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Aggregate

“Aggregate” is a collective term for the mineral materials such as sand, gravel and crushed stone that are used with a binding medium (such as water, bitumen, portland cement, lime, etc.) to form compound materials (such as asphalt concrete and portland cement concrete). By volume, aggregate generally accounts for 92 to 96 percent of HMA … Read more »

 

Featured Articles

Photo Jan 07, 10 50 10 AM

Constructing infrastructure is a costly and time consuming affair. Owners and builders go through great efforts testing, inspecting, and documenting many important activities to ensure these cost and time expenditures do not overrun. Traditionally, these tests, inspections, and other documents have been recorded on paper and retained in paper form for years, until they could … Read more »

Backhoe used to place and initially grade spots

In designing and building pavements, we sometimes casually assume that making a pavement thicker also makes it stronger, but even to the extent this is true, how thick is thick enough? One of the key questions in the structural design of an asphalt pavement is how thick each layer of the structure should be. During … Read more »