Recently, there are many people who pay attention to the types of asphalt pavement joints, but there are not many people who may really understand.
Asphalt pavement sub-chamber joint refers to a technology that cuts asphalt pavement and fills it with joint material according to different needs. Its main purpose is to prevent cracking, deformation and damage to the pavement, and to improve the service life and running quality of the pavement. In practical application, according to different needs and conditions, asphalt pavement chamber joints can be divided into the following types.
1. Asphalt wide joint: This type of joint is usually relatively wide, which is suitable for areas or road sections that require better drainage performance. The common wide joint width is 10-20 mm, and the filling material is highly elastic asphalt rubber strip or rubber rubber strip. The advantage of wide joints is that they are easy to construct and maintain, and are resistant to large deformations and the development of cracks. However, the disadvantage of wide seams is that they may affect the comfort of the vehicle, and they also require more frequent maintenance and replacement.
2.Asphalt Narrow Joint: This type of joint is narrow compared to a wide joint, usually between 3 and 8 mm wide. Narrow slits are suitable for areas that require greater ride ride and driving comfort, such as highways. High-viscosity asphalt colloids are often selected for narrow joint filling, which has strong adhesive properties and water immersion resistance. The advantage of narrow slits is that they provide better driving comfort and reduce noise, while also effectively controlling crack propagation. However, the construction and maintenance of narrow joints are relatively difficult.
3.Asphalt concrete expansion joint: This joint type is mainly used to solve the shrinkage and stretching problems of asphalt pavement affected by temperature. In asphalt concrete pavement, expansion joints are set to accommodate the expansion and contraction deformation of the pavement to reduce the generation of cracks and deformation. Expansion joints often use metal strips, rubber belts and other materials as filling materials, which have high durability and ductility. The setting of expansion joints of asphalt concrete can effectively reduce the deformation and cracks of the pavement, and improve the service life and stability of the pavement.
Asphalt pavement sub-chamber joints are a very important part of pavement engineering. Through the reasonable selection and design of the type of sub-silo joint, the cracking and deformation of the pavement can be effectively prevented, and the service life and driving comfort of the pavement can be improved. With the continuous development of technology, some new silo joint technologies have also emerged, such as elastic anti-aging rubber strip sub-bin joint, cold-impregnated asphalt rubber strip sub-bin joint, etc., which have been innovative in filling materials and construction methods. The application of these new technologies has further expanded the field of asphalt pavement silo joints, providing more options and possibilities for pavement engineering.