Three Factors That Determine Your Choice for Road Base Aggregate Material

For any road to endure harsh elements and heavy traffic, its base and sub-bases must be highly durable. As a road construction contractor, therefore, it's crucial to get all the basics right to design a robust and durable road. As such, you must choose high-quality aggregate materials, or you'll risk early road deterioration. During sourcing, consider the following essential factors discussed below to make an informed decision: 

Particle Angularity

For greater longevity of any road under constant pressure, its aggregate material must endure the weight exerted upon it. Therefore, you can accomplish this by using angular or cubical aggregate particles. The sharper edges of these aggregate particles offer more resistance under heavy traffic loads.  On the contrary, aggregate materials with smooth or round surfaces may roll out under intense or sustained traffic loads. Due to this, the road base could start deforming and developing sunken sections in various spots. The greater angularity of the aggregate material offers many points of contact. Hence, this results in increased friction between aggregate base particles for a durable and resilient road. 

Moisture Content

Different road base materials have a certain amount of moisture content, and you can never find one that's 100% moisture-free. Any material possesses moisture content, but the exact moisture levels are what make the difference. Thus, it's essential to source road base aggregates that meet the standard maximum dry density values allowable by construction regulations.  Road base materials with high moisture levels are not suitable for road construction works. For example, topsoil aggregate with clay content doesn't qualify as a decent road base material. The apparent reason is that clay has poor particle angularity and can easily deform under heavy traffic loads. 

Road Use Purposes

There are various uses for different roads, and it would be crucial to determine the road usage requirements before beginning construction. What types of trucks will run along the way? For example, roads in residential areas mostly serve light-weight vehicles such as saloons and SUVs. Therefore, the width and depth of such a road construction project may be less substantial than those roads serving heavy-duty trucks in industrial locations. Hence, you'll use less aggregate material here. Contrary to this, road projects meant for heavy vehicles will need stronger base material and extra aggregate materials. 

Final Thoughts

These are three essential factors to consider when sourcing road base supplies. Following these tips will not only help you complete your project on time but also save more on repair costs that come with premature road damage.