Introduction. Crushed stone mastic expansion joints are an important element of bridge structures that compensate for temperature and mechanical deformations, ensuring their durability and reliability. These materials combine high strength and resistance to aggressive external conditions, making them the optimal choice for modern bridges. However, for the effective operation of such joints, it is necessary to take into account a number of factors that can affect their performance, including climatic conditions and the intensity of traffic loads.
Problems. The problem of operation of crushed stone mastic expansion joints on bridges is caused by a number of factors that can affect their efficiency and durability. First of all, these are mechanical loads from heavy traffic, which cause wear and tear of materials, as well as temperature fluctuations, which can lead to expansion or contraction of the joints, which in turn negatively affects their integrity. In addition, aggressive atmospheric conditions such as moisture, frost, and chemicals used on roads can accelerate material degradation. Insufficient control over the condition of expansion joints or untimely maintenance can lead to serious damage to bridge structures, which threatens traffic safety and increases repair costs. Therefore, it is important to develop effective methods for monitoring, maintaining and repairing these joints, as well as to take into account specific operating conditions when designing and using crushed stone mastic materials.
Objective. The purpose of this article is to investigate the peculiarities of operation of crushed stone mastic expansion joints on bridges, to study the factors that affect their efficiency and durability, as well as to consider the main problems associated with their use. In particular, the goal is to analyze the impact of loads, temperature changes and aggressive atmospheric conditions on the condition of the joints, as well as to develop recommendations for optimizing their operation and maintenance to ensure the safety and reliability of bridge structures.
Conclusions. Crushed stone mastic expansion joints are an effective solution for compensating for temperature and mechanical deformations on bridges, ensuring their durability and stable operation. The main factors affecting the effectiveness of the joints are heavy traffic, temperature fluctuations, and aggressive atmospheric conditions. Insufficient monitoring and untimely maintenance can lead to degradation of the joints and serious damage to bridge structures, which threatens traffic safety. To ensure the reliable operation of crushed stone mastic joints, it is necessary to regularly inspect them and carry out timely repairs. The use of modern monitoring and maintenance methods will maximize the service life of expansion joints and improve the safety of bridge structures.
