There are a variety of aggregate sizes available on the market, and how they work together affects choosing the right filler material and developing quality concrete. Why is it so important to find the right sizes, though, and how do they contribute to specific construction applications? Follow the guide below for a closer look at the way size, shape, and texture play into the final results.

How Aggregate Size Affects the Final Product

What Applications Are Suited for Different Sizes?

One of the most common applications involves incorporating aggregate into a concrete mix, which will help with the mix's resistance to abrasion, stiffness, and overall stability. Most structural concrete contains aggregate size that typically tops off at a maximum of 40 millimeters. When dealing with mass concrete projects—which range from dams to mat foundations and any other structures with a depth or width of one meter or more—the max size increases to 150 millimeters. Combining these larger coarse pieces with small, fine aggregate allows for the best packing.

Beyond concrete, sand and gravel have myriad uses in both residential and commercial settings. 3/4-inch crushed rock, for instance, is the ideal size for landscaping, driveways, and walkways. The same applies to 3/8-inch washed rock, also known as pea gravel, which is great for concrete, landscaping, and creating a base in dog kennels and parks. On the larger end of the spectrum, 1 to 4-inch drain rock is popular both in landscaping and various aspects of the septic system.

How Do Shape & Texture Apply?

Shape may not seem like a big deal at a glance, but it can affect the bondage of the concrete. Regarding packing, rounded aggregate will require less water, while angular stones are easier to pack together. The basic nature of their shape allows them to interlock naturally, so an appropriately varied mix may provide the ideal composite. Additionally, rougher textures bond to paste more readily, but they demand more water in the mix. For the best results, you'll want to avoid flaky materials, which could contribute to weak, poorly compacted concrete.

Whenever you need aggregate of all shapes and sizes, it's always worth doing your research to make sure you choose a reputable concrete contractor. Best Transit Mix of Soldotna, AK, is the go-to source for commercial and residential clients on the search for high-quality concrete supplies. With over 35 years of experience under their belt, this locally owned and operated company will be on time and stay within your budget no matter how big your project may be. Visit their website for more on their aggregate supply services, and call them at (907) 262-6273 to schedule a free estimate today.