Crushed Stone
Diverse Uses Driven by Abundance, Availability and Application

Limestone, dolomite and granite are the most common types of rock processed into crushed stone. Limestone and dolomite account for 71% all crushed stone; granite makes up 15%. The remainder is sandstone, quartzite and other types of rock.

It is produced by crushing quarried rock, then screening it to sizes appropriate for the intended use.

Limestone is the most common used crushed stone because it’s widely available and suitable for many different applications. It’s the primary ingredient of cement, the main component of asphalt and concrete, and a base material for highways, rural roads and buildings. Applications outside of construction include agricultural lime for soil neutralization.

Granite, the second most common type of crushed stone, is used as concrete and asphalt aggregate, a base material for highways, rural roads, and buildings, and for landscaping and decorative stone.

Production of crushed stone has three stages: Primary crushing to break down the stone to a manageable size; secondary and tertiary crushing to render the rocks into sizes specific to their applications; and screening to separate the crushed stone for further processing or for finished products sizes.

Stone Fine Shovel
Fine

Fine crushed stone aggregates consist of particle sizes that are typically less than 3/8-inch (9 mm). Fine aggregates are used in asphalt, concrete, backfill, construction and specialty applications.

Common Uses
• Concrete
• Asphalt
• Backfill and bedding materials
• Skid resistance on ice or snow
• Agricultural-lime (Ag-lime)
• Stabilized earth or reinforced soils

Sizes and Designations
ASTM, AASHTO & DOT products available.
Common designations include, but are not limited to: Concrete Sand, Asphalt Sand, Manufactured Sand (Man Sand), Dry & Washed Screenings

Crushed Stone Coarse
Coarse

Coarse aggregates consist of gravel, crushed stone or recycled concrete with particle sizes of ranging from 3/8-inch to 1.5 inches. Coarse aggregates are used in a wide range of construction applications, notably in concrete and asphalt mixes.

Common Uses
• Concrete aggregate
• Asphalt aggregate
• Drainage stone
• Seal coat chips for roadways
• Stone roads and driveways
• Road base
• Backfill

Sizes and Designations
ASTM, AASHTO & DOT products available.
Common designations include, but are not limited to: #4, #467, #5, #56, #57, #6, #67, #7, #8, #89, #9

Crushed Stone Base Coarse
Base Course

Dense-graded base course refers to aggregates with a range of particle sizes, usually 1-1/2-inch and smaller, that produce a dense layer of stone with a minimum amount of voids. Primarily uses include pavement and construction applications.

Common Uses
• Foundation for asphalt pavement
• Foundation for concrete pads and pavements
• Unpaved roads and shoulders
• Backfill for pipe and underground utilities
• Cement-treated base

Sizes and Designations
Sizes and designations vary by location due to governing agency requirements.
Common designations include, but are not limited to: Base, Subbase, Dense Graded Base,  Crushed Stone Base, Graded Aggregate Base (GAB), Aggregate Base Course (ABC), Macadam Base Course (MBC)

Crushed Stone Ballast
Ballast

Large coarse aggregates that consist of crushed stone (hardstone such as rhyolite, granite and sometimes dolomite) with particle sizes ranging from 1 ½ inches to 4 inches. Typical uses include construction applications and railroad ballast.

Common Uses
• Railroad ballast
• Construction entrances
• Rough site pads

Sizes and Designations
ASTM, AASHTO & AREMA products available.
Common designations include, but are not limited to: #1, #2, #3, #4, #5

Crushed Stone Rip Rap
Rip-Rap

Rip-Rap is large pieces of crushed stone (4 inches or larger) typically used to protect shorelines and slopes from erosion and runoff. Architectural and landscaping applications are also common.

Common Uses
• Erosion control
• Runoff protection
• Slope stability
• Landscaping
• Architectural applications
• Gabion baskets

Sizes and Designations
Sizes and designations vary by location due to governing agency requirements. Contact a sales representative for more information.

Crushed Stone Specialty Products
Specialty Products

Crushed aggregates can fulfill specialized functions outside of construction, such as industrial processes and household and landscaping uses.

Common Uses
• Agricultural lime agent to treat soil (Ag-lime)
• Mineral filler or fine grind, currently available from Hanson at Thornton IL, Nokomis IL, Plum Run OH, Sandusky OH, or Watertown NY.
• Landscaping stones
• Skid resistance on ice or snow
• Chemical stone
• Scrubber stone to treat flue gases
• Filter courses for septic systems

Sizes and Designations
Sizes and designations vary by location due to governing agency requirements. Contact location sales representative for more information.