performance-based asphalt mix design method, was introduced in 1993 as part of the Strategic Highway Research Program. By implementing three mechanisms— asphalt binder specifications, a volume mix design and analysis system and a mix analysis testing procedure— the program dramatically increased highway longevity. Superpave is still in use today and continues to be refined.
Here and Now The industry continues to develop ever-improving iterations of perpetual pavement, a type of asphalt pavement designed to last 50 years or longer without major repairs. In addition to advancements in hot mix materials, the equipment used to lay it has vastly improved, with many innovations filtering down from highway projects to commercial applications.
One example is the screed paver. Though used since the 1930s, screed pavers traditionally depended on diesel or propane for heat, making uninterrupted mat-laying impossible. Electrically heated screed pavers, in use since the early 1990s, produce continuous heat via an onboard generator powered by the paver itself. Eliminating the downtime spent refueling has increased productivity and improved quality.
The digital revolution has also transformed the asphalt industry. Today’ s operator stations resemble airplane cockpits with digital control boards that could excite a hardcore gamer. Computer technology has brought intelligence to paving, with global positioning systems, sensors and automation providing precision control like never before. These systems adjust to varying conditions, optimize material usage and ensure uniform results. They also minimize environmental impact with lower emissions, improved energy efficiency and the ability to incorporate recycled materials.
Telematics is another game-changer. By combining telecommunications and information processing, telematics transmits and analyzes data in real time, allowing contractors to run more efficient and profitable businesses. This technology enables dispatching of the next machine needed for a project, reassignment of equipment based on weather conditions and real-time operational adjustments. It also improves mobile fleet visibility, optimizes route planning and eliminates the need for phonebased communication.
Like every industry, asphalt paving has been reshaped by technology. But upcoming innovations would have seemed like science fiction when the industry began in the late 1800s.
To Infinity and Beyond!
Buzz Lightyear would definitely be excited about where the industry is headed in 2025. Many revolutionary ideas are on the horizon, and some are already in limited use. A few still in the research-and-development stage are generating as much anticipation as the next iPhone release.
Energy Harvesting: Imagine roads that generate energy as vehicles pass over them, powering streetlights, charging stations or even nearby buildings. This technology involves incorporating piezoelectric materials into asphalt to convert mechanical stress into electrical energy, creating a sustainable power source. Smart Roads: By 2025, designated roads will be
44 April 25, 2025 www. contractorshotline. com