Materials Guide 101: Understanding Asphalt Paving

When it comes to building strong, long-lasting driveways, parking lots, and roadways in Atlantic Canada, the right materials make all the difference. At Maritime Paving, we believe an informed customer is a confident customer. That’s why we’ve put together this quick Materials Guide 101 to help you understand the products that go into your asphalt paving project.

What is Asphalt?

Asphalt is a durable, weather-resistant paving material made by mixing aggregates (like crushed stone, sand, or gravel) with bitumen, a sticky petroleum-based binder. This combination creates a smooth, flexible surface that can handle heavy traffic, resist water, and withstand our Maritime climate.

Key Asphalt Materials You Should Know

1. Aggregates

Aggregates make up about 90–95% of asphalt mix by weight. These include:

• Crushed Stone & Gravel: Provide strength and stability.

• Sand: Fills gaps between larger stones for a smoother finish.

• Recycled Asphalt (RAP): An eco-friendly option that reuses old pavement.

2. Bitumen

Bitumen is the “glue” that binds the aggregates together. It’s flexible, water-resistant, and designed to expand and contract with temperature changes—perfect for Atlantic Canada’s freeze-thaw cycles.

3. Base & Sub-Base Layers

A strong foundation is critical for pavement longevity. Before asphalt is laid, a base layer of crushed stone and a sub-base of compacted soil or gravel ensure stability and proper drainage. Without a strong base, asphalt can crack or sink over time.

4. Hot Mix Asphalt (HMA)

This is the most common type of asphalt mix. It’s heated and laid while hot, allowing it to be compacted into a smooth, dense surface. HMA is ideal for high-traffic areas like roads, highways, and commercial parking lots.

5. Warm Mix Asphalt (WMA)

A newer, eco-friendly option that uses less energy during production. It’s easier to work with in cooler weather and produces fewer emissions, making it a sustainable choice for paving projects.

6. Sealcoating & Protective Layers

Sealcoating doesn’t replace asphalt, but it helps protect your pavement from UV rays, moisture, oil spills, and daily wear and tear. Think of it as sunscreen for your driveway or parking lot.

Why Material Quality Matters

Choosing the right mix of materials directly affects the strength, appearance, and lifespan of your pavement. At Maritime Paving, we:

• Use high-quality aggregates and binders designed for Atlantic weather.

• Ensure proper base preparation to prevent cracks and potholes.

• Offer eco-friendly solutions like recycled asphalt and warm mix paving.

Final Thoughts

Understanding the materials behind your asphalt paving project can help you make better decisions and feel confident in your investment. At Maritime Paving, we’re committed to using durable, sustainable materials that keep your surfaces smooth, safe, and long-lasting.

Ready to start your project? Contact Maritime Paving today for a free consultation.