Summer maintenance of roads: technologies and standards

The period from May to October is critical for road infrastructure, as it is at this time of year that the main measures are taken to restore and maintain the operational state of the canvas. High temperatures and heavy traffic create unique conditions that require the use of specific laying technologies. asphalt-concrete and strict adherence to temperature regimes. Unlike in the winter, when the main task is to clear snow and ice, summer road maintenance focuses on eliminating surface defects resulting from spring soil overflow.

The effectiveness of summer work directly affects the life of the roadway and traffic safety. Untimely removal of potholes or insufficient maintenance of the roadside lane can lead to accelerated degradation of the road structure. Professional approach implies the integrated use of modern technology, high-quality materials and accurate adherence to the regulations established by the GOST R 50597-2017. In this article, we will discuss in detail the key aspects of summer content that every industry specialist should know.

Yamok repair and restoration of the coating

The main type of work in the summer is the elimination of local destruction of the coating. The technology of pit repair requires that the air temperature is not lower than +5 ° C, and the surface of the base remains dry. To ensure the durability of the "patch" must be used map-diagram cuttings that provide for the correct geometry of the edges of the defect. Often used the method of maps, when cutting is made to the entire depth of asphalt concrete layer with vertical walls.

Modern requirements dictate the use of vibrating plates or skating rinks for high-quality sealing The stacked mixture. Insufficient sealing is one of the main reasons for the rapid destruction of the repaired site. In places adjacent to the hatches of wells or sides of curbs sealing should be done with special care, as it is there that drawdowns most often occur.

⚠️ Attention: It is strictly forbidden to lay asphalt concrete mixture on a wet or frozen base, as this leads to instant detachment of the material and the formation of a new pothole.

For small amounts of work and prompt elimination of defects at night are often used pavement or hot mixtures in bags. They do not require a heavy rink to lay, but are sensitive to surface cleanliness. Before applying the material, the surface must be treated bitumen-emulsion Binding to ensure adhesion.

Roadside care and drainage

The condition of the roadsides plays a crucial role in the safety of the carrying layer of road clothing. The main task in the summer is to ensure free water flow from the roadway and prevent its stagnation. For this purpose, a regular profiling They are reversing their slant back. If the slope of the roadside is less than the slope of the carriageway, water will begin to accumulate at the edge of the coating, blurring the base.

Vegetation control is an important element of care. Tall grass not only worsens the view, but also contributes to the accumulation of moisture. Mechanized squirrel should be carried out regularly, followed by removal of the bevelled mass from the withdrawal lane. Left on the side of the grass turns into dust, which when wet turns into a slippery substance, dangerous for motorcyclists.

The drainage system requires special attention during periods of heavy rains. The trays, ditches and water passage pipes must be cleaned of silt, sand and debris. Clogging drainage facilities It can lead to flooding of the earthbed and its subsequent erosion. In some cases, a device or restoration is required. berm to divert water outside the road.

Dust control and maintenance of dirt roads

On roads with a transitional type of coating and dirt areas, the main problem of the summer period is dustiness. Dust not only reduces visibility, but also acts as an abrasive, destroying the surface of the coating and getting into vehicle nodes. This phenomenon is being used to combat dust-crushing watering with water or special compositions. However, a simple watering gives only a short-term effect.

A more effective method is the treatment of the surface with calcium chloride or lignosulfonates. These hygroscopic substances attract moisture from the air, keeping the road surface moist even in dry weather. Application technology requires uniform distribution of the reagent and its mixing with the top layer of the soil using the help of grader Or resyclair.

It is important to observe the dosage of reagents, since their excess can lead to pollution of adjacent water bodies and soil. Regular profile The dirt road is also needed to remove the track in which water accumulates. The lack of timely profiling leads to the formation of deep ruts, which in rainy weather become impassable.

Materials and temperature conditions

The quality of summer repairs is impossible without strict control of temperature parameters. The asphalt mixture shall be delivered to the facility at a temperature corresponding to the type of binder and the distance of carriage. For hot mixtures, the temperature during unloading is usually between 110 and 140°C. Excess temperature can cause the "aging" of bitumen, and the decrease - the impossibility of quality sealing.

For the preparation of mixtures, various types of bitumen are used, modified by polymers to improve heat resistance. In summer, the use of crushed stone of strong rocks is especially important, since soft crushed stone under the influence of the sun and heavy loads can “swim” forming plastic deformations. Controlling graphometric It is a mandatory procedure in the laboratory.

Traffic organization and security

Summer maintenance of roads is inextricably linked with the safety of traffic participants in the area of work. I agree. GOST R 52289-2019Workplaces should be fenced using standard technical means of road traffic management (TSODD). Cones, signs, barrier fences and flashing lights must be installed before the work begins and removed only after they are completed.

Particular attention is paid to night work, which is often carried out on roads with high traffic intensity. In the dark, you must use it. retroreflective on the clothing of the staff and light indication on the equipment. The traffic management scheme should be clear to drivers and minimize the number of conflict points.

⚠️ Attention: Installation of speed limit signs in the work area should be justified by real conditions; artificial understatement of speed without need creates traffic jams and increases the risk of accidents.

Staff working on the carriageway must undergo regular briefings and have access to work. The presence of a signaler that controls the flow of transport in bottlenecks is a mandatory requirement when working on roads of the first and second categories. Mechanisms must be equipped with flashing beacons yellow.

Quality control and acceptance of work

The final stage of any road maintenance event is the quality control of the work performed. It is carried out using both visual and instrumental methods. Particular attention is paid to the levelness of the coating, which is measured by means of profiler Or three-meter slats. The irregularities should not exceed the values established by the standards.

To assess the strength and density of asphalt concrete, a non-destructive method is often used using defectoscope Or pulse-impulse devices. Cores may also be selected for laboratory testing, although this method is destructive and requires subsequent sealing of the selection sites. All data are recorded in the executive documentation.

A critical indicator is the sealing coefficient, which for the upper coating layers should be at least 0.98 of the laboratory standard. Insufficient sealing coefficient leads to rapid water entry into the pores of the material and its destruction when frozen.

Frequently Asked Questions (FAQ)