The Perfect Gravel Rock for Construction
The Perfect Gravel Rock for Construction
The Perfect Gravel Rock for Construction
The Perfect Gravel Rock for Construction
We all know what gravel is. At least, we think we do.
But actually, gravel isn't just any old rock. It must be quarried from a certain kind of gravel rock deposit, and it must meet several qualifications in order to even be considered gravel. So what kind of rock is used to make gravel, and how do the different types of gravel affect construction projects?
There are lots of different types of gravel rock. First, there's limestone and dolomite, two kinds of gravel rock often mined together from the same quarries. Limestone and dolomite don't come out of the earth as gravel; the large pieces must be broken down into fragments and then crushed, so they're the correct size. Limestone and dolomite can be bought and sold separately; however, since they're often quarried together, companies sometimes don't bother to separate one from the other.
Next up is granite. Like sandstone and dolomite, granite comes out of the ground in large slabs and must be crushed in order to make gravel. Granite is one of the hardest stones Mother Nature makes, and it can't be shaped by pressure or heat. That makes granite an ideal gravel rock for roadbeds, railways, and building foundations. It's also quite attractive: people like to use it for driveways and garden paths.
Basalt is a volcanic gravel rock which can be found in shades from black to light gray. It's porous and very light, owing to its volcanic origins, which makes it easy to transport. Like granite, bastalt is a popular choice for lawn and garden work. Some people use basalt to fill in around their shrubs.
Sandstone is composed of aggregated sand and rock dust, which gives it a brown, beige, or tan color. Sandstone is very common in the United States, especially in the American Southwest where it's made into terracotta. In its gravel form, sandstone gravel rock often contains sparkly quartz, and red or pink iron oxide, which makes it especially appealing.
Finally, despite its name, crimson stone gravel can be found in a variety of colors, including reds, blacks, pale inks, and beige. Crimson stone gravel rock is another gravel used mostly in decorative work, rather than in construction. Like sandstone, it's most often found in the American Southwest.
Whether you're looking to lay a new road, line your garden, or fill in a foundation, gravel rock will fit your construction needs perfectly. There are so many kind available, it's hard to choose just one!
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