Asphalt seam joints on roundabouts represent significant stress points for highway engineers due to the unique and complex nature of these traffic features. Roundabouts experience continuous and multidirectional vehicular loads, resulting in constant stress and strain on the pavement surface. The seam joints, where different sections of asphalt meet, are susceptible to wear and tear caused by the lateral and vertical forces exerted by vehicles negotiating the circular path. These forces can lead to accelerated deterioration, including cracking and rutting, which can compromise road safety and necessitate costly repairs. Highway engineers must carefully design and maintain these seam joints to withstand these dynamic stresses and ensure the longevity and structural integrity of the roundabout, ultimately contributing to safer and smoother traffic flow.

Roundabout can be treated with two types of repair. The first a 40mm deep Jointmaster to absorb movements but in instances of extremely high stresses then a rigid fill and overband MMA system is often used. It also has BBA HAPAS approval and can withstand the sideways stresses from turning HGV’s.

Our sales team will advise on the best methodology following a site inspection

A recessed crack repair system is an effective solution for repairing asphalt seam joints on roundabouts due to its ability to address the specific challenges posed by these high-stress areas. Roundabouts experience constant and multidirectional traffic loads, which can lead to the formation of cracks and fissures at the seam joints. The recessed crack repair system involves cutting and removing the damaged asphalt material within the crack, creating a well-defined recessed area. This recessed design not only removes the compromised asphalt but also provides a stable and clean surface for the application of repair materials. By filling the recessed area with a durable and flexible patching material, engineers can restore the seam joint's structural integrity, ensuring it can withstand the ongoing stresses and strains inherent to roundabout traffic. This method not only improves the aesthetics of the pavement but also enhances its longevity and performance, ultimately contributing to safer and smoother driving conditions on these critical road features.