Aggregates

Aggregates in construction are generally thought of as inert filler within a concrete mix. But looking at these materials closer reveals the major role and influence aggregates play in the properties of both fresh and hardened concrete. Changes in gradation, maximum size, unit weight, and moisture content can all alter the character and performance of your concrete mix. Economy is another reason for a very useful aggregate selection for your building project. You can often avoid expending too many resources by selecting the maximum allowable aggregate size. Using larger coarse aggregates frequently lowers the cost of a concrete mix by reducing cement amount, the most costly ingredient. Less cement (important within reasonable limits for durability) will mean less water if the water-cement (w/c) ratio is kept constant. A lower water content will reduce the potential for shrinkage and for cracking associated with restrained volume change

Ready-mixed concrete, hot mix asphalt, mortar and many construction materials utilize aggregates as a key ingredient. Aggregates not only increase strength, but can also make the mixes more compact, decreasing permeability making them more weatherproof, and modify heat retention values. These characteristics make aggregates an indispensable ingredient in the construction and maintenance of highways, walkways, parking lots, foundation and driveways.

  1. Pearock
  2. Stone #57 – ¾
  3. Stone #67 – ½
  4. Commercial Sand
  5. FDOT Sand
  6. Limerock.

AMDI USA offers a wide variety of aggregates for concrete and construction to suit our customers’ needs:

Sand

AMDI USA sand

Sand occurs naturally and is composed of fine rock material and mineral particles. Its composition is variable depending on the source. It can be used for roads, for aggregate concrete manufacturing, or sanitation.

Gravel

AMDI USA gravel

Gravel deposits are produced through a natural process of weathering and erosion. Is an important commercial product with a number of applications. The resulting aggregate for concrete can be used in roads, manufacturing, or decorative purposes.

Crushed Stone

AMDI USA crushed stone

These products are obtained by mining rock and breaking it down to a preferred size. In the case of manufactured sand, the product is obtained by crushing rock to the selected shape or texture, ensuring product and project specifications are met. Sources of crushed stone can be igneous, sedimentary, or metamorphic.