Are there ASTM standards for fly ash based bricks and pavers?
There are not yet ASTM standards specifically for bricks or pavers comprised of fly ash. However, CalStar products meet the performance requirements of the corresponding clay and concrete brick and paver specifications (ASTM C216 – 07a Standard Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale), C902 – 09 Standard Specification for Pedestrian and Light Traffic Paving Brick, C936/C936M – 09 Standard Specification for Solid Concrete Interlocking Paving Units).