Asphalt vs. Concrete Paving: Material of the Future
All of us have come across asphalt and concrete paving, whether it is asphalt roads we drive on or the concrete sidewalk we walk on. No matter if you live in suburbia or the city, I am sure you have come across someone re-paving or re-doing their parking lot, driveway, etc. Most will end up choosing asphalt or concrete driveway, which leads to the natural question: which one is better? There are pros and cons to each, which you should consider when choosing your driveway.
Asphalt is the more popular choice by consumers for driveways. Asphalt is made from stones and aggregate stuck together in bitumen. Bitumen is oil-based fuel, which in its natural form is too heavy to flow; therefore it has to be melted. Bitumen is not a solid though, so as it binds the aggregates it stays flexible. Since bitumen is the glue agent, asphalt is susceptible to great changes, depending on the weather. It can become hard during cold temperatures and very soft during heat waves, and especially at high temperatures during the summer. The higher flexibility of the asphalt means that less load distribution occurs on the ground, so the impact of heavy cars, trucks or machinery is more noticeable as it sinks under their weight.