ABSTRACT
The demand for shorter construction times, cost efficiency, and sustainable building methods requires innovative materials. In bridge construction, waterproofing remains a major durability challenge. A newly developed bituminous waterproofing system with a highly branched polymer matrix meets stringent technical requirements while significantly reducing construction time. The hot-applied waterproofing mastic offers exceptional temperature flexibility and elasticity. Its application eliminates steps such as polymer concrete (PCC) leveling, priming, and epoxy resin coating, avoiding long curing times. This improves cost efficiency and minimizes traffic-related environmental impacts, as roadworks are a major cause of congestion and CO₂ emissions. The system is also suitable for renovations as it compensates for surface irregularities without extensive PCC repairs. Applied in a liquid state rather than welded like a bitumen membrane, it precisely adapts to the substrate, ensuring seamless waterproofing. By optimizing construction processes, this system enhances both the sustainability and economic viability of infrastructure projects.
