Aggregate characteristics vary more than any other ingredient in a mix design. and are a major influence on product quality and manufacturing efficiency. While area availability is key to delivered pricing, the lowest cost material may cost you more “up-stream”. Interestingly, the inverse can be true whereas the best quality blend of materials (on paper) might not be ideal for the application.

Problems with mold fill, compaction, green strength/cohesion, and chipping can be very expensive – especially when using cement as the “band-aid”!

Some key considerations include:

• Individual and composite gradation
• Particle shape and surface texture
• Pan fines content

If considering an aggregate change, or just wanting another opinion on what’s in use – give us a call and we’ll gladly assist.