Comparative Analysis of Bamboo and Steel Reinforcement in Concrete for Sustainable Low-Rise Buildings

The rapid growth of the construction industry has driven increased demand for sustainable, affordable, and eco-friendly alternatives to traditional materials like steel. While steel offers excellent strength and ductility, it has notable disadvantages such as high embodied energy, substantial carbon emissions, susceptibility to corrosion, and volatile market prices. These concerns have led researchers to explore renewable and low-carbon options, with bamboo emerging as a promising candidate. This study investigates bamboo's potential as a reinforcement material in concrete, especially for low-rise buildings. Bamboo, a renewable and fast-growing material with high tensile strength and an excellent strength-to-weight ratio, was tested in both untreated and chemically treated forms to evaluate its structural, mechanical, and durability properties in comparison to steel reinforcement. Experiments were conducted on M25 grade concrete using cubes, cylinders, and slabs reinforced with steel rods and bamboo splints. Tests measured tensile strength, bond strength, water absorption, flexural performance, and cyclic load behavior. Results showed that although steel-reinforced slabs had the highest load capacity and energy absorption, bamboo-reinforced slabs performed well, reaching up to 72% of the strength of steel-reinforced concrete and outperforming plain concrete significantly. Coatings like bitumen, epoxy, and boron-based treatments improved the bond between bamboo and concrete and reduced water absorption, thus enhancing durability. Additionally, bamboo's light weight, renewability, low embodied carbon, and cost-effectiveness make it a viable sustainable substitute for low-cost housing, disaster-resistant structures, and rural infrastructure. The research suggests that with appropriate treatment and standardization, bamboo can serve as an eco-friendly reinforcement material in low-rise buildings, helping to address environmental and economic challenges associated with steel while promoting sustainable development.