Calstar Fly-Ash Brick and Paver

Credit: CalStar Products, Inc.

What makes this product green?

  • Reduces stormwater pollution


CalStar bricks and pavers are made from 40% fly ashFine particulates consisting primarily of silica, alumina, and iron that are collected from flue gases during coal combustion. Flyash is employed as a substitute for some of the portland cement used in the making of concrete, producing a denser, stronger, and slower-setting material while eliminating a portion of the energy-intensive cement required. More info, aggregates, water and proprietary ingredients and do not require firing like pressed clay bricks, resulting in up to 81% less embodied energyEnergy that goes into making a product; includes energy required for growth, extraction, and transportation of the raw material as well as manufacture, packaging, and transportation of the finished product. Embodied energy is often used to measure ecological cost. and 84% lower CO2 emissions, according to the company. Calstar products do not contain portland cement, another major source of CO2. These modular and utility bricks and 4" x 8" pavers are available in eight colors. Note that while leach test data from the company show little leaching of heavy metals from these products, the end-of-life disposal impacts of fly ash-containing products is a complex issue with some unknowns.


Manufacturer Information

CalStar Products, Inc.
6851 Mowry Ave.
Newark, CA 94560
Phone: 510-793-9500

Listed in: Brick Masonry, Brick Pavers


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