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2025 Vol.16, Issue 3 Preview Page

General Article

Effect of water-reducing admixtures on the mechanical performance of crumb rubberized concrete
Abu Hasan1*
,
Md. Nadiruzzaman2
,
Rituparna Sarker2
,
Anik Roy Pranto2
,
Aktaruzzaman Sharif2
1Assistant Professor, Department of Civil Engineering, Daffodil International University, Savar, Dhaka-1216, Bangladesh
2Graduate Student, Department of Civil Engineering, Daffodil International University, Savar, Dhaka-1216, Bangladesh
*Corresponding Author
30 September 2025. pp. 388-401
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Abstract

The number of waste tires has been rising rapidly due to the global increase in motorized vehicles, posing a major environmental concern. Using Crumb Rubber (CR) recycled from these tires in concrete production offers a potential and sustainable solution to this issue. This study investigates the effect of substituting sand with CR at 5%, 10%, and 15% volumes, both with and without admixtures, on the mechanical properties of concrete. In total, 48 cylinders, 24 flexural beams, and 12 small-scale reinforced concrete columns were tested to assess unit weight, compressive strength, split tensile strength, flexural strength, and axial load capacity of the column. Test results indicated that CR inclusion generally reduced mechanical properties, while using admixtures significantly enhanced strength. The axial load capacity of columns increased by approximately 15% compared to NC when admixtures were used with 5% and 10% CR. In contrast, capacity declined by 6% when 15% CR was used, even with admixture. These findings suggest that combining CR with admixtures provides a promising approach to sustainable waste management and offers potential for enhancing the structural performance of Crumb Rubberized Concrete (CRC).

Keywords
crumb rubber
sustainable
admixture
waste management
structural performance
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Information
  • Publisher :Sustainable Building Research Center (ERC) Innovative Durable Building and Infrastructure Research Center
  • Publisher(Ko) :건설구조물 내구성혁신 연구센터
  • Journal Title :International Journal of Sustainable Building Technology and Urban Development
  • Volume : 16
  • No :3
  • Pages :388-401
  • Received Date : 2025-06-01
  • Accepted Date : 2025-08-06
  • DOI :https://doi.org/10.22712/susb.20250025
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