Calculate coarse aggregate (gravel/crushed stone) and fine aggregate (sand) proportioning for concrete slabs, sub-bases, and bedding layers.
Structural concrete aggregate proportioning comparing sharp sand with crushed gravel stones.
Structural concrete aggregate proportioning comparing sharp sand with crushed gravel stones.
Mathematical formulas and engineering constants powering this calculator.
Standard structural concrete ratio where gravel is double the sand volume.
Calculates dry batch weight of sand and gravel for batch plants.
Dry bulk material expansion multiplier for concrete batching.
In concrete mixing, sand (fine aggregate) fills the voids between the larger gravel (coarse aggregate) stones, while cement paste glues the matrix together. The standard rule of thumb for dry volume expansion is multiplying the wet slab volume by 1.54.