Civil, Structural, and Environmental Engineering

Mr. Ashish Sawarn

National Institute of Technology Kurukshetra
India

Abstract Title: Utilizing Crumb Rubber as a Partial Replacement for Fine Aggregate in Concrete

Biography:

I Ashish Sawarn studied Civil Engineering at the Guru Gobind Singh Indraprastha University, New Delhi, India and graduated as B-Tech in 2018. After the completion of B-Tech I decided to do teaching in Diploma Collage for 4 years. Now, from 2023 I am persuing M-Tech in Structural Engineering from National Institute of Technology (NIT), Kurukshetra, Haryana, India and going to complete in year 2025. I am doing research under the guidance of Professor of Civil Engineering Department of NIT Dr. SM Gupta.

Research Interest:

Waste tires create substantial environmental challenges for the tire industry when disposed of improperly. Crumb rubber, finely ground particles less than 4.75 mm in size derived from waste tires, has been introduced as a partial replacement for natural fine aggregates in concrete, effectively addressing the issue of tire waste management. This study evaluates the performance of concrete containing crumb rubber as a fine aggregate substitute, providing valuable insights for the design and application of crumb rubber concrete (CRC). Crumb rubber is lighter than natural fine aggregate, hydrophobic, and prone to air entrapment, which significantly reduces the workability of fresh CRC and weakens its bonding with the cementitious matrix. The review needs more focus on reduced strength and workability of crumb rubber concrete (CRC) due to its hydrophobic nature. The construction industry is facing sustainability issues due to the depletion of natural aggregates and the environmental concerns associated with waste tire disposal. Crumb rubber, produced from recycled tires, provides a sustainable alternative by partially replacing fine aggregates in concrete. This not only helps in reducing the environmental impact but also conserves natural resources. However, using crumb rubber in concrete presents challenges such as reduced strength and workability due to its lower stiffness and hydrophobic nature. This research focuses on compairing the compressive strength of M40 grade of concrete with 0.4 water cement ratio was investigated in which crumb rubber shall be used at varying percentage of 0%, 10%, 20%, 30% as a partial replacement of fine aggregate at the duration of 7 days, 14 days and 28 days. The study analyzes mechanical properties of crumb rubber concrete. Research should focus on optimizing crumb rubber recycling methods and enhancing its performance in concrete applications.

Keywords: Optimum dose of crumb rubber, Compressive strength, Weak bonding, Impact loading, Durability.