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Commonly used in the production of ready-mix concrete. The American Association of State Highway and Transportation Officials (AASHTO) defines the sizes of crushed stones. AASHTO #67 crushed stone is used mostly on construction and landscape projects as an aggregate, decoration or in a mix for concrete.
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AASHTO #67 stone is similar to 2B stone in size. In some applications, #67 gravel might be used with other stone types, such as sand or other smaller aggregates to achieve the desired compaction and drainage. The material is produced by breaking rocks down into varying sizes, #67 being just one of them.
The process involves mining suitable rock deposits and then crushing them down into different-sized products, which are all used for different applications. Crushed rock is often made from different rock types, including limestone, granite and trap rock, depending on where it is quarried. The stone’s angular shape and rough texture help it lock together for foundations but still allow water to drain through.
The advantages of crushed stone include:
The stone can be as small as ¼ inch with a 1-inch topsize. The material is well-graded, which means it includes a mix of stone sizes within the specific range. The variety of #67 stone allows for it to compact well and give a stable base while also providing good drainage capabilities.
AASHTO #67 is commonly used in a premix for ready-mixed concrete. But you often find it used in other ways, mostly in drainage, foundation, as a road base and as an asphalt aggregate. Other uses include:
AASHTO #67 stone is also used as a foundation material for construction projects in residential, commercial buildings and other structures. Because it compacts well, AASHTO #67 gravel can be used under concrete slabs and sidewalks or as a utility pipe bedding.
Unsure if AASHTO #67 stone is the right choice for your project? Here’s some more information to help you make the right decision.
Yes, AASHTO #67 is suitable for ready-mix concrete, foundation bases, drainage and decorative landscaping. It’s often used for foundation drains, retaining wall system backfill, road base layers, septic fields, flower beds and walkways.
AASHTO #67 does compact, but it does so because its angular pieces interlock thanks to vibration, and they hold together thanks to their rough surfaces. It doesn’t compact the same way a dense-graded base with fines would. Its compaction properties make #67 stone useful for under foundations and sidewalks, as well as under and around utility pipes to keep them stable.
#67 stone provides good compaction while also allowing water to drain through. Its angular shape helps the stones lock together enough to form a stable base but still leaves large enough gaps to prevent pooling in most cases. This balance means that #67 stone works well for foundations, drainage applications and retaining wall backfill.
AASHTO #67 crushed stone ranges from approximately ¼-inch to a 1-inch top size. It contains a mix of stone sizes within this range, so not all the stones will be the same size.
Yes, you can use #67 stone for both structural foundation support (under slabs and as an aggregate in concrete mix) and for decorative purposes. Its angular shape helps it form a stable base for foundation work, while its pleasing appearance and good drainage properties make it suitable for landscaping projects.
Chat with us regarding your needs for crushed stones. We have various products available from cement to masonry, gravel and stone. Our company has been in business for over 80 years, so we can guide you through our vast product range. You will find that our materials are used for all types of projects, from large to small. As one of the largest concrete product manufactures in the U.S., we’re able to refine our products to the highest quality and make recommendations based on your project needs.
Contact us online and let us know how we can help you meet your project objectives.
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