Technical, Economic and Perception-Based Assessment of Plastic Paver Blocks as an Alternative to Concrete Pavers

Why It Matters

Plastic‑based pavers cut carbon‑intensive cement use and divert plastic waste, offering a financially attractive path toward greener infrastructure. Their performance and cost advantages could accelerate adoption in emerging markets facing both climate and budget pressures.

Key Takeaways

• Plastic pavers use 40% waste plastic, 60% sand
• Compressive strength 40.40 N/mm² meets M40 grade
• Water absorption 0.21% versus 4.13% for concrete
• Cost about 23.7% lower than conventional concrete pavers
• Professionals accept plastic pavers; availability and regulation hinder adoption

Pulse Analysis

The construction sector faces a dual pressure: reducing the carbon footprint of cement‑intensive pavements while diverting growing volumes of plastic waste. Traditional concrete pavers demand large quantities of Portland cement, a major source of CO₂ emissions, whereas discarded plastics often end up in landfills or oceans. The recent study from Nepal evaluates paver blocks made from 40 % recycled plastic and 60 % sand as a viable substitute. By aligning waste management with infrastructure development, such hybrid blocks promise a circular‑economy solution that could reshape sustainable roadbuilding practices. Such blocks also reduce the demand for natural sand, preserving river ecosystems.

Laboratory results show the plastic‑based pavers achieving an average compressive strength of 40.40 N/mm², satisfying the M40 grade, and a flexural strength of 6.22 N/mm²—only marginally lower than conventional concrete counterparts. More striking are the durability metrics: water absorption drops to 0.21 % and abrasion loss to 0.80 mm, far outperforming the 4.13 % absorption and 2.16 mm wear of cement pavers. Economically, the hybrid blocks cost roughly 24 % less to produce, offering contractors a cost‑effective alternative without compromising structural standards, which could accelerate adoption in budget‑sensitive projects. The lower water uptake also translates into longer service life under rainy conditions.

The perception survey of 157 construction professionals in Jhapa District revealed strong awareness and willingness to trial plastic pavers, yet respondents flagged limited supply chains and the absence of clear regulatory guidelines as barriers. Policymakers can facilitate market entry by incorporating recycled‑plastic pavers into municipal specifications and providing incentives for manufacturers. If scaled, the technology could divert millions of kilograms of plastic from waste streams while delivering cheaper, moisture‑resistant pavement, positioning emerging economies to meet both climate‑action targets and infrastructure demand. Early adopters can leverage these benefits to differentiate their projects in green‑building certifications.