PROS AND CONS OF RUBBERIZED ASPHALT ROADS

PROS AND CONS OF RUBBERIZED ASPHALT ROADS Rubberized asphalt roads (RARs) are increasingly gaining attention as an innovative and sustainable solution for road construction. By incorporating recycled tire powders into asphalt mixtures, RARs offer significant benefits. However, like any technological advancement, there are challenges to consider. The Environmental Upside One of the most notable advantages of RARs is their positive environmental impact. By recycling used rubber tires, we reduce the number of tires that end up in landfills. Considering that tires can take hundreds of years to decompose, this form of recycling is a meaningful step toward waste management. In addition to waste reduction, using rubberized asphalt also mitigates the environmental damage caused by mining limestone for cement. Cement production contributes significantly to carbon emissions, whereas RARs minimize the reliance on virgin materials. Addressing the Microplastics Concern On the downside, the friction between tires and RAR surfaces generates microplastics, which can escape into the environment. However, it is important to acknowledge that microplastic pollution from tires is already a problem, even on conventional asphalt roads. RARs may not necessarily exacerbate this issue beyond what already exists. Some may argue that microplastics are a persistent issue caused by numerous sources, including textiles and single-use plastics. Tackling microplastics requires a comprehensive approach, and road surface materials are just one factor to consider. Mosquito Control and Public Health Unused tires left in landfills or discarded improperly create ideal breeding grounds for mosquitoes, leading to the spread of diseases like dengue. By repurposing these tires for RARs, we not only reduce landfill waste but also mitigate the risk of mosquito-borne illnesses. Exploring Additional Uses for Recycled Tires While RARs are a beneficial use of recycled tires, further research into alternative applications could be advantageous. For instance, powdered rubber can be incorporated into building materials for socialized housing projects. Flooring and roofing materials made from recycled rubber could provide cost-effective and durable options for low-income communities. Vehicle and Road Safety Benefits RARs offer smoother and quieter roads, reducing noise pollution for nearby communities. Furthermore, rubberized asphalt has enhanced durability and better skid resistance, resulting in fewer accidents and lower vehicle maintenance costs. Improved traction and visibility, particularly in wet conditions, contribute to safer driving experiences. Who Should Lead the Research? Given the potential advantages and disadvantages of RARs, comprehensive studies are needed to evaluate their long-term effects. Government agencies such as the Department of Public Works and Highways (DPWH), the Department of Environment and Natural Resources (DENR), and academic institutions can collaborate to conduct these studies. Partnerships with the private sector, particularly tire manufacturers and construction companies, can further enhance the research efforts. A Solution for Farm-to-Market Roads RARs could provide a cost-effective alternative for constructing farm-to-market roads in rural areas. Since the Philippines has an abundance of used rubber tires, this approach could offer a sustainable and accessible means of improving rural infrastructure. This would enhance agricultural productivity and provide easier access to markets for farmers. Preserving Natural Resources While the global supply of limestone is finite, the supply of used rubber tires is virtually unlimited. Making the shift to RARs can significantly reduce the demand for limestone extraction, thus preserving natural landscapes and reducing environmental damage. Final Thoughts Balancing the pros and cons of rubberized asphalt roads requires careful consideration. As the world seeks sustainable infrastructure solutions, RARs present a promising path forward. With coordinated efforts from the government, private sector, and research institutions, we can explore how best to leverage this technology while addressing its challenges. Perhaps, with the right studies and innovations, the Philippine roadways could pave the way for a greener and safer future. Ramon Ike V. Seneres, www.facebook.com/ike.seneres iseneres@yahoo.com, 09088877282, senseneres.blogspot.com 05-21-2025