Hard Rock Mix (3/4")

3/4" Crushed Stone Angular crushed rock used to create strong, stable foundations for driveways, walkways, and landscaping. It compacts well and supports heavy loads while allowing drainage.
Product ID 835
$25 - $508
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3/4" Hard Rock Mix (Crushed Stone): Material Details and Key Uses

3/4" Hard Rock Mix, also known as 3/4" Crushed Rock, 3/4" Aggregate Base, 3/4" Crushed Stone, 3/4" Gravel Mix, or 3/4" Road Base (when blended with fines), is a widely used angular crushed rock aggregate. This material is produced by mechanical crushing and screening of hard, durable stone such as granite or basalt. The particles have a nominal size of 3/4 inch, meaning they pass a 3/4" sieve and are retained on smaller sieves. The mix may include a range of stone sizes up to 3/4" and can be supplied either "clean" (washed, with little or no fines) or "with fines" (containing small particles for compaction).

The color of 3/4" Hard Rock Mix is typically gray or natural stone. Its angular shape allows the material to interlock and compact well, supporting heavy loads and providing structural stability. When washed and free of fines, it is free-draining and suitable for applications requiring water movement. When blended with fines, it is compactable and forms a dense base.

Typical Specifications

Property Specification
Nominal Size 3/4 inch (passes 3/4" sieve)
Material Type Crushed, angular hard rock (granite, basalt, etc.)
Specific Gravity ~2.6-2.7
Absorption Typically <2%
Cleanliness Limits on clay, organic matter, etc.
Standards ASTM C33 (concrete), ASTM D2940 (base), or local DOT specs
Moisture Content Varies as delivered

Common Applications of 3/4" Hard Rock Mix

This material is suitable for a wide range of residential, commercial, and infrastructure projects. Its angular texture and gradation make it especially effective for load-bearing and drainage uses.

  • Top layer for driveways and parking lots: Provides a stable, compacted surface that drains well.
  • Base material: Used under concrete, asphalt, or pavers for structural support.
  • Drainage layers: Washed (clean) material is used in French drains, pipe bedding, and behind retaining walls.
  • Ground cover: Suitable for landscaping, erosion control, and decorative purposes.
  • Interlocking aggregate: Effective for creating stable, compacted layers in construction and landscaping.
  • Concrete aggregate: When meeting ASTM C33, used in concrete mixes for strength and durability.

Comparison with Similar Materials

Material Main Characteristics Typical Use
3/4" Hard Rock Mix Angular, durable, compactable or free-draining Driveways, base, drainage, concrete
Pea Gravel Rounded, less stable, not compactable Decorative, non-structural ground cover
3/4" Crushed Recycled Concrete Variable composition, less durable Base, fill (when cost is a factor)
Sand Fine, not structural, smooth Bedding, leveling, not for drainage/base
1-1/2" Crushed Rock Larger size, less compaction Heavy-duty base, drainage

Limitations and Incorrect Applications

3/4" Hard Rock Mix is not suitable for every project. It should not be used as a finished surface for playgrounds or areas needing soft footing. Washed (clean) 3/4" rock is not intended for applications where compaction is required; use a product with fines for those cases. This material is not recommended as topsoil, planting medium, or in situations where a fine, smooth surface is needed. It is not suitable for uses requiring rounded aggregate or specific decorative color unless specified. Chemical or highly reactive environments require further testing of the material.

Benefits and Characteristics in Practice

  • Angular particles interlock for stability and compaction.
  • With fines, it forms a dense, load-supporting base for driveways and parking areas.
  • Washed material promotes water flow and drainage, reducing pooling and erosion.
  • Consistent sizing and quality meet industry and regional standards.

Ordering, Delivery, and Practical Information from Gravelshop

Gravelshop supplies 3/4" Hard Rock Mix across the United States. All prices shown on our website include delivery to your address, with no hidden fees. Enter your ZIP code on the site to see material and delivery prices specific to your location. After placing your order, you will receive a confirmation email with payment and shipping details. Delivery is performed by independent trucking companies. The driver will unload the material at the most suitable spot based on site conditions. We do not spread or install the material. If you are not present at delivery, the material will be left unattended, and you assume responsibility.

You can select your preferred delivery date and time slot (morning or afternoon) during checkout. We accept major credit cards, Apple Pay, Google Pay, and Cash App Pay. For more information or larger orders, contact us directly through our website.

Sample Price List for 3/4" Hard Rock Mix

Prices for 3/4" Hard Rock Mix vary by region due to local sourcing and delivery distances. The table below shows a selection of example prices (per ton) and delivery charges in several US locations. All prices include delivery.

City ZIP Code County Price per Ton ($) Delivery Price ($)
Wilmington 28401 New Hanover 292 150
Belmont 94002 San Mateo 131 135
Phoenix 85003 Maricopa 62 200
Collins 14034 Erie 30 135
Acton 93510 Los Angeles 69 197
Indio 92201 Riverside 58 160
Red Bank 07701 Monmouth 89 98
Prescott 86301 Yavapai 47 112

To see the exact price for your project, enter your ZIP code on our website. Pricing reflects local sourcing, logistics, and delivery.

Important Considerations

  • Material is delivered loose, not bagged, and will be left at the most suitable accessible location.
  • We do not offer spreading or installation services.
  • Material size and fines content may vary by up to 5%.
  • Minimum order quantities apply and vary by location.

For accurate volume estimates, use our online material calculator. For any questions or custom orders, contact Gravelshop support.



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Frequently Asked Questions

3/4" Hard Rock Mix is commonly used as a top layer for driveways and parking lots, a base material under concrete or asphalt, drainage layers, ground cover, and concrete aggregate. Its angular shape provides stability and good compaction.

Washed 3/4" Hard Rock Mix, which is free of fines, is ideal for drainage applications such as French drains and pipe bedding. It promotes water flow and reduces pooling and erosion effectively.

The material is delivered loose by independent trucking companies and left at the most suitable accessible spot on your property. Delivery dates and time slots can be selected during checkout, but we do not offer spreading or installation.

Yes, 3/4" Hard Rock Mix works well as ground cover for landscaping and erosion control. Its angular particles interlock to provide a stable surface, though it is not meant for decorative uses requiring rounded or colored stone.

The mix contains crushed stone particles that pass through a 3/4" sieve and include sizes up to 3/4 inch. It is typically angular and produced from durable rock like granite or basalt.

3/4" Hard Rock Mix is available either clean (washed with little or no fines) or with fines (small particles included). Washed material is good for drainage, while material with fines compacts better for base layers.

This material is not suitable as a finished surface for playgrounds or areas needing soft footing. It is best used as a structural base or drainage layer, not for smooth or soft surfaces.


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