POTHOLE PROBLEM MASALAH JALAN RAYA LOPAK (KERJA PREMIX TAR)

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A pothole is a form of asphalt failure caused by a combination of water and traffic pressure. Potholes are a reality of life in MALAYSIA and across the globe. While it is nearly impossible to entirely prevent potholes from forming, understanding their causes can help you minimize their effects.

What Is Asphalt?

To truly understand what causes potholes, it is important to first understand what makes up asphalt. An extremely common and sustainable paving material, asphalt consists of aggregates, binders, and fillers. The aggregates vary, but are generally composed of gravel, sand, or rocks ground to different consistencies. Binders such as bitumen give asphalt a remarkable adhesive quality, holding it together and making it easy to pour and spread. Asphalt is normally heated before pouring to give it a longer workable time and to allow it to cure as it slowly cools.

What Is a Pothole?

A pothole is an unevenly cracked area where the asphalt is washed out or worn away. Potholes tend to worsen over time, and can range in diameter from a few inches to a few feet, with a depth up to several inches. Potholes make driveways and roads bumpy, and can even damage your vehicle’s tires and alignment.

How Do Potholes Form?

As vehicles pass across asphalt, the friction from the tires causes it to expand. Over time, this can lead to surface cracks in the asphalt. When it rains or snows, water seeps into those cracks. That water can gradually erode the asphalt from underneath, causing larger cracks and divots to form.
Our malaysian wheather add to the problem, because water can actually freeze inside the cracks. The expansion of water into ice pushes out the asphalt, often somewhat violently. When the water melts and contracts, there is nothing left in the space that the ice once occupied. This speeds up the erosion cycle, often causing large divots to appear quickly.
Whether the divot was left by freezing and thawing, or simply eroded over time, the end result is the same—a gap underneath the surface pavement. Then, when a vehicle drives over the divot, the weight pushes down on the divot, allowing it to collapse into a hole. As more vehicles drive over the pothole, the cracking worsens and the hole gets bigger.

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