. 381–391, Oct. 2006.
S. Shahidan, M. A. M. Azmi, K. Kupusamy, S. S. M. Zuki, and N. Ali, "Utilizing Construction and Demolition (C&D) Waste as Recycled Aggregates (RA) in Concrete," Procedia Engineering, vol. 174, pp. 1028–1035, Jan. 2017.
R. Hegde, S. R. K, P. V. Vijaykumar, S. H, A. H. Jakathi, and S. H. Madar, "A Study on Strength Characteristics of Concrete by Replacing Coarse Aggregate by Demolished Column Waste," International Journal of Engineering Research & Technology, vol. 7, no. 6, pp. 386–395, Jun. 2018.
H. J. Mohammed and Z. S. Sabir, "Properties of Concrete Containing Recycled Demolition Aggregate," IOP Conference Series: Earth and Environmental Science, vol. 877, no. 1, Nov. 2021, Art. no. 012029.
O. S. Farhan, "Effect of Use Recycled Coarse Aggregate on the Behavior of Axially Loaded Reinforced Concrete Columns," Journal of Engineering, vol. 25, no. 10, pp. 88–107, Sep. 2019.
W.-C. Choi and H.-D. Yun, "Compressive behavior of reinforced concrete columns with recycled aggregate under uniaxial loading," Engineering Structures, vol. 41, pp. 285–293, Aug. 2012.
S. El-Gamal and O. AlShareedah, "Behavior of axially loaded low strength concrete columns reinforced with GFRP bars and spirals," Engineering Structures, vol. 216, Aug. 2020, Art. no. 110732.
U. Rafique, A. Ali, and A. Raza, "Structural behavior of GFRP reinforced recycled aggregate concrete columns with polyvinyl alcohol and polypropylene fibers," Advances in Structural Engineering, vol. 24, no. 13, pp. 3043–3056, Oct. 2021.
A. Raza and U. Rafique, "Efficiency of GFRP bars and hoops in recycled aggregate concrete columns: Experimental and numerical study," Composite Structures, vol. 255, Jan. 2021, Art. no. 112986.
J. K. Sahan and E. K. Sayhood, "Effect of recycled aggregate on behaviour of tied reinforced fibrous rectangular short columns," IOP Conference Series: Earth and Environmental Science, vol. 779, no. 1, Jun. 2021, Art. no. 012006.
A. Azizinamini, D. Darwin, R. Eligehausen, R. Pavel, and S. K. Ghosh, "Proposed Modifications to ACI 318-95 Tension Development and Lap Splice for High-Strength Concrete," ACI Structural Journal, vol. 96, no. 6, pp. 922–926.
M. S. Abdulraheem, "Effect of Fire Exposed on the Behavior of Reactive Powder Concrete Columns under Concentric Compression Loading," M.S thesis, Department of Civil Engineering, University of Babylon, Iran, 2017.
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