Coarse Aggregate Angularity
Overview The coarse aggregate angularity (CAA) test is a method of determining the angularity of coarse aggregate (Figure 1). Coarse […]
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Fine Aggregate Angularity
Overview The fine aggregate angularity (FAA) test (Figure 1) is an indirect method of assessing the angularity of fine aggregate. […]
Polished Aggregate
Description Areas of pavement (either PCC or HMA) where the portion of aggregate extending above the asphalt binder (in the […]
Minimize Aggregate Segregation and Increase Pavement Quality
When it comes to the paving process, we’re all trying to produce the highest quality pavements possible. During the process […]
Aggregate Segregation
“Segregation” is a term often used in the HMA industry to describe a number of different phenomena. It’s most general […]
Aggregate
Aggregate” is a collective term for the mineral materials such as sand, gravel and crushed stone that are used with […]
Alkali-Aggregate Reaction
Alkali-aggregate reaction is the expansive reaction that takes place in PCC between alkali (contained in the cement paste) and elements […]
Permeability vs. Aggregate Size and Lift Thickness
It is generally believed that HMA densities between 3 and 8 percent air voids will result in a pavement that […]
Fine Aggregate Specific Gravity
Overview The fine aggregate specific gravity test (Figure 1) is used to calculate the specific gravity of a fine aggregate […]
Reclaimed Concrete Material Used as Coarse Aggregate
In general, adequate PCC pavement can and has been constructed using RCM as a coarse aggregate. Purpose Coarse aggregate in […]