Suitability of jute fiber in the production of eco-friendly building block

Abstract

Abstract Bricks have been a construction mainstay for centuries, valued for durability, strength, fire resistance, and cost-effectiveness. However, conventional brick production poses environmental challenges, including deforestation, soil erosion, air pollution, and CO₂ emissions, which contribute to global warming. This study investigates the potential of jute fiber-reinforced building blocks as a sustainable alternative. Blocks were produced with three jute fiber ratios (0.125%, 0.25%, and 0.5%), labeled J1, J2, and J3, alongside a control (J0), using two cement-to-sand ratios, 1:6 (Mix- A) and 1:4.5 (Mix-B). Admixtures were included to enhance properties. Results showed that blocks with 0.125% jute fiber in Mix-B achieved the highest compressive strength of 22.7 MPa, representing an improvement of 4% to 20% over other mixes and meeting Grade A standards as per BDS 208:2009. Additionally, the maximum split tensile strength was 2.55 MPa for Mix-B with 0.25% jute fiber, while Mix-A achieved 1.37 MPa with 0.125% jute content, marking a 50% to 75% increase in tensile strength compared to plain mixes. Moreover, the second-lowest absorption capacities for blocks with 0.125% jute fiber were 6.65% for Mix-A and 3.45% for Mix-B, slightly higher than those of the control specimens. Lastly, cost analysis shows that the average costs of Mix-A and Mix-B are 11.5 BDT and 13 BDT, respectively, which align with the PWD market price for 1st class bricks. This research supports jute fiber-reinforced blocks as a viable, sustainable alternative in construction, offering a promising approach to reduce environmental impact. Graphical Abstract

Keywords

• Jute fiber
• Alkaline activator
• Mercerization
• Admixture
• Building block