Different Types of Asphalt Road Damage

Economic activities are strongly supported by the availability of road infrastructure.

Good roads facilitate connections between various regions. On the other hand, damaged roads will certainly hamper economic activity and can be the cause of accidents.

Fatigue cracking and deformation of all asphalt pavement layers

Types of damage to asphalt roads in the form of fatigue cracks and deformations in almost all layers of the road, especially on cross-provincial roads.

The reason is none other than the large number of heavy vehicles passing by, such as buses and trucks. Heavy vehicle loads cause strain and stress in each layer of pavement. Vehicle loads that continue to pass will eventually cause fatigue cracks and deformation to appear.

If fatigue cracks and deformations are left alone, then during the rainy season it is certain that water will enter the gap and turn the crack into a hole that is getting bigger and bigger. Therefore, if fatigue cracks and deformation occur, repairs must be carried out immediately by means of backfilling.

Roads with asphalt pavement are actually not suitable for heavy vehicles to pass. Heavy vehicles should be directed to cross concrete roads that have a stronger structure than roads with asphalt pavement.

1. Crack

There are various types of cracks that can occur in asphalt pavements, including crocodile skin cracks, edge cracks, shoulder joint cracks, reflection cracks, shrinkage cracks, and slip cracks.

One of the biggest factors causing these cracks is the poor road drainage system. Therefore, the solution is not enough just to patch the existing cracks. A drainage system needs to be built so that the same type of damage doesn't happen again.

A good drainage system for asphalt pavement must be able to drain or drain water quickly into artificial drainage channels or into rivers.

This drainage system must also be able to remove rainwater or water from other sources and control underground water that can cause erosion or landslides.

The drainage system that has been built must be maintained and functioning properly. The drainage system needs to be cleaned regularly of debris and grass to allow water to drain smoothly.

Ideally, the construction of roads with asphalt pavement should also be accompanied by the construction of a drainage system. If not, it is certain that asphalt road damage cannot be avoided.

In building a road drainage system, there are several important things that need to be considered, including topographical conditions along the road to determine the shape and slope that affect water flow, analysis of maximum rainfall in one year in areas in the asphalt road area, and drainage system planning. . so as not to interfere with the flow of water. existing drainage.

2. Distortion

Distortion or deformation of asphalt pavement can occur due to weak subgrade and suboptimal compaction of the foundation layer. Distortions that occur on asphalt roads can be in the form of subsidence, nails, indentations and grooves.

Asphalt road damage in the form of distortion is not enough to be repaired just by patching it. Repairing distortion damage is quite complicated and time consuming. Distortions on asphalt pavements must be corrected by scratching again, compacting again, then adding a new surface layer.

The compaction stage in the road construction process must be carried out carefully. Compaction should be carried out to increase soil strength, minimize the influence of water on the soil and reduce water seepage in the soil. This compaction step is carried out layer by layer in order to obtain the ideal density.

This compaction stage generally uses tools. For example, three-wheel rollers or Mac Adam rollers weighing between 6 tons and 12 tons are used to compact coarse grained materials, tandem rollers weighing between 8 tons and 14 tons are used to obtain a slightly smooth surface finish, and pneumatic fatigue. These rollers are suitable for grinding clay, sand and granular materials.

3. Obesity

Damage to obesity in question is a slippery asphalt road surface. This damage occurs when the temperature rises so that the asphalt becomes soft and the vehicle's wheel tracks will leave marks on the surface of the road layer.

This damage called obesity usually occurs on asphalt roads that use high asphalt content in the asphalt mixture or due to the use of too much asphalt in the prime coat stage.

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