Many business owners prefer asphalt to concrete pavement for various
reasons. Among other things, asphalt is more economical yet just as durable as
concrete when used only for lightweight vehicle parking. In addition, asphalt looks
more appealing than concrete while the smoothness of its surface keeps friction
to a minimum. Yet like concrete, asphalt has its weaknesses that, if addressed properly,
can be surmounted.
Heavy Loads
Most asphalt pavements are designed for vehicles no larger than a
mini-truck. A large truck will leave tracks on the asphalt, so allowing such a
heavy load to sit on the pavement for a long period may create a few
centimeters of depression. Even heavy dumpsters have to be parked well away
from an asphalt pavement or on a concrete padding to prevent the same
consequence.
Sunlight
Unfortunately, asphalt is susceptible to sunburn. It can easily lose
its dark color due to extended exposure to sunshine. The heat from the sun can also
hasten the oxidation of asphalt’s oil component, weakening its ability to hold
the rocks together. This leads to quick disintegration of aggregates, which
causes the formation of potholes.
Surface Water
Water affects asphalt just as much as sunlight does. In particular,
water loosens the bond between the asphalt and the aggregates, causing the
pavement to slowly collapse and form cracks. To prevent this from happening, the
entire asphalt pavement must be designed with proper drainage. In addition, all
water formation in uneven areas across the pavement must be removed right away.
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