Types of Concrete Aggregate and Common Applications

Types of Concrete Aggregate and Common Applications

Baltimore Concrete Aggregate Delivery & Supplier

In the production of concrete, aggregates are one of the most essential ingredients in its formation. These small granular particles can be made up of crushed stone, gravel, or sand, and make up 60-75% of the final concrete product’s total volume. Well-mixed concrete is made up of cement and water, along with aggregates that are clean, hard, and strong, with no chemicals absorbed into them or clay coatings which could cause concrete deterioration.

The final concrete product is highly influenced by the properties of the aggregates, the overall freshly mixed concrete, and proportions of the mixture. Selecting the aggregates, which come in four categories, is a crucial process. Variation in the properties of aggregate is common and expected, but they are typically characterized by these features:

  • Grade
  • Particle Shape
  • Surface Texture
  • Durability
  • Resistance to Abrasion and Skid
  • Voids and Unit Weights
  • Surface Moisture and Absorption

Grading Aggregates

The first on the list, grading, references the distribution of the particle size, and is used to limit maximum size of aggregate particles. These characteristics all individually affect how much aggregate, water, and cement are used. Each property affects the concretes durability and workability once mixed and set.

A proper choice of the ratio of water to cement can allow for a wider range in grade choices without affecting strength; however, choosing a gap-graded aggregate will allow some particle sizes to be omitted, as the gap-graded aggregate is typically used to create textures that are more uniform in concrete with exposed aggregate. With all concrete mixing, the proportions must be highly controlled to avoid segregation and splitting later on.

ReAgg specializes in crushing aggregates onsite for use or concrete disposal as well as the delivery of aggregates. Crushed aggregate is broken down from recycled concrete, large gravel, or quarry rock. Aggregate can be obtained for projects such as soil-cement, new concrete, and granular sub-bases.

ReAgg has the experience in the applications listed below and the delivery of aggregates in Baltimore, and can help you find the best combination for your own project.

Fine Aggregate

3/16″ or smaller, but can come in other DOT or special sizes

Rock Powder, Rock Dust, Concrete Sand, Asphalt Sand, and Mortar Sand


  • Snow and Ice Control
  • Concrete
  • Asphalt
  • Asphalt Surface Treatments Such as Micro-Surfacing
  • Agricultural Lime
  • Refractors
  • MSE Wall or Select Backfill

Base Aggregate

1-1/2″ or smaller, but can also be found in other DOT sizes

Base, Base Course, Aggregate Base Course, Graded Base Course


  • Driveways
  • Cement-Treated Bases
  • Equipment Support Pads
  • Engineered Backfill
  • Stabilization for Road Shoulders or Unpaved Road

Course Aggregate

3/16″ to 4″, with other special and Dot Sizes typically available

Designations typically numbered using AASHTO and ASTM, such as Numbers 1, 2, 4, 5, 6, 7, 8, 56, 57, 89, 357, and 467.

Applications :

  • Concrete
  • Driveways
  • Asphalt
  • Containment Cells for Water Runoff
  • Sediment Check Dams
  • MSE Wall Backfill
  • Construction Entrances
  • Ram Aggregate Piers

Rip Rap Aggregate

4″ or more (varies by state)

Varies, Contact ReAgg for additional information


  • Architectural Applications
  • Landscaping
  • Jetties
  • Erosion and Channel Flow Control
  • Slope Stability
  • Scour Protection
  • Gabion Baskets
  • Shoreline Protection

Contact ReAgg for a quote on aggregates delivery or onsite mobile crushing services. We also offer the rental of material hauling dump trucks and equipment. We service and deliver Baltimore, Fairfax, Alexandria, Rockville, Washington DC metropolitan areas. Call us at (301) 336-6700 or toll-free at (888) 554-1503. You can also request a quote here.

ReAgg is a leading construction aggregate supplier committed to providing quality products and services throughout Suburban Maryland, Northern Virginia, Washington, DC and the Baltimore Metropolitan areas. In addition to a full line of aggregate products, ReAgg offers top-rated fill materials, sand, gravel, topsoil, millings, cold patch, mulch, salt, lime, erosion control and hardscape stone. All are available for pickup or delivery. Our modern fleet of trucks and state-of-the-art, computerized dispatch system ensures prompt delivery for critical project schedules. We offer on-site crushing and screening of materials with equipment ranging from portable crushers, conveyors and screening plants to backhoes, loaders and a full complement of breaking equipment. We also have a large fleet of dump trucks, flat beds, lowboys, water trucks and flusher trucks, all available for manned rental or contract hauling. We have disposal sites for broken concrete, demolition materials, dirt, rock, asphalt, contaminated and unsuitable soils. For a quote on your residential, construction, commercial, government, or industrial project, call us today at (301) 336-6700 or toll free at 1-(888)-554-1503.