AASHTO #8 Crushed Stone

Grade 8 Gravel


AASHTO #8 is a large grade of crushed stone. Like AASHTO #1, #3, and #57, it is a clean material that will not compact. However, the top size of AASHTO #8 aggregate is significantly smaller, making it ideal for different applications within the construction industry.

What Is #8 Crushed Stone?


Crushed stone is a construction aggregate very similar in appearance to gravel. However, gravel is naturally rounded and eroded over time, whereas crushed stone is mined and then crushed into specific sizes for practical applications. Grades of crushed stone are categorized by the size of the new stones after the mined material has been crushed.


Crushed stone is a sustainable resource that can be made from many varieties of hard stone. The most common types of rock used are limestone, argillite, washed gravel, granite, traprock and quartzite. Union Quarries uses Pennsylvania’s natural abundance of limestone to produce AASHTO #8 and other grades of crushed stone.


Many varieties of crushed stone are used in various construction projects, from base material for pavement to utility pipe bedding and even decorative lining for walkways.

AASHTO #8 Stone Size


AASHTO #8 has a 1/2-inch top size. Its reduced size makes it much easier to handle compared to bulkier grades of AASHTO stone.

Uses for AASHTO #8 Aggregate


Here are some common commercial and residential applications for material of this grade:


  • Asphalt mixes.
  • Oil and chip road surfacing.
  • Bedding for fuel and water tanks.
  • Decorative purposes and walking paths.
  • Driveway topdressing.
  • Utility pipe bedding.


If you’re planning on taking on any of these construction projects, AASHTO #8 might be the right material for you. You can use our product calculator to help determine how much material your project will require. When you know how much you will need, you can request a free quote from Union Quarries.

Find the Right Crushed Stone for Any Project at Union Quarries


Union Quarries has been Central PA’s reliable provider of crushed stone for over half a century, so we know how vital it is that a construction or landscaping company has consistent access to a supply of high-quality concrete, stone and blacktop. Union Quarries is proud to be a trusted provider of these materials to businesses across the entire Central PA region.


Safety is always a priority at Union Quarries, and our advanced processes allow us to offer specialized services you won’t find anywhere else in the area. We provide AASHTO #8 aggregate as part of a wide range of sizes of crushed stone to fit the needs of any commercial or residential construction project you have in mind.

Contact Union Quarries Today to Begin Your Next Construction or Landscaping Project


Don’t hesitate to reach out to Union Quarries if you are a contractor, builder, developer or homeowner unsure which grade of crushed stone is the right fit for your next project. Give us a call at (717) 249-5012 or get in touch with us online to talk to a representative about finding the right grade of crushed stone for your plans.