Comparison of the stakeholder perspectives on the maintenance cost differences between limestabilized and conventional roads in Kampala

Abstract

The increasing vehicular traffic and adverse climatic conditions in Kampala, Uganda, have significantly impacted road infrastructure, leading to frequent and costly maintenance interventions. This study investigates stakeholder perspectives on the maintenance cost differences between lime-stabilized and conventional asphalt roads in Kampala. The research adopts a mixed-methods approach, collecting quantitative data through structured questionnaires and qualitative insights through open-ended responses from construction professionals, including civil engineers, architects, and quantity surveyors. Findings indicate that lime stabilization is perceived to reduce maintenance frequency and costs, with respondents estimating a 49% reduction in annual maintenance costs for lime-stabilized roads compared to conventional roads. This cost-saving is attributed to the increased structural stability and moisture resistance provided by lime, resulting in less frequent resurfacing and patching. However, stakeholders highlighted potential barriers to adopting lime stabilization, including higher initial costs, limited skilled applicators, and resistance to new construction techniques. Recommendations include implementing awareness programs to educate stakeholders on the long-term economic benefits of lime stabilization, promoting public-private partnerships to offset initial costs, and training programs to enhance technical expertise. The study concludes that while lime stabilization presents a viable cost-effective maintenance strategy, its adoption requires concerted efforts to address stakeholder concerns and infrastructural challenges specific to Kampala.