Cutting and grouting cracks and joints
Cutting and grouting cracks and joints (hereinafter referred to as “joints”) is a technology that our company has added to its portfolio of services. When performing this work, we use high-quality modified asphalt grouting that meets the most stringent criteria, prescribed properties and regulations, in particular the technical conditions of TP 115 “Repair of cracks on asphalt-covered roads”, as amended.
When repairing joints, we use an SRF 200 milling machine equipped with its own drive, which allows it to be transported independently to the workplace and to move around while milling the joint. The machine is equipped with a HATZ two-cylinder diesel engine that drives a double hydraulic gear pump located in the hydraulic tank. The engine is equipped with a control panel and the hydraulic pump is used to drive the cutter’s hydraulic motor, the drive’s hydraulic motor, the hydraulic steering cylinder and the hydraulic cylinder for lifting and lowering the cutter. A special groove cutter with a diameter of 160 to 180 mm is used to cut grooves in road surfaces. The cutting depth is adjusted by raising and lowering the front part of the machine on the control wheel using a hydraulic cylinder controlled by a foot pedal.
The joints are cleaned with compressed air and, if necessary, sealed with sealing cord, which we have available in several sizes. Finally, the treated joint is filled with hot modified asphalt using a ZS-2 asphalt cooker with a Kubota engine, which seals the treated crack or joint, preventing further damage to the surface. In order to put the repaired road back into service as quickly as possible, the joints are filled with stone dust or crushed limestone, which, under suitable climatic conditions, allows the road to be opened to traffic within approximately 10-15 minutes after filling.
We use virtually the same technology in cement concrete surfaces, where cracks can also be treated with a penetrating coating, which has been proven to extend the life of treated cracks and joints.
